INSERT INTO abc VALUES('one', 'two', 'three');
} {
  SELECT indirect(1);
  UPDATE abc SET a='one point five' WHERE c = 'three';
} {
  SELECT indirect(0);
  UPDATE abc SET a='one point six' WHERE c = 'three';







}

catch {db close}
forcedelete test.db
sqlite3 db test.db
do_concat_test 2.2 {
  CREATE TABLE t1(a, b, PRIMARY KEY(b));
................................................................................
  INSERT INTO t2 VALUES(1, NULL);
  UPDATE t1 SET a = 5 WHERE a = 2;
} {
  DELETE FROM t2 WHERE a = 1;
  UPDATE t1 SET a = 4 WHERE a = 2;
  INSERT INTO t2 VALUES('x', 'y');
}













































#-------------------------------------------------------------------------
# Test that schema incompatibilities are detected correctly.
#
#   session5-3.1: Incompatible number of columns.
#   session5-3.2: Incompatible PK definition.
#

  INSERT INTO abc VALUES('one', 'two', 'three');
} {
  SELECT indirect(1);
  UPDATE abc SET a='one point five' WHERE c = 'three';
} {
  SELECT indirect(0);
  UPDATE abc SET a='one point six' WHERE c = 'three';
} {
  CREATE TABLE x1(a, b, PRIMARY KEY(a));
  SELECT indirect(1);
  INSERT INTO x1 VALUES(1, 2);
} {
  SELECT indirect(1);
  UPDATE x1 SET b = 3 WHERE a = 1;
}

catch {db close}
forcedelete test.db
sqlite3 db test.db
do_concat_test 2.2 {
  CREATE TABLE t1(a, b, PRIMARY KEY(b));
................................................................................
  INSERT INTO t2 VALUES(1, NULL);
  UPDATE t1 SET a = 5 WHERE a = 2;
} {
  DELETE FROM t2 WHERE a = 1;
  UPDATE t1 SET a = 4 WHERE a = 2;
  INSERT INTO t2 VALUES('x', 'y');
}

do_test 2.3.0 {
  catch {db close}
  forcedelete test.db
  sqlite3 db test.db
 
  set sql1 ""
  set sql2 ""
  for {set i 1} {$i < 120} {incr i} {
    append sql1 "INSERT INTO x1 VALUES($i*4, $i);"
  }
  for {set i 1} {$i < 120} {incr i} {
    append sql2 "DELETE FROM x1 WHERE a = $i*4;"
  }

  set {} {}
} {}
do_concat_test 2.3 {
  CREATE TABLE x1(a PRIMARY KEY, b)
} $sql1 $sql2 $sql1 $sql2

do_concat_test 2.4 {
  CREATE TABLE x2(a PRIMARY KEY, b);
  CREATE TABLE x3(a PRIMARY KEY, b);

  INSERT INTO x2 VALUES('a', 'b');
  INSERT INTO x2 VALUES('x', 'y');
  INSERT INTO x3 VALUES('a', 'b');
} {
  INSERT INTO x2 VALUES('c', 'd');
  INSERT INTO x3 VALUES('e', 'f');
  INSERT INTO x3 VALUES('x', 'y');
}

do_concat_test 2.5 {
  UPDATE x3 SET b = 'Y' WHERE a = 'x'
} {
  DELETE FROM x3 WHERE a = 'x'
} {
  DELETE FROM x2 WHERE a = 'a'
} {
  INSERT INTO x2 VALUES('a', 'B');
}


#-------------------------------------------------------------------------
# Test that schema incompatibilities are detected correctly.
#
#   session5-3.1: Incompatible number of columns.
#   session5-3.2: Incompatible PK definition.
#

        sqlite3_free(pExist);
        return SQLITE_NOMEM;
      }
      memset(pNew, 0, sizeof(SessionChange));
      pNew->bIndirect = (bIndirect && pExist->bIndirect);
      aCsr = pNew->aRecord = (u8 *)&pNew[1];

      if( op1==SQLITE_INSERT && op2==SQLITE_UPDATE ){
        u8 *a1 = aRec;

        pNew->bInsert = SQLITE_INSERT;
        sessionReadRecord(&a1, pTab->nCol, 0);
        sessionMergeRecord(&aCsr, pTab, pExist->aRecord, a1);






      }

      else if( op1==SQLITE_UPDATE && op2==SQLITE_UPDATE ){
        u8 *a1 = pExist->aRecord;
        u8 *a2 = aRec;
        sessionReadRecord(&a1, pTab->nCol, 0);
        sessionReadRecord(&a2, pTab->nCol, 0);
        pNew->bInsert = SQLITE_UPDATE;
        if( 0==sessionMergeUpdate(&aCsr, pTab, aRec, pExist->aRecord, a1, a2) ){
          sqlite3_free(pNew);
          pNew = 0;
        }
      }
      else if( op1==SQLITE_UPDATE && op2==SQLITE_DELETE ){
        pNew->bInsert = SQLITE_DELETE;
        sessionMergeRecord(&aCsr, pTab, aRec, pExist->aRecord);
      }
      else if( op1==SQLITE_DELETE && op2==SQLITE_INSERT ){
        pNew->bInsert = SQLITE_UPDATE;
        if( 0==sessionMergeUpdate(&aCsr, pTab, pExist->aRecord, 0, aRec, 0) ){
          sqlite3_free(pNew);
          pNew = 0;
        }
      }

      if( pNew ){
        pNew->nRecord = (aCsr - pNew->aRecord);
      }
      sqlite3_free(pExist);
    }
  }
................................................................................
    int bIndirect;
    SessionChange *pChange;
    SessionChange *pExist = 0;
    SessionChange **pp;

    assert( pIter->apValue==0 );
    sqlite3changeset_op(pIter, &zNew, &nCol, &op, &bIndirect);





    if( !pTab || zNew!=pTab->zName ){
      /* Search the list for a matching table */
      int nNew = strlen(zNew);
      u8 *abPK;

      sqlite3changeset_pk(pIter, &abPK, 0);

        sqlite3_free(pExist);
        return SQLITE_NOMEM;
      }
      memset(pNew, 0, sizeof(SessionChange));
      pNew->bIndirect = (bIndirect && pExist->bIndirect);
      aCsr = pNew->aRecord = (u8 *)&pNew[1];

      if( op1==SQLITE_INSERT ){             /* INSERT + UPDATE */
        u8 *a1 = aRec;
        assert( op2==SQLITE_UPDATE );
        pNew->bInsert = SQLITE_INSERT;
        sessionReadRecord(&a1, pTab->nCol, 0);
        sessionMergeRecord(&aCsr, pTab, pExist->aRecord, a1);
      }else if( op1==SQLITE_DELETE ){       /* DELETE + INSERT */
        assert( op2==SQLITE_INSERT );
        pNew->bInsert = SQLITE_UPDATE;
        if( 0==sessionMergeUpdate(&aCsr, pTab, pExist->aRecord, 0, aRec, 0) ){
          sqlite3_free(pNew);
          pNew = 0;
        }
      }else if( op2==SQLITE_UPDATE ){       /* UPDATE + UPDATE */
        assert( op1==SQLITE_UPDATE );
        u8 *a1 = pExist->aRecord;
        u8 *a2 = aRec;
        sessionReadRecord(&a1, pTab->nCol, 0);
        sessionReadRecord(&a2, pTab->nCol, 0);
        pNew->bInsert = SQLITE_UPDATE;
        if( 0==sessionMergeUpdate(&aCsr, pTab, aRec, pExist->aRecord, a1, a2) ){
          sqlite3_free(pNew);
          pNew = 0;
        }
      }else{                                /* UPDATE + DELETE */
        assert( op1==SQLITE_UPDATE && op2==SQLITE_DELETE );
        pNew->bInsert = SQLITE_DELETE;
        sessionMergeRecord(&aCsr, pTab, aRec, pExist->aRecord);
      }








      if( pNew ){
        pNew->nRecord = (aCsr - pNew->aRecord);
      }
      sqlite3_free(pExist);
    }
  }
................................................................................
    int bIndirect;
    SessionChange *pChange;
    SessionChange *pExist = 0;
    SessionChange **pp;

    assert( pIter->apValue==0 );
    sqlite3changeset_op(pIter, &zNew, &nCol, &op, &bIndirect);

    assert( zNew>=(char *)pChangeset && zNew-nChangeset<((char *)pChangeset) );
    assert( !pTab || pTab->zName-nChangeset<(char *)pChangeset );
    assert( !pTab || zNew>=pTab->zName );

    if( !pTab || zNew!=pTab->zName ){
      /* Search the list for a matching table */
      int nNew = strlen(zNew);
      u8 *abPK;

      sqlite3changeset_pk(pIter, &abPK, 0);