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Add the logic to keep partial indices up to date through DML statements and

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when new partial indices are created.  This new logic is untested except to
verify that it does not interfere with full indices.

FossilOrigin-Name: fb9044d15ad4fd6ae4a38858c0c0e6fe9d4faa25
This commit is contained in:
drh
2013-08-01 01:14:43 +00:00
parent 4bd5f73fa0
commit b2b9d3d758
11 changed files with 88 additions and 42 deletions
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35
src/delete.c
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@@ -591,11 +591,14 @@ void sqlite3GenerateRowIndexDelete(
int i;
Index *pIdx;
int r1;
int iPartIdxLabel;
Vdbe *v = pParse->pVdbe;
for(i=1, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){
if( aRegIdx!=0 && aRegIdx[i-1]==0 ) continue;
r1 = sqlite3GenerateIndexKey(pParse, pIdx, iCur, 0, 0);
sqlite3VdbeAddOp3(pParse->pVdbe, OP_IdxDelete, iCur+i, r1,pIdx->nColumn+1);
r1 = sqlite3GenerateIndexKey(pParse, pIdx, iCur, 0, 0, &iPartIdxLabel);
sqlite3VdbeAddOp3(v, OP_IdxDelete, iCur+i, r1, pIdx->nColumn+1);
sqlite3VdbeResolveLabel(v, iPartIdxLabel);
}
}
@@ -609,13 +612,21 @@ void sqlite3GenerateRowIndexDelete(
** registers that holds the elements of the index key. The
** block of registers has already been deallocated by the time
** this routine returns.
**
** If *piPartIdxLabel is not NULL, fill it in with a label and jump
** to that label if pIdx is a partial index that should be skipped.
** A partial index should be skipped if its WHERE clause evaluates
** to false or null. If pIdx is not a partial index, *piPartIdxLabel
** will be set to zero which is an empty label that is ignored by
** sqlite3VdbeResolveLabel().
*/
int sqlite3GenerateIndexKey(
Parse *pParse, /* Parsing context */
Index *pIdx, /* The index for which to generate a key */
int iCur, /* Cursor number for the pIdx->pTable table */
int regOut, /* Write the new index key to this register */
int doMakeRec /* Run the OP_MakeRecord instruction if true */
Parse *pParse, /* Parsing context */
Index *pIdx, /* The index for which to generate a key */
int iCur, /* Cursor number for the pIdx->pTable table */
int regOut, /* Write the new index key to this register */
int doMakeRec, /* Run the OP_MakeRecord instruction if true */
int *piPartIdxLabel /* OUT: Jump to this label to skip partial index */
){
Vdbe *v = pParse->pVdbe;
int j;
@@ -623,6 +634,16 @@ int sqlite3GenerateIndexKey(
int regBase;
int nCol;
if( piPartIdxLabel ){
if( pIdx->pPartIdxWhere ){
*piPartIdxLabel = sqlite3VdbeMakeLabel(v);
pParse->iPartIdxTab = iCur;
sqlite3ExprIfFalse(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel,
SQLITE_JUMPIFNULL);
}else{
*piPartIdxLabel = 0;
}
}
nCol = pIdx->nColumn;
regBase = sqlite3GetTempRange(pParse, nCol+1);
sqlite3VdbeAddOp2(v, OP_Rowid, iCur, regBase+nCol);