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Overview
| Comment: | Some UPDATE statements now working in WITHOUT ROWID tables. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | omit-rowid |
| Files: | files | file ages | folders |
| SHA1: |
5c0eaea6a26b5c3310d96b3c896ac306 |
| User & Date: | drh 2013-11-01 12:42:21 |
Context
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2013-11-01
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| 14:03 | Improved VDBE comments on the constraint checker. Fix a missing write lock in the UPDATE logic. check-in: 3bed599e user: drh tags: omit-rowid | |
| 12:42 | Some UPDATE statements now working in WITHOUT ROWID tables. check-in: 5c0eaea6 user: drh tags: omit-rowid | |
| 01:45 | A couple of bug fixes. check-in: cdf00248 user: drh tags: omit-rowid | |
Changes
Changes to src/insert.c.
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regIdx, pIdx->nKeyCol);
if( HasRowid(pTab) ){
sqlite3VdbeAddOp2(v, OP_IdxRowid, iThisCur, regR);
/* Conflict only if the rowid of the existing index entry
** is different from old-rowid */
sqlite3VdbeAddOp3(v, OP_Eq, regR, addrUniqueOk, regOldData);
}else{
/* Extract the PRIMARY KEY from the end of the index entry and
** store it in register regR..regR+nPk-1 */
for(i=0; i<pPk->nKeyCol; i++){
int x = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]);
sqlite3VdbeAddOp3(v, OP_Column, iThisCur, x, regR+i);
VdbeComment((v, "%s.%s", pTab->zName,
pTab->aCol[pPk->aiColumn[i]].zName));
}
if( pIdx->autoIndex==2 ){
/* For a PRIMARY KEY index on a WITHOUT ROWID table, always conflict
** on an INSERT. On an UPDATE, only conflict if the PRIMARY KEY
** has changed. */
if( isUpdate ){
int addrPkConflict = sqlite3VdbeCurrentAddr(v)+pPk->nKeyCol;
for(i=0; i<pPk->nKeyCol-1; i++){
sqlite3VdbeAddOp3(v, OP_Ne, regOldData+pPk->aiColumn[i]+1,
addrPkConflict, regIdx+i);
}
sqlite3VdbeAddOp3(v, OP_Eq, regOldData+pPk->aiColumn[i]+1,
addrUniqueOk, regIdx+i);
}
}else{
/* For a UNIQUE index on a WITHOUT ROWID table, conflict only if the
** PRIMARY KEY value of the match is different from the old PRIMARY KEY
** value from before the update. */
int addrConflict = sqlite3VdbeCurrentAddr(v)+pPk->nKeyCol;
assert( pIdx->nKeyCol + pPk->nKeyCol == pIdx->nColumn );
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> | > | | | | |
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regIdx, pIdx->nKeyCol);
if( HasRowid(pTab) ){
sqlite3VdbeAddOp2(v, OP_IdxRowid, iThisCur, regR);
/* Conflict only if the rowid of the existing index entry
** is different from old-rowid */
sqlite3VdbeAddOp3(v, OP_Eq, regR, addrUniqueOk, regOldData);
}else{
int x;
/* Extract the PRIMARY KEY from the end of the index entry and
** store it in register regR..regR+nPk-1 */
for(i=0; i<pPk->nKeyCol; i++){
x = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]);
sqlite3VdbeAddOp3(v, OP_Column, iThisCur, x, regR+i);
VdbeComment((v, "%s.%s", pTab->zName,
pTab->aCol[pPk->aiColumn[i]].zName));
}
if( pIdx->autoIndex==2 ){
/* For a PRIMARY KEY index on a WITHOUT ROWID table, always conflict
** on an INSERT. On an UPDATE, only conflict if the PRIMARY KEY
** has changed. */
if( isUpdate ){
int addrPkConflict = sqlite3VdbeCurrentAddr(v)+pPk->nKeyCol;
for(i=0; i<pPk->nKeyCol-1; i++){
x = pPk->aiColumn[i];
sqlite3VdbeAddOp3(v, OP_Ne, regOldData+1+x,
addrPkConflict, regIdx+x);
}
x = pPk->aiColumn[i];
sqlite3VdbeAddOp3(v, OP_Eq, regOldData+1+x, addrUniqueOk, regIdx+x);
}
}else{
/* For a UNIQUE index on a WITHOUT ROWID table, conflict only if the
** PRIMARY KEY value of the match is different from the old PRIMARY KEY
** value from before the update. */
int addrConflict = sqlite3VdbeCurrentAddr(v)+pPk->nKeyCol;
assert( pIdx->nKeyCol + pPk->nKeyCol == pIdx->nColumn );
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Changes to src/update.c.
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/* Do FK constraint checks. */
if( hasFK ){
sqlite3FkCheck(pParse, pTab, regOldRowid, 0, aXRef, chngPk);
}
/* Delete the index entries associated with the current record. */
if( pPk ){
j1 = sqlite3VdbeAddOp3(v, OP_NotFound, iDataCur, 0, regOldRowid);
}else{
j1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid);
}
sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx);
/* If changing the record number, delete the old record. */
if( hasFK || chngPk ){
|
| |
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/* Do FK constraint checks. */
if( hasFK ){
sqlite3FkCheck(pParse, pTab, regOldRowid, 0, aXRef, chngPk);
}
/* Delete the index entries associated with the current record. */
if( pPk ){
j1 = sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, 0, regKey, 0);
}else{
j1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid);
}
sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx);
/* If changing the record number, delete the old record. */
if( hasFK || chngPk ){
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