sqlite4HaltConstraint(
        pParse, OE_Abort, "indexed columns are not unique", P4_STATIC
    );
  }else{
    addr2 = sqlite4VdbeCurrentAddr(v);
  }
  sqlite4VdbeAddOp2(v, OP_SorterData, iSorter, regRecord);
  sqlite4VdbeAddOp2(v, OP_IdxInsert, iIdx, regRecord);  ***** busted
  sqlite4VdbeChangeP5(v, OPFLAG_USESEEKRESULT | OPFLAG_APPENDBIAS);
#else
  regIdxKey = sqlite4GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1, iIdx);
  addr2 = addr1 + 1;
  if( pIndex->onError!=OE_None ){
    const int regRowid = regIdxKey + pIndex->nColumn;
    const int j2 = sqlite4VdbeCurrentAddr(v) + 2;

    sqlite4HaltConstraint(
        pParse, OE_Abort, "indexed columns are not unique", P4_STATIC
    );
  }else{
    addr2 = sqlite4VdbeCurrentAddr(v);
  }
  sqlite4VdbeAddOp2(v, OP_SorterData, iSorter, regRecord);
  sqlite4VdbeAddOp2(v, OP_IdxInsert, iIdx, regRecord);  
  sqlite4VdbeChangeP5(v, OPFLAG_USESEEKRESULT | OPFLAG_APPENDBIAS);
#else
  regIdxKey = sqlite4GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1, iIdx);
  addr2 = addr1 + 1;
  if( pIndex->onError!=OE_None ){
    const int regRowid = regIdxKey + pIndex->nColumn;
    const int j2 = sqlite4VdbeCurrentAddr(v) + 2;

**   Register (x+3):      3.1  (type real)
*/

/*
** A foreign key constraint requires that the key columns in the parent
** table are collectively subject to a UNIQUE or PRIMARY KEY constraint.
** Given that pParent is the parent table for foreign key constraint pFKey, 
** search the schema a unique index on the parent key columns. 
**
** If successful, zero is returned. If the parent key is an INTEGER PRIMARY 
** KEY column, then output variable *ppIdx is set to NULL. Otherwise, *ppIdx 
** is set to point to the unique index. 
** 
** If the parent key consists of a single column (the foreign key constraint
** is not a composite foreign key), output variable *paiCol is set to NULL.
** Otherwise, it is set to point to an allocated array of size N, where
** N is the number of columns in the parent key. The first element of the
** array is the index of the child table column that is mapped by the FK
** constraint to the parent table column stored in the left-most column
................................................................................
static int locateFkeyIndex(
  Parse *pParse,                  /* Parse context to store any error in */
  Table *pParent,                 /* Parent table of FK constraint pFKey */
  FKey *pFKey,                    /* Foreign key to find index for */
  Index **ppIdx,                  /* OUT: Unique index on parent table */
  int **paiCol                    /* OUT: Map of index columns in pFKey */
){
  Index *pIdx = 0;                    /* Value to return via *ppIdx */
  int *aiCol = 0;                     /* Value to return via *paiCol */
  int nCol = pFKey->nCol;             /* Number of columns in parent key */
  char *zKey = pFKey->aCol[0].zCol;   /* Name of left-most parent key column */

  /* The caller is responsible for zeroing output parameters. */
  assert( ppIdx && *ppIdx==0 );
  assert( !paiCol || *paiCol==0 );
  assert( pParse );

  /* If this is a non-composite (single column) foreign key, check if it 
  ** maps to the INTEGER PRIMARY KEY of table pParent. If so, leave *ppIdx 
  ** and *paiCol set to zero and return early. 
  **

  ** Otherwise, for a composite foreign key (more than one column), allocate
  ** space for the aiCol array (returned via output parameter *paiCol).
  ** Non-composite foreign keys do not require the aiCol array.
  */
  if( nCol==1 ){
    /* The FK maps to the IPK if any of the following are true:
    **
    **   1) There is an INTEGER PRIMARY KEY column and the FK is implicitly 
    **      mapped to the primary key of table pParent, or
    **   2) The FK is explicitly mapped to a column declared as INTEGER
    **      PRIMARY KEY.
    */
    if( pParent->iPKey>=0 ){
      if( !zKey ) return 0;
      if( !sqlite4StrICmp(pParent->aCol[pParent->iPKey].zName, zKey) ) return 0;
    }
  }else if( paiCol ){
    assert( nCol>1 );
    aiCol = (int *)sqlite4DbMallocRaw(pParse->db, nCol*sizeof(int));
    if( !aiCol ) return 1;
    *paiCol = aiCol;
  }

  for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){
    if( pIdx->nColumn==nCol && pIdx->onError!=OE_None ){ 
      /* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number
      ** of columns. If each indexed column corresponds to a foreign key
      ** column of pFKey, then this index is a winner.  */

      if( zKey==0 ){
        /* If zKey is NULL, then this foreign key is implicitly mapped to 
        ** the PRIMARY KEY of table pParent. The PRIMARY KEY index may be 
        ** identified by the test (Index.autoIndex==2).  */
        if( pIdx->eIndexType==SQLITE_INDEX_PRIMARYKEY ){
          if( aiCol ){
            int i;
            for(i=0; i<nCol; i++) aiCol[i] = pFKey->aCol[i].iFrom;
          }
          break;
        }
      }else{
        /* If zKey is non-NULL, then this foreign key was declared to
        ** map to an explicit list of columns in table pParent. Check if this
        ** index matches those columns. Also, check that the index uses
        ** the default collation sequences for each column. */
        int i, j;
        for(i=0; i<nCol; i++){
          int iCol = pIdx->aiColumn[i];     /* Index of column in parent tbl */
          char *zDfltColl;                  /* Def. collation for column */
          char *zIdxCol;                    /* Name of indexed column */

          /* If the index uses a collation sequence that is different from
................................................................................
static void fkLookupParent(
  Parse *pParse,        /* Parse context */
  int iDb,              /* Index of database housing pTab */
  Table *pTab,          /* Parent table of FK pFKey */
  Index *pIdx,          /* Unique index on parent key columns in pTab */
  FKey *pFKey,          /* Foreign key constraint */
  int *aiCol,           /* Map from parent key columns to child table columns */
  int regData,          /* Address of array containing child table row */
  int nIncr,            /* Increment constraint counter by this */
  int isIgnore          /* If true, pretend pTab contains all NULL values */
){
  int i;                                    /* Iterator variable */
  Vdbe *v = sqlite4GetVdbe(pParse);         /* Vdbe to add code to */
  int iCur = pParse->nTab - 1;              /* Cursor number to use */
  int iOk = sqlite4VdbeMakeLabel(v);        /* jump here if parent key found */

  /* If nIncr is less than zero, then check at runtime if there are any
  ** outstanding constraints to resolve. If there are not, there is no need
  ** to check if deleting this row resolves any outstanding violations.
  **
  ** Check if any of the key columns in the child table row are NULL. If 
  ** any are, then the constraint is considered satisfied. No need to 
  ** search for a matching row in the parent table.  */
  if( nIncr<0 ){
    sqlite4VdbeAddOp2(v, OP_FkIfZero, pFKey->isDeferred, iOk);
  }




  for(i=0; i<pFKey->nCol; i++){
    int iReg = aiCol[i] + regData + 1;
    sqlite4VdbeAddOp2(v, OP_IsNull, iReg, iOk);
  }

  if( isIgnore==0 ){
    if( pIdx==0 ){
      /* If pIdx is NULL, then the parent key is the INTEGER PRIMARY KEY
      ** column of the parent table (table pTab).  */
      int iMustBeInt;               /* Address of MustBeInt instruction */
      int regTemp = sqlite4GetTempReg(pParse);
  
      /* Invoke MustBeInt to coerce the child key value to an integer (i.e. 
      ** apply the affinity of the parent key). If this fails, then there
      ** is no matching parent key. Before using MustBeInt, make a copy of
      ** the value. Otherwise, the value inserted into the child key column
      ** will have INTEGER affinity applied to it, which may not be correct.  */
      sqlite4VdbeAddOp2(v, OP_SCopy, aiCol[0]+1+regData, regTemp);
      iMustBeInt = sqlite4VdbeAddOp2(v, OP_MustBeInt, regTemp, 0);
  
      /* If the parent table is the same as the child table, and we are about
      ** to increment the constraint-counter (i.e. this is an INSERT operation),
      ** then check if the row being inserted matches itself. If so, do not
      ** increment the constraint-counter.  */
      if( pTab==pFKey->pFrom && nIncr==1 ){
        sqlite4VdbeAddOp3(v, OP_Eq, regData, iOk, regTemp);
      }
  
      sqlite4OpenTable(pParse, iCur, iDb, pTab, OP_OpenRead);
      sqlite4VdbeAddOp3(v, OP_NotExists, iCur, 0, regTemp);
      sqlite4VdbeAddOp2(v, OP_Goto, 0, iOk);
      sqlite4VdbeJumpHere(v, sqlite4VdbeCurrentAddr(v)-2);
      sqlite4VdbeJumpHere(v, iMustBeInt);
      sqlite4ReleaseTempReg(pParse, regTemp);
    }else{
      int nCol = pFKey->nCol;
      int regTemp = sqlite4GetTempRange(pParse, nCol);
      int regRec = sqlite4GetTempReg(pParse);
      KeyInfo *pKey = sqlite4IndexKeyinfo(pParse, pIdx);
  
      sqlite4VdbeAddOp3(v, OP_OpenRead, iCur, pIdx->tnum, iDb);
      sqlite4VdbeChangeP4(v, -1, (char*)pKey, P4_KEYINFO_HANDOFF);



      for(i=0; i<nCol; i++){
        sqlite4VdbeAddOp2(v, OP_Copy, aiCol[i]+1+regData, regTemp+i);
      }
  
      /* If the parent table is the same as the child table, and we are about
      ** to increment the constraint-counter (i.e. this is an INSERT operation),
      ** then check if the row being inserted matches itself. If so, do not
      ** increment the constraint-counter. 
      **
      ** If any of the parent-key values are NULL, then the row cannot match 
      ** itself. So set JUMPIFNULL to make sure we do the OP_Found if any
      ** of the parent-key values are NULL (at this point it is known that
      ** none of the child key values are).
      */
      if( pTab==pFKey->pFrom && nIncr==1 ){
        int iJump = sqlite4VdbeCurrentAddr(v) + nCol + 1;
        for(i=0; i<nCol; i++){
          int iChild = aiCol[i]+1+regData;
          int iParent = pIdx->aiColumn[i]+1+regData;
          assert( aiCol[i]!=pTab->iPKey );
          if( pIdx->aiColumn[i]==pTab->iPKey ){
            /* The parent key is a composite key that includes the IPK column */
            iParent = regData;
          }
          sqlite4VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent);
          sqlite4VdbeChangeP5(v, SQLITE_JUMPIFNULL);
        }
        sqlite4VdbeAddOp2(v, OP_Goto, 0, iOk);
      }
  






      sqlite4VdbeAddOp3(v, OP_MakeRecord, regTemp, nCol, regRec);
      sqlite4VdbeChangeP4(v, -1, sqlite4IndexAffinityStr(v,pIdx), P4_TRANSIENT);
      sqlite4VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0);
  
      sqlite4ReleaseTempReg(pParse, regRec);
      sqlite4ReleaseTempRange(pParse, regTemp, nCol);
    }
  }

  if( !pFKey->isDeferred && !pParse->pToplevel && !pParse->isMultiWrite ){
    /* Special case: If this is an INSERT statement that will insert exactly
    ** one row into the table, raise a constraint immediately instead of
    ** incrementing a counter. This is necessary as the VM code is being
    ** generated for will not open a statement transaction.  */
................................................................................
    if( pLeft ){
      /* Set the collation sequence and affinity of the LHS of each TK_EQ
      ** expression to the parent key column defaults.  */
      if( pIdx ){
        Column *pCol;
        iCol = pIdx->aiColumn[i];
        pCol = &pTab->aCol[iCol];
        if( pTab->iPKey==iCol ) iCol = -1;
        pLeft->iTable = regData+iCol+1;
        pLeft->affinity = pCol->affinity;
        pLeft->pColl = sqlite4LocateCollSeq(pParse, pCol->zColl);
      }else{
        pLeft->iTable = regData;
        pLeft->affinity = SQLITE_AFF_INTEGER;
      }
................................................................................

    if( aiFree ){
      aiCol = aiFree;
    }else{
      iCol = pFKey->aCol[0].iFrom;
      aiCol = &iCol;
    }
    for(i=0; i<pFKey->nCol; i++){
      if( aiCol[i]==pTab->iPKey ){
        aiCol[i] = -1;
      }
#ifndef SQLITE_OMIT_AUTHORIZATION

      /* Request permission to read the parent key columns. If the 
      ** authorization callback returns SQLITE_IGNORE, behave as if any
      ** values read from the parent table are NULL. */
      if( db->xAuth ){
        int rcauth;
        char *zCol = pTo->aCol[pIdx ? pIdx->aiColumn[i] : pTo->iPKey].zName;
        rcauth = sqlite4AuthReadCol(pParse, pTo->zName, zCol, iDb);
        isIgnore = (rcauth==SQLITE_IGNORE);
      }
#endif
    }


    /* Take a shared-cache advisory read-lock on the parent table. Allocate 
    ** a cursor to use to search the unique index on the parent key columns 
    ** in the parent table.  */
    sqlite4TableLock(pParse, iDb, pTo->tnum, 0, pTo->zName);
    pParse->nTab++;

................................................................................
      FKey *p;

      /* Check if any child key columns are being modified. */
      for(p=pTab->pFKey; p; p=p->pNextFrom){
        for(i=0; i<p->nCol; i++){
          int iChildKey = p->aCol[i].iFrom;
          if( aChange[iChildKey]>=0 ) return 1;
          if( iChildKey==pTab->iPKey && chngRowid ) return 1;
        }
      }

      /* Check if any parent key columns are being modified. */
      for(p=sqlite4FkReferences(pTab); p; p=p->pNextTo){
        for(i=0; i<p->nCol; i++){
          char *zKey = p->aCol[i].zCol;
          int iKey;
          for(iKey=0; iKey<pTab->nCol; iKey++){
            Column *pCol = &pTab->aCol[iKey];
            if( (zKey ? !sqlite4StrICmp(pCol->zName, zKey) : pCol->isPrimKey) ){
              if( aChange[iKey]>=0 ) return 1;
              if( iKey==pTab->iPKey && chngRowid ) return 1;
            }
          }
        }
      }
    }
  }
  return 0;

**   Register (x+3):      3.1  (type real)
*/

/*
** A foreign key constraint requires that the key columns in the parent
** table are collectively subject to a UNIQUE or PRIMARY KEY constraint.
** Given that pParent is the parent table for foreign key constraint pFKey, 
** search the schema for a unique index on the parent key columns. 
**
** If successful, zero is returned and *ppIdx is set to point to the 

** unique index.
** 
** If the parent key consists of a single column (the foreign key constraint
** is not a composite foreign key), output variable *paiCol is set to NULL.
** Otherwise, it is set to point to an allocated array of size N, where
** N is the number of columns in the parent key. The first element of the
** array is the index of the child table column that is mapped by the FK
** constraint to the parent table column stored in the left-most column
................................................................................
static int locateFkeyIndex(
  Parse *pParse,                  /* Parse context to store any error in */
  Table *pParent,                 /* Parent table of FK constraint pFKey */
  FKey *pFKey,                    /* Foreign key to find index for */
  Index **ppIdx,                  /* OUT: Unique index on parent table */
  int **paiCol                    /* OUT: Map of index columns in pFKey */
){
  Index *pIdx = 0;                /* Value to return via *ppIdx */
  int *aiCol = 0;                 /* Value to return via *paiCol */
  int nCol = pFKey->nCol;         /* Number of columns in parent key */
  int bImplicit;                  /* True if no explicit parent columns */

  /* The caller is responsible for zeroing output parameters. */
  assert( ppIdx && *ppIdx==0 );
  assert( !paiCol || *paiCol==0 );
  assert( pParse );

  bImplicit = (pFKey->aCol[0].zCol==0);




  /* If this is a composite foreign key (more than one column), allocate
  ** space for the aiCol array (returned via output parameter *paiCol).
  ** Non-composite foreign keys do not require the aiCol array.  */













  if( paiCol && nCol>1 ){
    assert( nCol>1 );
    aiCol = (int *)sqlite4DbMallocRaw(pParse->db, nCol*sizeof(int));
    if( !aiCol ) return 1;
    *paiCol = aiCol;
  }

  for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){
    if( pIdx->nColumn==nCol && pIdx->onError!=OE_None ){ 
      /* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number
      ** of columns. If each indexed column corresponds to a foreign key
      ** column of pFKey, then this index is a winner.  */

      if( bImplicit ){



        if( pIdx->eIndexType==SQLITE_INDEX_PRIMARYKEY ){
          if( aiCol ){
            int i;
            for(i=0; i<nCol; i++) aiCol[i] = pFKey->aCol[i].iFrom;
          }
          break;
        }
      }else{
        /* If this foreign key was declared to map to an explicit list of 
        ** columns in table pParent. Check if this index matches those 
        ** columns. Also, check that the index uses the default collation 
        ** sequences for each column. */
        int i, j;
        for(i=0; i<nCol; i++){
          int iCol = pIdx->aiColumn[i];     /* Index of column in parent tbl */
          char *zDfltColl;                  /* Def. collation for column */
          char *zIdxCol;                    /* Name of indexed column */

          /* If the index uses a collation sequence that is different from
................................................................................
static void fkLookupParent(
  Parse *pParse,        /* Parse context */
  int iDb,              /* Index of database housing pTab */
  Table *pTab,          /* Parent table of FK pFKey */
  Index *pIdx,          /* Unique index on parent key columns in pTab */
  FKey *pFKey,          /* Foreign key constraint */
  int *aiCol,           /* Map from parent key columns to child table columns */
  int regContent,       /* Address of array containing child table row */
  int nIncr,            /* Increment constraint counter by this */
  int isIgnore          /* If true, pretend pTab contains all NULL values */
){
  int i;                                    /* Iterator variable */
  Vdbe *v = sqlite4GetVdbe(pParse);         /* Vdbe to add code to */
  int iCur = pParse->nTab - 1;              /* Cursor number to use */
  int iOk = sqlite4VdbeMakeLabel(v);        /* jump here if parent key found */

  assert( pIdx );

  /* If nIncr is less than zero (this is a DELETE), then check at runtime if
  ** there are any outstanding constraints to resolve. If there are not, 
  ** there is no need to check if deleting this row resolves any outstanding 
  ** violations.  */

  if( nIncr<0 ){
    sqlite4VdbeAddOp2(v, OP_FkIfZero, pFKey->isDeferred, iOk);
  }

  /* Check if any of the key columns in the child table row are NULL. If 
  ** any are, then the constraint is considered satisfied. No need to 
  ** search for a matching row in the parent table.  */
  for(i=0; i<pFKey->nCol; i++){
    int iReg = aiCol[i] + regContent;
    sqlite4VdbeAddOp2(v, OP_IsNull, iReg, iOk);
  }

  if( isIgnore==0 ){





























    int nCol = pFKey->nCol;
    int regTemp = sqlite4GetTempRange(pParse, nCol);
    int regRec = sqlite4GetTempReg(pParse);




    sqlite4OpenIndex(pParse, iCur, iDb, pIdx, OP_OpenRead);

    /* Assemble the child key values in a contiguous array of registers */
    for(i=0; i<nCol; i++){
      sqlite4VdbeAddOp2(v, OP_Copy, aiCol[i]+regContent, regTemp+i);
    }

    /* If the parent table is the same as the child table, and we are about
    ** to increment the constraint-counter (i.e. this is an INSERT operation),
    ** then check if the row being inserted matches itself. If so, do not
    ** increment the constraint-counter. 
    **
    ** If any of the parent-key values are NULL, then the row cannot match 
    ** itself. So set JUMPIFNULL to make sure we do the OP_Found if any
    ** of the parent-key values are NULL (at this point it is known that
    ** none of the child key values are).  */

    if( pTab==pFKey->pFrom && nIncr==1 ){
      int iJump = sqlite4VdbeCurrentAddr(v) + nCol + 1;
      for(i=0; i<nCol; i++){
        int iChild = aiCol[i]+regContent;
        int iParent = pIdx->aiColumn[i]+regContent;





        sqlite4VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent);
        sqlite4VdbeChangeP5(v, SQLITE_JUMPIFNULL);
      }
      sqlite4VdbeAddOp2(v, OP_Goto, 0, iOk);
    }

    /* FIXME: Affinities... */
    sqlite4VdbeAddOp3(v, OP_MakeIdxKey, iCur, regTemp, regRec);
    /* sqlite4VdbeChangeP5(v, 1); */

    sqlite4VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0);

    sqlite4VdbeAddOp3(v, OP_MakeRecord, regTemp, nCol, regRec);
    sqlite4VdbeChangeP4(v, -1, sqlite4IndexAffinityStr(v,pIdx), P4_TRANSIENT);
    sqlite4VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0);

    sqlite4ReleaseTempReg(pParse, regRec);
    sqlite4ReleaseTempRange(pParse, regTemp, nCol);

  }

  if( !pFKey->isDeferred && !pParse->pToplevel && !pParse->isMultiWrite ){
    /* Special case: If this is an INSERT statement that will insert exactly
    ** one row into the table, raise a constraint immediately instead of
    ** incrementing a counter. This is necessary as the VM code is being
    ** generated for will not open a statement transaction.  */
................................................................................
    if( pLeft ){
      /* Set the collation sequence and affinity of the LHS of each TK_EQ
      ** expression to the parent key column defaults.  */
      if( pIdx ){
        Column *pCol;
        iCol = pIdx->aiColumn[i];
        pCol = &pTab->aCol[iCol];

        pLeft->iTable = regData+iCol+1;
        pLeft->affinity = pCol->affinity;
        pLeft->pColl = sqlite4LocateCollSeq(pParse, pCol->zColl);
      }else{
        pLeft->iTable = regData;
        pLeft->affinity = SQLITE_AFF_INTEGER;
      }
................................................................................

    if( aiFree ){
      aiCol = aiFree;
    }else{
      iCol = pFKey->aCol[0].iFrom;
      aiCol = &iCol;
    }




#ifndef SQLITE_OMIT_AUTHORIZATION
    for(i=0; i<pFKey->nCol; i++){
      /* Request permission to read the parent key columns. If the 
      ** authorization callback returns SQLITE_IGNORE, behave as if any
      ** values read from the parent table are NULL. */
      if( db->xAuth ){
        int rcauth;
        char *zCol = pTo->aCol[pIdx->aiColumn[i]].zName;
        rcauth = sqlite4AuthReadCol(pParse, pTo->zName, zCol, iDb);
        isIgnore = (rcauth==SQLITE_IGNORE);
      }

    }
#endif

    /* Take a shared-cache advisory read-lock on the parent table. Allocate 
    ** a cursor to use to search the unique index on the parent key columns 
    ** in the parent table.  */
    sqlite4TableLock(pParse, iDb, pTo->tnum, 0, pTo->zName);
    pParse->nTab++;

................................................................................
      FKey *p;

      /* Check if any child key columns are being modified. */
      for(p=pTab->pFKey; p; p=p->pNextFrom){
        for(i=0; i<p->nCol; i++){
          int iChildKey = p->aCol[i].iFrom;
          if( aChange[iChildKey]>=0 ) return 1;

        }
      }

      /* Check if any parent key columns are being modified. */
      for(p=sqlite4FkReferences(pTab); p; p=p->pNextTo){
        for(i=0; i<p->nCol; i++){
          char *zKey = p->aCol[i].zCol;
          int iKey;
          for(iKey=0; iKey<pTab->nCol; iKey++){
            Column *pCol = &pTab->aCol[iKey];
            if( (zKey ? !sqlite4StrICmp(pCol->zName, zKey) : pCol->isPrimKey) ){
              if( aChange[iKey]>=0 ) return 1;

            }
          }
        }
      }
    }
  }
  return 0;

  db = pParse->db;
  memset(&dest, 0, sizeof(dest));
  if( pParse->nErr || db->mallocFailed ){
    goto insert_cleanup;
  }

  /* Locate the table into which we will be inserting new information.
  */
  assert( pTabList->nSrc==1 );
  zTab = pTabList->a[0].zName;
  if( NEVER(zTab==0) ) goto insert_cleanup;
  pTab = sqlite4SrcListLookup(pParse, pTabList);
  if( pTab==0 ){
    goto insert_cleanup;
  }
................................................................................
  assert( iDb<db->nDb );
  pDb = &db->aDb[iDb];
  zDb = pDb->zName;
  if( sqlite4AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0, zDb) ){
    goto insert_cleanup;
  }

  /* Set bImplicitPK to true for an implicit PRIMARY KEY, or false otherwise */



  pPk = sqlite4FindPrimaryKey(pTab, &iPk);
  bImplicitPK = pPk->aiColumn[0]==-1;

  /* Figure out if we have any triggers and if the table being
  ** inserted into is a view
  */
#ifndef SQLITE_OMIT_TRIGGER
  pTrigger = sqlite4TriggersExist(pParse, pTab, TK_INSERT, 0, &tmask);
  isView = pTab->pSelect!=0;
#else
# define pTrigger 0
# define tmask 0
# define isView 0
................................................................................
      sqlite4VdbeAddOp4(v, OP_VUpdate, 1, pTab->nCol+2, regIns, pVTab, P4_VTAB);
      sqlite4VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError);
      sqlite4MayAbort(pParse);
    }else
#endif
    {
      int isReplace;    /* Set to true if constraints may cause a replace */

      sqlite4GenerateConstraintChecks(pParse, pTab, baseCur, 
          regContent, aRegIdx, keyColumn>=0, 0, onError, endOfLoop, &isReplace
      );

      sqlite4FkCheck(pParse, pTab, 0, regIns);

      sqlite4CompleteInsertion(pParse, pTab, baseCur, 
          regContent, aRegIdx, 0, appendFlag, isReplace==0
      );
    }
  }

  /* Update the count of rows that are inserted

  db = pParse->db;
  memset(&dest, 0, sizeof(dest));
  if( pParse->nErr || db->mallocFailed ){
    goto insert_cleanup;
  }

  /* Locate the table into which we will be inserting new information. */

  assert( pTabList->nSrc==1 );
  zTab = pTabList->a[0].zName;
  if( NEVER(zTab==0) ) goto insert_cleanup;
  pTab = sqlite4SrcListLookup(pParse, pTabList);
  if( pTab==0 ){
    goto insert_cleanup;
  }
................................................................................
  assert( iDb<db->nDb );
  pDb = &db->aDb[iDb];
  zDb = pDb->zName;
  if( sqlite4AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0, zDb) ){
    goto insert_cleanup;
  }

  /* Set bImplicitPK to true for an implicit PRIMARY KEY, or false otherwise.
  ** Also set pPk to point to the primary key, and iPk to the cursor offset
  ** of the primary key cursor (i.e. so that the cursor opened on the primary
  ** key index is VDBE cursor (baseCur+iPk).  */
  pPk = sqlite4FindPrimaryKey(pTab, &iPk);
  bImplicitPK = pPk->aiColumn[0]==-1;

  /* Figure out if we have any triggers and if the table being
  ** inserted into is a view. */

#ifndef SQLITE_OMIT_TRIGGER
  pTrigger = sqlite4TriggersExist(pParse, pTab, TK_INSERT, 0, &tmask);
  isView = pTab->pSelect!=0;
#else
# define pTrigger 0
# define tmask 0
# define isView 0
................................................................................
      sqlite4VdbeAddOp4(v, OP_VUpdate, 1, pTab->nCol+2, regIns, pVTab, P4_VTAB);
      sqlite4VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError);
      sqlite4MayAbort(pParse);
    }else
#endif
    {
      int isReplace;    /* Set to true if constraints may cause a replace */

      sqlite4GenerateConstraintChecks(pParse, pTab, baseCur, 
          regContent, aRegIdx, keyColumn>=0, 0, onError, endOfLoop, &isReplace
      );

      sqlite4FkCheck(pParse, pTab, 0, regContent);

      sqlite4CompleteInsertion(pParse, pTab, baseCur, 
          regContent, aRegIdx, 0, appendFlag, isReplace==0
      );
    }
  }

  /* Update the count of rows that are inserted

** After this routine returns successfully, the transaction level will be
** equal to iLevel.
*/
static int kvmemRollback(KVStore *pKVStore, int iLevel){
  KVMem *p = (KVMem*)pKVStore;
  assert( p->iMagicKVMemBase==SQLITE_KVMEMBASE_MAGIC );
  assert( iLevel>=0 );
  assert( iLevel<p->base.iTransLevel );
  while( p->base.iTransLevel>iLevel && p->base.iTransLevel>1 ){
    KVMemChng *pChng, *pNext;
    for(pChng=p->apLog[p->base.iTransLevel-2]; pChng; pChng=pNext){
      KVMemNode *pNode = pChng->pNode;
      if( pChng->pData ){
        kvmemDataUnref(pNode->pData);
        pNode->pData = pChng->pData;
................................................................................
  if( pBest ){
    pCur->pNode = kvmemNodeRef(pBest);
    pCur->pData = kvmemDataRef(pBest->pData);
  }else{
    pCur->pNode = 0;
    pCur->pData = 0;
  }

  return rc;
}

/*
** Delete the entry that the cursor is pointing to.
**
** Though the entry is "deleted", it still continues to exist as a

** After this routine returns successfully, the transaction level will be
** equal to iLevel.
*/
static int kvmemRollback(KVStore *pKVStore, int iLevel){
  KVMem *p = (KVMem*)pKVStore;
  assert( p->iMagicKVMemBase==SQLITE_KVMEMBASE_MAGIC );
  assert( iLevel>=0 );

  while( p->base.iTransLevel>iLevel && p->base.iTransLevel>1 ){
    KVMemChng *pChng, *pNext;
    for(pChng=p->apLog[p->base.iTransLevel-2]; pChng; pChng=pNext){
      KVMemNode *pNode = pChng->pNode;
      if( pChng->pData ){
        kvmemDataUnref(pNode->pData);
        pNode->pData = pChng->pData;
................................................................................
  if( pBest ){
    pCur->pNode = kvmemNodeRef(pBest);
    pCur->pData = kvmemDataRef(pBest->pData);
  }else{
    pCur->pNode = 0;
    pCur->pData = 0;
  }
  assert( rc!=SQLITE_DONE );
  return rc;
}

/*
** Delete the entry that the cursor is pointing to.
**
** Though the entry is "deleted", it still continues to exist as a

/*#define SQLITE_OMIT_BTREECOUNT 1*/
#define SQLITE_OMIT_WAL 1
#define SQLITE_OMIT_VACUUM 1
#define SQLITE_OMIT_AUTOVACUUM 1
#define SQLITE_OMIT_SHARED_CACHE 1
/*#define SQLITE_OMIT_PAGER_PRAGMAS 1*/
#define SQLITE_OMIT_PROGRESS_CALLBACK 1

#define SQLITE_OMIT_MERGE_SORT 1

/*
** These #defines should enable >2GB file support on POSIX if the
** underlying operating system supports it.  If the OS lacks
** large file support, or if the OS is windows, these should be no-ops.
**
** Ticket #2739:  The _LARGEFILE_SOURCE macro must appear before any

/*#define SQLITE_OMIT_BTREECOUNT 1*/
#define SQLITE_OMIT_WAL 1
#define SQLITE_OMIT_VACUUM 1
#define SQLITE_OMIT_AUTOVACUUM 1
#define SQLITE_OMIT_SHARED_CACHE 1
/*#define SQLITE_OMIT_PAGER_PRAGMAS 1*/
#define SQLITE_OMIT_PROGRESS_CALLBACK 1

#define SQLITE_OMIT_MERGE_SORT 1 

/*
** These #defines should enable >2GB file support on POSIX if the
** underlying operating system supports it.  If the OS lacks
** large file support, or if the OS is windows, these should be no-ops.
**
** Ticket #2739:  The _LARGEFILE_SOURCE macro must appear before any

*/
static void storageSetTclErrorName(Tcl_Interp *interp, int rc){
  extern const char *sqlite4TestErrorName(int);
  Tcl_SetObjResult(interp, Tcl_NewStringObj(sqlite4TestErrorName(rc), -1));
}

/*
** TCLCMD:    storage_open URI FLAGS
**
** Return a string that identifies the new storage object.
*/
static int test_storage_open(
  void * clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
  KVStore *pNew = 0;
  int rc;
  int flags;
  sqlite4 db;
  char zRes[50];
  if( objc!=3 ){
    Tcl_WrongNumArgs(interp, 2, objv, "URI FLAGS");
    return TCL_ERROR;
  }
  if( Tcl_GetIntFromObj(interp, objv[2], &flags) ) return TCL_ERROR;


  memset(&db, 0, sizeof(db));
  rc = sqlite4KVStoreOpen(&db, "test", Tcl_GetString(objv[1]), &pNew, flags);
  if( rc ){
    sqlite4KVStoreClose(pNew);
    storageSetTclErrorName(interp, rc);
    return TCL_ERROR;
  }

*/
static void storageSetTclErrorName(Tcl_Interp *interp, int rc){
  extern const char *sqlite4TestErrorName(int);
  Tcl_SetObjResult(interp, Tcl_NewStringObj(sqlite4TestErrorName(rc), -1));
}

/*
** TCLCMD:    storage_open URI ?FLAGS?
**
** Return a string that identifies the new storage object.
*/
static int test_storage_open(
  void * clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
  KVStore *pNew = 0;
  int rc;
  int flags = 0;
  sqlite4 db;
  char zRes[50];
  if( objc!=2 && objc!=3 ){
    Tcl_WrongNumArgs(interp, 1, objv, "URI ?FLAGS?");
    return TCL_ERROR;
  }
  if( objc==3 && Tcl_GetIntFromObj(interp, objv[2], &flags) ){
    return TCL_ERROR;
  }
  memset(&db, 0, sizeof(db));
  rc = sqlite4KVStoreOpen(&db, "test", Tcl_GetString(objv[1]), &pNew, flags);
  if( rc ){
    sqlite4KVStoreClose(pNew);
    storageSetTclErrorName(interp, rc);
    return TCL_ERROR;
  }

      sqlite4VdbeDestroyDecoder(pCodec);
    }
  }else{
    sqlite4VdbeMemSetNull(pDest);
  }
  UPDATE_MAX_BLOBSIZE(pDest);
  REGISTER_TRACE(pOp->p3, pDest);

  break;
}

/* Opcode: Affinity P1 P2 * P4 *
**
** Apply affinities to a range of P2 registers starting with P1.
**
................................................................................
    assert( memIsValid(pIn1) );
    applyAffinity(pIn1, cAff, encoding);
    pIn1++;
  }
  break;
}

/* Opcode: MakeIdxKey P1 P2 P3 P4 *
**
** P1 is an open cursor. P2 is the first register in a contiguous array
** of N registers containing values to encode into a database key. N is
** equal to the number of columns indexed by P1, plus the number of 
** trailing primary key columns (if any).


**
** This instruction encodes the N values into a database key and writes
** the result to register P3.
**
** If P4 is of type P4_INT32, then it is a register number. This instruction
** sets register P4 to an integer value - the number of bytes in the 
** generated index key not including any appended primary key column values.
*/
case OP_MakeIdxKey: {
  VdbeCursor *pC;
  KeyInfo *pKeyInfo;
  Mem *pData0;
  u8 *aRec;                       /* The constructed database key */
  int nRec;                       /* Size of aRec[] in bytes */
  int nShort;                     /* Size of aRec[] without PK values */
  Mem *pShort;                    /* Memory cell to write nShort to */
  
  pC = p->apCsr[pOp->p1];
  pKeyInfo = pC->pKeyInfo;
  pData0 = &aMem[pOp->p2];
  pOut = &aMem[pOp->p3];
  aRec = 0;

  memAboutToChange(p, pOut);


  rc = sqlite4VdbeEncodeKey(
    db, pData0, pKeyInfo->nField, pC->iRoot, pKeyInfo, &aRec, &nRec, &nShort
  );

  if( rc ){
    sqlite4DbFree(db, aRec);
  }else{
    if( pOp->p4type==P4_INT32 ){
      pShort = &aMem[pOp->p4.i];
      memAboutToChange(p, pShort);
      pShort->u.i = nShort;
      MemSetTypeFlag(pShort, MEM_Int);
      REGISTER_TRACE(pOp->p4.i, pShort);
    }
    rc = sqlite4VdbeMemSetStr(pOut, aRec, nRec, 0, SQLITE_DYNAMIC);
    REGISTER_TRACE(pOp->p3, pOut);
    UPDATE_MAX_BLOBSIZE(pOut);
  }

  break;
}
................................................................................
case OP_OpenEphemeral: {
  VdbeCursor *pCx;

  assert( pOp->p1>=0 );
  pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
  if( pCx==0 ) goto no_mem;
  pCx->nullRow = 1;

  rc = sqlite4KVStoreOpen(db, "ephm", ":memory:", &pCx->pTmpKV,
          SQLITE_KVOPEN_TEMPORARY | SQLITE_KVOPEN_NO_TRANSACTIONS
  );
  if( rc==SQLITE_OK ){
    rc = sqlite4KVStoreOpenCursor(pCx->pTmpKV, &pCx->pKVCur);
  }
  if( rc==SQLITE_OK ){
    rc = sqlite4KVStoreBegin(pCx->pTmpKV, 2);
  }
  pCx->pKeyInfo = pOp->p4.pKeyInfo;
  if( pCx->pKeyInfo ) pCx->pKeyInfo->enc = ENC(p->db);

  pCx->isIndex = !pCx->isTable;
  break;
}

/* Opcode: OpenSorter P1 P2 * P4 *
**
** This opcode works like OP_OpenEphemeral except that it opens
................................................................................
  pOut = &aMem[pOp->p2];
  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
#ifndef SQLITE_OMIT_MERGE_SORT
  assert( pC->isSorter );
  rc = sqlite4VdbeSorterRowkey(pC, pOut);
#else
  pOp->opcode = OP_RowKey;
  pc--;
#endif
  break;
}

/* Opcode: RowData P1 P2 * * *
**
................................................................................
    pC->nullRow = 1;
    rc = SQLITE_OK;
  }
  pC->rowidIsValid = 0;
  break;
}

/* Opcode: IdxInsert P1 P2 * * P5
**
** Register P2 holds an SQL index key made using the
** MakeRecord instructions.  This opcode writes that key
** into the index P1.  Data for the entry is nil.
**
** P3 is a flag that provides a hint to the b-tree layer that this
** insert is likely to be an append.
**
** This instruction only works for indices.  The equivalent instruction
** for tables is OP_Insert.
*/
case OP_SorterInsert: {      /* in2 */

  VdbeCursor *pC;

  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
  assert( pC->isSorter==(pOp->opcode==OP_SorterInsert) );
  pIn2 = &aMem[pOp->p2];
  assert( pIn2->flags & MEM_Blob );
  assert( pC->isTable==0 );
  rc = ExpandBlob(pIn2);
  if( rc==SQLITE_OK ){
    rc = sqlite4VdbeSorterWrite(db, pC, pIn2);
  }
  break;

}



/* Opcode: IdxInsert P1 P2 P3 * *
**
** Register P2 holds the data and register P3 holds the key for an
** index record.  Write this record into the index specified by the
** cursor P1.
*/
case OP_IdxInsert: {
  VdbeCursor *pC;
  Mem *pKey;
  Mem *pData;

      sqlite4VdbeDestroyDecoder(pCodec);
    }
  }else{
    sqlite4VdbeMemSetNull(pDest);
  }
  UPDATE_MAX_BLOBSIZE(pDest);
  REGISTER_TRACE(pOp->p3, pDest);
      assert( rc<100 );
  break;
}

/* Opcode: Affinity P1 P2 * P4 *
**
** Apply affinities to a range of P2 registers starting with P1.
**
................................................................................
    assert( memIsValid(pIn1) );
    applyAffinity(pIn1, cAff, encoding);
    pIn1++;
  }
  break;
}

/* Opcode: MakeIdxKey P1 P2 P3 * P5
**
** P1 is an open cursor. P2 is the first register in a contiguous array
** of N registers containing values to encode into a database key. Normally,
** N is equal to the number of columns indexed by P1, plus the number of 
** trailing primary key columns (if any). 
**
** Or, if P5 is non-zero, then any trailing primary key columns are omitted.
**
** This instruction encodes the N values into a database key and writes
** the result to register P3.
**
** No affinity transformations are applied to the input values before 
** they are encoded. 

*/
case OP_MakeIdxKey: {
  VdbeCursor *pC;
  KeyInfo *pKeyInfo;
  Mem *pData0;                    /* First in array of input registers */
  u8 *aRec;                       /* The constructed database key */
  int nRec;                       /* Size of aRec[] in bytes */


  
  pC = p->apCsr[pOp->p1];
  pKeyInfo = pC->pKeyInfo;
  pData0 = &aMem[pOp->p2];
  pOut = &aMem[pOp->p3];
  aRec = 0;

  memAboutToChange(p, pOut);

  assert( pOp->p5==0 );
  rc = sqlite4VdbeEncodeKey(
    db, pData0, pKeyInfo->nField, pC->iRoot, pKeyInfo, &aRec, &nRec, 0
  );

  if( rc ){
    sqlite4DbFree(db, aRec);
  }else{







    rc = sqlite4VdbeMemSetStr(pOut, aRec, nRec, 0, SQLITE_DYNAMIC);
    REGISTER_TRACE(pOp->p3, pOut);
    UPDATE_MAX_BLOBSIZE(pOut);
  }

  break;
}
................................................................................
case OP_OpenEphemeral: {
  VdbeCursor *pCx;

  assert( pOp->p1>=0 );
  pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
  if( pCx==0 ) goto no_mem;
  pCx->nullRow = 1;

  rc = sqlite4KVStoreOpen(db, "ephm", ":memory:", &pCx->pTmpKV,
          SQLITE_KVOPEN_TEMPORARY | SQLITE_KVOPEN_NO_TRANSACTIONS
  );

  if( rc==SQLITE_OK ) rc = sqlite4KVStoreOpenCursor(pCx->pTmpKV, &pCx->pKVCur);


  if( rc==SQLITE_OK ) rc = sqlite4KVStoreBegin(pCx->pTmpKV, 2);

  pCx->pKeyInfo = pOp->p4.pKeyInfo;
  if( pCx->pKeyInfo ) pCx->pKeyInfo->enc = ENC(p->db);

  pCx->isIndex = !pCx->isTable;
  break;
}

/* Opcode: OpenSorter P1 P2 * P4 *
**
** This opcode works like OP_OpenEphemeral except that it opens
................................................................................
  pOut = &aMem[pOp->p2];
  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
#ifndef SQLITE_OMIT_MERGE_SORT
  assert( pC->isSorter );
  rc = sqlite4VdbeSorterRowkey(pC, pOut);
#else
  pOp->opcode = OP_RowData;
  pc--;
#endif
  break;
}

/* Opcode: RowData P1 P2 * * *
**
................................................................................
    pC->nullRow = 1;
    rc = SQLITE_OK;
  }
  pC->rowidIsValid = 0;
  break;
}

/* Opcode: SorterInsert P1 P2 P3










*/
case OP_SorterInsert: {      /* in2 */
#ifndef SQLITE_OMIT_MERGE_SORT
  VdbeCursor *pC;

  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
  assert( pC->isSorter==(pOp->opcode==OP_SorterInsert) );
  pIn2 = &aMem[pOp->p2];
  assert( pIn2->flags & MEM_Blob );
  assert( pC->isTable==0 );
  rc = ExpandBlob(pIn2);
  if( rc==SQLITE_OK ){
    rc = sqlite4VdbeSorterWrite(db, pC, pIn2);
  }
  break;
#endif

  /* If OMIT_MERGE_SORT is defined, fall through to IdxInsert. */
}

/* Opcode: IdxInsert P1 P2 P3 * *
**
** Register P3 holds the key and register P2 holds the data for an
** index entry.  Write this record into the index specified by the
** cursor P1.
*/
case OP_IdxInsert: {
  VdbeCursor *pC;
  Mem *pKey;
  Mem *pData;

    return SQLITE_OK;
  }
  checkActiveVdbeCnt(db);

  if( p->pc<0 ){
    /* No commit or rollback needed if the program never started */
  }else{
    /* Check for immediate foreign key violations. */








    if( p->rc==SQLITE_OK ){









      sqlite4VdbeCheckFk(p, 0);

    }
  
    /* If the auto-commit flag is set and this is the only active writer 
    ** VM, then we do either a commit or rollback of the current transaction. 
    */

    if( !sqlite4VtabInSync(db) 
     && db->autoCommit 
     && db->writeVdbeCnt==(p->readOnly==0) 

    ){
      rc = sqlite4VdbeCheckFk(p, 1);
      if( rc!=SQLITE_OK ){
        rc = SQLITE_CONSTRAINT;
      }else{ 
        /* The auto-commit flag is true, the vdbe program was successful 
        ** or hit an 'OR FAIL' constraint and there are no deferred foreign
        ** key constraints to hold up the transaction. This means a commit 
        ** is required. */
        rc = vdbeCommit(db, p);

      }
      if( rc==SQLITE_BUSY && p->readOnly ){
        /* will return the error */



      }else if( rc!=SQLITE_OK ){
        p->rc = rc;
        sqlite4RollbackAll(db);

      }else{
        db->nDeferredCons = 0;
        sqlite4CommitInternalChanges(db);
      }
    }else{
      /* Not in auto-commit mode.  If the statement failed, rollback
      ** the effects of just this one statement */







      if( p->rc!=SQLITE_OK && p->stmtTransMask!=0 ){
        int i;



        for(i=0; i<db->nDb; i++){
          if( p->stmtTransMask & ((yDbMask)1)<<i ){
            KVStore *pKV = db->aDb[i].pKV;
            rc = sqlite4KVStoreRollback(pKV, pKV->iTransLevel-1);
            if( rc ){
              sqlite4RollbackAll(db);
              break;
            }
          }
        }
      }
    }
  }

  /* We have successfully halted and closed the VM.  Record this fact. */
................................................................................
  if( p->pc>=0 ){
    db->activeVdbeCnt--;
    if( !p->readOnly ){
      db->writeVdbeCnt--;
    }
    assert( db->activeVdbeCnt>=db->writeVdbeCnt );
  }

  p->magic = VDBE_MAGIC_HALT;
  checkActiveVdbeCnt(db);
  if( p->db->mallocFailed ){
    p->rc = SQLITE_NOMEM;
  }

  return (p->rc==SQLITE_BUSY ? SQLITE_BUSY : SQLITE_OK);
}


/*
** Each VDBE holds the result of the most recent sqlite4_step() call
** in p->rc.  This routine sets that result back to SQLITE_OK.

    return SQLITE_OK;
  }
  checkActiveVdbeCnt(db);

  if( p->pc<0 ){
    /* No commit or rollback needed if the program never started */
  }else{
    /* eAction:
    **
    **    0 - Do commit, either statement or transaction.
    **    1 - Do rollback, either statement or transaction.
    **    2 - Do transaction rollback.
    */
    int eAction;

    /* Check if an error has already occurred */
    if( p->rc==SQLITE_CONSTRAINT ){
      if( p->errorAction==OE_Rollback ){
        eAction = 2;
      }else if( p->errorAction==OE_Fail ){
        eAction = 0;
      }
    }else if( p->rc ){
      eAction = 1;
    }

    if( eAction==0 && sqlite4VdbeCheckFk(p, 0) ){
      eAction = 1;
    }




    if( eAction==2 || ( 
          !sqlite4VtabInSync(db)==0 

       && db->writeVdbeCnt==(p->readOnly==0) 
       && db->autoCommit 
    )){
      if( eAction==0 && sqlite4VdbeCheckFk(p, 1) ){








        eAction = 1;
      }



      if( eAction==0 ){
        int rc = vdbeCommit(db, p);
        if( rc!=SQLITE_OK ){
          p->rc = rc;

          eAction = 1;
        }else{
          assert( db->nDeferredCons<=0 );
          sqlite4CommitInternalChanges(db);
        }



      }

      if( eAction ){
        sqlite4RollbackAll(db);
      }

      db->nDeferredCons = 0;
    }else if( p->stmtTransMask ){
      int i;
      int (*xFunc)(KVStore *,int);
      xFunc = (eAction ? sqlite4KVStoreRollback : sqlite4KVStoreCommit);

      for(i=0; i<db->nDb; i++){
        if( p->stmtTransMask & ((yDbMask)1)<<i ){
          KVStore *pKV = db->aDb[i].pKV;
          rc = xFunc(pKV, pKV->iTransLevel-1);
          if( rc ){
            sqlite4RollbackAll(db);
            break;

          }
        }
      }
    }
  }

  /* We have successfully halted and closed the VM.  Record this fact. */
................................................................................
  if( p->pc>=0 ){
    db->activeVdbeCnt--;
    if( !p->readOnly ){
      db->writeVdbeCnt--;
    }
    assert( db->activeVdbeCnt>=db->writeVdbeCnt );
  }

  p->magic = VDBE_MAGIC_HALT;
  checkActiveVdbeCnt(db);
  if( p->db->mallocFailed ){
    p->rc = SQLITE_NOMEM;
  }

  return (p->rc==SQLITE_BUSY ? SQLITE_BUSY : SQLITE_OK);
}


/*
** Each VDBE holds the result of the most recent sqlite4_step() call
** in p->rc.  This routine sets that result back to SQLITE_OK.

  u64 dummy;
  int i;

  p = aKey;
  p += sqlite4GetVarint64(p, pEnd-p, &dummy);

  for(i=0; i<nField; i++){

    switch( *(p++) ){

      case 0x05:                  /* NULL */
      case 0x06:                  /* NaN */
      case 0x07:                  /* -ve infinity */
      case 0x15:                  /* zero */
      case 0x23:                  /* +ve infinity */
        break;

  u64 dummy;
  int i;

  p = aKey;
  p += sqlite4GetVarint64(p, pEnd-p, &dummy);

  for(i=0; i<nField; i++){
    u8 c = *(p++);
    switch( c ){

      case 0x05:                  /* NULL */
      case 0x06:                  /* NaN */
      case 0x07:                  /* -ve infinity */
      case 0x15:                  /* zero */
      case 0x23:                  /* +ve infinity */
        break;

  if {$t0} {set t1 {column a is not unique}}
  if {[info exists TEMP_STORE] && $TEMP_STORE==3} {
    set t3 0
  } else {
    set t3 [expr {$t3+$t4}]
  }
  do_test conflict-6.$i {
    db close
    sqlite4 db test.db 
    if {$conf1!=""} {set conf1 "ON CONFLICT $conf1"}
    execsql {pragma temp_store=file}
    set ::sqlite_opentemp_count 0
    set r0 [catch {execsql [subst {
      DROP TABLE t1;
      CREATE TABLE t1(a,b,c, UNIQUE(a) $conf1);
      INSERT INTO t1 SELECT * FROM t2;

  if {$t0} {set t1 {column a is not unique}}
  if {[info exists TEMP_STORE] && $TEMP_STORE==3} {
    set t3 0
  } else {
    set t3 [expr {$t3+$t4}]
  }
  do_test conflict-6.$i {
    #db close
    #sqlite4 db test.db 
    if {$conf1!=""} {set conf1 "ON CONFLICT $conf1"}
    execsql {pragma temp_store=file}
    set ::sqlite_opentemp_count 0
    set r0 [catch {execsql [subst {
      DROP TABLE t1;
      CREATE TABLE t1(a,b,c, UNIQUE(a) $conf1);
      INSERT INTO t1 SELECT * FROM t2;

#############################################################################
# Start of tests
#

#-------------------------------------------------------------------------
# Define the generic test suites:
#

#   veryquick
#   quick
#   full
#
lappend ::testsuitelist xxx






test_suite "veryquick" -prefix "" -description {
  "Very" quick test suite. Runs in less than 5 minutes on a workstation. 
  This test suite is the same as the "quick" tests, except that some files
  that test malloc and IO errors are omitted.
} -files [
  test_set $allquicktests -exclude *malloc* *ioerr* *fault*

#############################################################################
# Start of tests
#

#-------------------------------------------------------------------------
# Define the generic test suites:
#
#   src4
#   veryquick
#   quick
#   full
#
lappend ::testsuitelist xxx

test_suite "src4" -prefix "" -description {
} -files [
  test_set simple.test fkey1.test
]

test_suite "veryquick" -prefix "" -description {
  "Very" quick test suite. Runs in less than 5 minutes on a workstation. 
  This test suite is the same as the "quick" tests, except that some files
  that test malloc and IO errors are omitted.
} -files [
  test_set $allquicktests -exclude *malloc* *ioerr* *fault*

do_execsql_test 8.1 {
  CREATE TABLE t1(a PRIMARY KEY, b);
  INSERT INTO t1 VALUES('a', 'b');
}

do_execsql_test 8.2 { DELETE FROM t1 WHERE b = 'b' }



do_execsql_test 8.3 { SELECT * FROM t1 } {}


do_execsql_test 8.4 {
  INSERT INTO t1 VALUES('a', 'A');
  INSERT INTO t1 VALUES('b', 'B');
  INSERT INTO t1 VALUES('c', 'A');
  INSERT INTO t1 VALUES('d', 'B');
  INSERT INTO t1 VALUES('e', 'A');
  INSERT INTO t1 VALUES('f', 'B');
................................................................................
  CREATE TABLE t1(a, b, c, UNIQUE(a));
  INSERT INTO t1 VALUES(1,2,3);
}
do_catchsql_test 11.2 { 
  INSERT INTO t1 VALUES(1,2,4)
} {1 {column a is not unique}}











































































































finish_test

#proc populate_t1 {} {
#  db eval {
#    INSERT INTO t1(a, b) VALUES(4, 'four');
#    INSERT INTO t1(a, b) VALUES(9, 'nine');

do_execsql_test 8.1 {
  CREATE TABLE t1(a PRIMARY KEY, b);
  INSERT INTO t1 VALUES('a', 'b');
}

do_execsql_test 8.2 { DELETE FROM t1 WHERE b = 'b' }

execsql {PRAGMA vdbe_trace = 1}
breakpoint
do_execsql_test 8.3 { SELECT * FROM t1 } {}
finish_test

do_execsql_test 8.4 {
  INSERT INTO t1 VALUES('a', 'A');
  INSERT INTO t1 VALUES('b', 'B');
  INSERT INTO t1 VALUES('c', 'A');
  INSERT INTO t1 VALUES('d', 'B');
  INSERT INTO t1 VALUES('e', 'A');
  INSERT INTO t1 VALUES('f', 'B');
................................................................................
  CREATE TABLE t1(a, b, c, UNIQUE(a));
  INSERT INTO t1 VALUES(1,2,3);
}
do_catchsql_test 11.2 { 
  INSERT INTO t1 VALUES(1,2,4)
} {1 {column a is not unique}}

#-------------------------------------------------------------------------
reset_db

do_execsql_test 12.1 {
  CREATE TABLE t1(a, b);
  INSERT INTO t1 VALUES(3, 'three');
  INSERT INTO t1 VALUES(1, 'one');
  INSERT INTO t1 VALUES(2, 'two');
}
do_execsql_test 12.2 { SELECT * FROM t1 ORDER BY a } {1 one 2 two 3 three}
do_execsql_test 12.3 { SELECT * FROM t1 ORDER BY b } {1 one 3 three 2 two}

#-------------------------------------------------------------------------
reset_db

do_execsql_test 13.1 {
  CREATE TABLE t1(a, b);
  INSERT INTO t1 VALUES(3, 'three');
  INSERT INTO t1 VALUES(1, 'one');
  INSERT INTO t1 VALUES(2, 'two');
}
do_execsql_test 13.2  { SELECT a FROM t1 } {3 1 2}
do_execsql_test 13.3  { CREATE TABLE t2(x, y) }
do_execsql_test 13.4  { SELECT a FROM t1 } {3 1 2}
do_execsql_test 13.5  { DROP TABLE t2 }
do_execsql_test 13.6  { SELECT a FROM t1 } {3 1 2}
do_execsql_test 13.7  { CREATE TABLE t2 AS SELECT * FROM t1 }
do_execsql_test 13.8  { SELECT a FROM t2 } {3 1 2}
do_execsql_test 13.9  { DROP TABLE t1 }
do_execsql_test 13.10 { SELECT a FROM t2 } {3 1 2}

#-------------------------------------------------------------------------
reset_db

do_execsql_test 14.1 {
  CREATE TABLE t1(a,b,c NOT NULL  DEFAULT 5);
  CREATE TABLE t2(a,b,c); 
  CREATE TABLE t3(x);

  INSERT INTO t2 VALUES(1,2,1);
  INSERT INTO t2 VALUES(2,3,2);
  INSERT INTO t2 VALUES(3,4,1);
  INSERT INTO t2 VALUES(4,5,4);

  INSERT INTO t3 VALUES(1);
}

do_execsql_test 14.2 { DROP TABLE t1 }
do_execsql_test 14.3 { SELECT * FROM t3 } 1

#-------------------------------------------------------------------------
reset_db

do_execsql_test 15.1.1 {
  CREATE TABLE t1(x PRIMARY KEY);
  BEGIN;
    INSERT INTO t1 VALUES('rollback is not implemented yet');
}

do_execsql_test 15.1.2 { ROLLBACK }
do_execsql_test 15.1.3 { SELECT * FROM t1 } {}

#-------------------------------------------------------------------------
reset_db

do_execsql_test 16.1.1 {
  PRAGMA foreign_keys = ON;
  CREATE TABLE p1(x PRIMARY KEY);
  CREATE TABLE c1(y REFERENCES p1);

  INSERT INTO p1 VALUES(2);
  INSERT INTO p1 VALUES(4);
  INSERT INTO p1 VALUES(6);
}

do_execsql_test  16.1.2 { INSERT INTO c1 VALUES(2) }
do_catchsql_test 16.1.3 { 
  INSERT INTO c1 VALUES(3) 
} {1 {foreign key constraint failed}}
do_execsql_test 16.1.4 { SELECT * FROM c1 } {2}

#-------------------------------------------------------------------------
reset_db

do_execsql_test 17.1 {

  PRAGMA foreign_keys = ON;
  CREATE TABLE t1(x PRIMARY KEY);
  CREATE TABLE t2(a PRIMARY KEY, b);

  INSERT INTO t1 VALUES('X');

  INSERT INTO t2 VALUES(1, 'A');
  INSERT INTO t2 VALUES(2, 'B');
  INSERT INTO t2 VALUES(3, 'C');
  INSERT INTO t2 VALUES(4, 'D');
  INSERT INTO t2 VALUES(5, 'A');
}

breakpoint
do_catchsql_test 17.2 { 
  INSERT INTO t1 SELECT b FROM t2;
} {1 {column x is not unique}}

do_execsql_test 17.3 { SELECT * FROM t1 } {X}

finish_test

#proc populate_t1 {} {
#  db eval {
#    INSERT INTO t1(a, b) VALUES(4, 'four');
#    INSERT INTO t1(a, b) VALUES(9, 'nine');

  lappend res [storage_prev $c1]
  lappend res [storage_key $c1]
  lappend res [storage_data $c1]
  lappend res [storage_prev $c1]
  storage_close_cursor $c1
  storage_close $x
  set res
} {SQLITE_INEXACT 014557 EF01 SQLITE_OK 012345 ABCD SQLITE_DONE}
do_test storage1-1.6 {
  set x [storage_open :memory:]
  storage_begin $x 2
  storage_replace $x 012345 abcd
  storage_replace $x 014567 ef01
  storage_replace $x 013456 deaf
  storage_replace $x 012345 eeaa

  lappend res [storage_prev $c1]
  lappend res [storage_key $c1]
  lappend res [storage_data $c1]
  lappend res [storage_prev $c1]
  storage_close_cursor $c1
  storage_close $x
  set res
} {SQLITE_INEXACT 014557 EF01 SQLITE_OK 012345 ABCD SQLITE_NOTFOUND}
do_test storage1-1.6 {
  set x [storage_open :memory:]
  storage_begin $x 2
  storage_replace $x 012345 abcd
  storage_replace $x 014567 ef01
  storage_replace $x 013456 deaf
  storage_replace $x 012345 eeaa