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Overview
Comment:Fix a problem in OP_IdxDelete as used by REPLACE conflict resolution that comes up due to recent enhancements that reduce the work required for UNIQUE NOT NULL indices.
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SHA1:61d7d4753f36932293c0eb1ca893b17d18355ad3
User & Date: drh 2013-11-11 00:43:21
Context
2013-11-11
01:42
Modify a HeapValidate assert in the Win32 native allocator. check-in: aaed7d1d user: mistachkin tags: trunk
00:43
Fix a problem in OP_IdxDelete as used by REPLACE conflict resolution that comes up due to recent enhancements that reduce the work required for UNIQUE NOT NULL indices. check-in: 61d7d475 user: drh tags: trunk
2013-11-10
00:03
Fix typo in comment and remove superfluous blank line. No changes to code. check-in: 023233f1 user: mistachkin tags: trunk
Changes
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Changes to src/vdbe.c.

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  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
  pCrsr = pC->pCursor;
  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
  if( ALWAYS(pCrsr!=0) ){
    r.pKeyInfo = pC->pKeyInfo;
    r.nField = (u16)pOp->p3;
    r.flags = 0;
    r.aMem = &aMem[pOp->p2];
#ifdef SQLITE_DEBUG
    { int i; for(i=0; i<r.nField; i++) assert( memIsValid(&r.aMem[i]) ); }
#endif
    rc = sqlite3BtreeMovetoUnpacked(pCrsr, &r, 0, 0, &res);
    if( rc==SQLITE_OK && res==0 ){
      rc = sqlite3BtreeDelete(pCrsr);







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  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
  pCrsr = pC->pCursor;
  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
  if( ALWAYS(pCrsr!=0) ){
    r.pKeyInfo = pC->pKeyInfo;
    r.nField = (u16)pOp->p3;
    r.flags = UNPACKED_PREFIX_MATCH;
    r.aMem = &aMem[pOp->p2];
#ifdef SQLITE_DEBUG
    { int i; for(i=0; i<r.nField; i++) assert( memIsValid(&r.aMem[i]) ); }
#endif
    rc = sqlite3BtreeMovetoUnpacked(pCrsr, &r, 0, 0, &res);
    if( rc==SQLITE_OK && res==0 ){
      rc = sqlite3BtreeDelete(pCrsr);

Changes to test/conflict2.test.

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do_test conflict2-13.2 {
  execsql {
    REPLACE INTO t13 VALUES(3);
    COMMIT;
    SELECT * FROM t13;
  }
} {1 3}



































finish_test








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do_test conflict2-13.2 {
  execsql {
    REPLACE INTO t13 VALUES(3);
    COMMIT;
    SELECT * FROM t13;
  }
} {1 3}

# Test for an unreleased bug in the REPLACE conflict resolution
# discovered on 2013-11-09.  
#
do_execsql_test conflict2-14.1 {
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(
    x TEXT PRIMARY KEY NOT NULL, 
    y TEXT NOT NULL,
    z INTEGER
  );
  INSERT INTO t1 VALUES('alpha','beta',1);
  CREATE UNIQUE INDEX t1xy ON t1(x,y);
  REPLACE INTO t1(x,y,z) VALUES('alpha','gamma',1);
  PRAGMA integrity_check;
  SELECT x,y FROM t1 INDEXED BY t1xy;
  SELECT x,y,z FROM t1 NOT INDEXED;
} {ok alpha gamma alpha gamma 1}
do_execsql_test conflict2-14.2 {
  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(
    x TEXT PRIMARY KEY NOT NULL, 
    y TEXT NOT NULL,
    z INTEGER
  ) WITHOUT ROWID;
  INSERT INTO t1 VALUES('alpha','beta',1);
  CREATE UNIQUE INDEX t1xy ON t1(x,y);
  REPLACE INTO t1(x,y,z) VALUES('alpha','gamma',1);
  PRAGMA integrity_check;
  SELECT x,y FROM t1 INDEXED BY t1xy;
  SELECT x,y,z FROM t1 NOT INDEXED;
} {ok alpha gamma alpha gamma 1}



finish_test