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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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22
src/insert.c
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@@ -1379,9 +1379,19 @@ void sqlite3GenerateConstraintChecks(
for(iCur=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, iCur++){
int regIdx;
int regR;
int addrSkipRow = 0;
if( aRegIdx[iCur]==0 ) continue; /* Skip unused indices */
if( pIdx->pPartIdxWhere ){
sqlite3VdbeAddOp2(v, OP_Null, 0, aRegIdx[iCur]);
addrSkipRow = sqlite3VdbeMakeLabel(v);
pParse->ckBase = regData;
sqlite3ExprIfFalse(pParse, pIdx->pPartIdxWhere, addrSkipRow,
SQLITE_JUMPIFNULL);
pParse->ckBase = 0;
}
/* Create a key for accessing the index entry */
regIdx = sqlite3GetTempRange(pParse, pIdx->nColumn+1);
for(i=0; i<pIdx->nColumn; i++){
@@ -1470,6 +1480,7 @@ void sqlite3GenerateConstraintChecks(
}
}
sqlite3VdbeJumpHere(v, j3);
sqlite3VdbeResolveLabel(v, addrSkipRow);
sqlite3ReleaseTempReg(pParse, regR);
}
@@ -1499,7 +1510,6 @@ void sqlite3CompleteInsertion(
){
int i;
Vdbe *v;
int nIdx;
Index *pIdx;
u8 pik_flags;
int regData;
@@ -1508,9 +1518,11 @@ void sqlite3CompleteInsertion(
v = sqlite3GetVdbe(pParse);
assert( v!=0 );
assert( pTab->pSelect==0 ); /* This table is not a VIEW */
for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nIdx++){}
for(i=nIdx-1; i>=0; i--){
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
if( aRegIdx[i]==0 ) continue;
if( pIdx->pPartIdxWhere ){
sqlite3VdbeAddOp2(v, OP_IsNull, aRegIdx[i], sqlite3VdbeCurrentAddr(v)+2);
}
sqlite3VdbeAddOp2(v, OP_IdxInsert, baseCur+i+1, aRegIdx[i]);
if( useSeekResult ){
sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT);
@@ -1612,6 +1624,7 @@ static int xferCompatibleCollation(const char *z1, const char *z2){
** * The same DESC and ASC markings occurs on all columns
** * The same onError processing (OE_Abort, OE_Ignore, etc)
** * The same collating sequence on each column
** * The index has the exact same WHERE clause
*/
static int xferCompatibleIndex(Index *pDest, Index *pSrc){
int i;
@@ -1634,6 +1647,9 @@ static int xferCompatibleIndex(Index *pDest, Index *pSrc){
return 0; /* Different collating sequences */
}
}
if( sqlite3ExprCompare(pSrc->pPartIdxWhere, pDest->pPartIdxWhere) ){
return 0; /* Different WHERE clauses */
}
/* If no test above fails then the indices must be compatible */
return 1;