SQLite

    for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
      assert( pIdx->pSchema==pTab->pSchema );
      sqlite3VdbeAddOp2(v, OP_Clear, pIdx->tnum, iDb);
    }
  }else
#endif /* SQLITE_OMIT_TRUNCATE_OPTIMIZATION */
  {
    u16 wcf = WHERE_ONEPASS_DESIRED|WHERE_DUPLICATES_OK|WHERE_SEEK_TABLE;
    if( sNC.ncFlags & NC_VarSelect ) bComplex = 1;
    wcf |= (bComplex ? 0 : WHERE_ONEPASS_MULTIROW);
    if( HasRowid(pTab) ){
      /* For a rowid table, initialize the RowSet to an empty set */
      pPk = 0;
      nPk = 1;
      iRowSet = ++pParse->nMem;

#define WHERE_GROUPBY          0x0100 /* pOrderBy is really a GROUP BY */
#define WHERE_DISTINCTBY       0x0200 /* pOrderby is really a DISTINCT clause */
#define WHERE_WANT_DISTINCT    0x0400 /* All output needs to be distinct */
#define WHERE_SORTBYGROUP      0x0800 /* Support sqlite3WhereIsSorted() */
#define WHERE_REOPEN_IDX       0x1000 /* Try to use OP_ReopenIdx */
#define WHERE_ONEPASS_MULTIROW 0x2000 /* ONEPASS is ok with multiple rows */
#define WHERE_USE_LIMIT        0x4000 /* There is a constant LIMIT clause */
#define WHERE_SEEK_TABLE       0x8000 /* Do not defer seeks on main table */

/* Allowed return values from sqlite3WhereIsDistinct()
*/
#define WHERE_DISTINCT_NOOP      0  /* DISTINCT keyword not used */
#define WHERE_DISTINCT_UNIQUE    1  /* No duplicates */
#define WHERE_DISTINCT_ORDERED   2  /* All duplicates are adjacent */
#define WHERE_DISTINCT_UNORDERED 3  /* Duplicates are scattered */

    /* Seek the table cursor, if required */
    disableTerm(pLevel, pRangeStart);
    disableTerm(pLevel, pRangeEnd);
    if( omitTable ){
      /* pIdx is a covering index.  No need to access the main table. */
    }else if( HasRowid(pIdx->pTable) ){
      if( pWInfo->eOnePass!=ONEPASS_OFF
       || (pWInfo->wctrlFlags & WHERE_SEEK_TABLE)!=0
      ){
        iRowidReg = ++pParse->nMem;
        sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, iRowidReg);
        sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg);
        sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, iRowidReg);
        VdbeCoverage(v);
      }else{
        codeDeferredSeek(pWInfo, pIdx, iCur, iIdxCur);

    /* Run a separate WHERE clause for each term of the OR clause.  After
    ** eliminating duplicates from other WHERE clauses, the action for each
    ** sub-WHERE clause is to to invoke the main loop body as a subroutine.
    */
    wctrlFlags =  WHERE_OMIT_OPEN_CLOSE
                | WHERE_FORCE_TABLE
                | WHERE_ONETABLE_ONLY
                | WHERE_NO_AUTOINDEX
                | (pWInfo->wctrlFlags & WHERE_SEEK_TABLE);
    for(ii=0; ii<pOrWc->nTerm; ii++){
      WhereTerm *pOrTerm = &pOrWc->a[ii];
      if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){
        WhereInfo *pSubWInfo;           /* Info for single OR-term scan */
        Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */
        int jmp1 = 0;                   /* Address of jump operation */
        if( pAndExpr && !ExprHasProperty(pOrExpr, EP_FromJoin) ){

do_execsql_test intpkey-16.0 {
  CREATE TABLE t16a(id "INTEGER" PRIMARY KEY AUTOINCREMENT, b [TEXT], c `INT`);
} {}
do_execsql_test intpkey-16.1 {
  PRAGMA table_info=t16a;
} {0 id INTEGER 0 {} 1 1 b TEXT 0 {} 0 2 c INT 0 {} 0}

# 2016-05-06 ticket https://www.sqlite.org/src/tktview/16c9801ceba4923939085
# When the schema contains an index on the IPK and no other index
# and a WHERE clause on a delete uses an OR where both sides referencing
# the IPK, then it is possible that the OP_Delete will fail because there
# deferred seek of the OP_Seek is not resolved prior to reaching the OP_Delete.
#
do_execsql_test intpkey-17.0 {
  CREATE TABLE t17(x INTEGER PRIMARY KEY, y TEXT);
  INSERT INTO t17(x,y) VALUES(123,'elephant'),(248,'giraffe');
  CREATE INDEX t17x ON t17(x);
  DELETE FROM t17 WHERE x=99 OR x<130;
  SELECT * FROM t17;
} {248 giraffe}
do_execsql_test intpkey-17.1 {
  DROP INDEX t17x;
  DELETE FROM t17;
  INSERT INTO t17(x,y) VALUES(123,'elephant'),(248,'giraffe');
  CREATE INDEX t17x ON t17(abs(x));
  DELETE FROM t17 WHERE abs(x) IS NULL OR abs(x)<130;
  SELECT * FROM t17;
} {248 giraffe}

finish_test