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Allow the query planner to evaluate deterministic scalar SQL functions used in WHERE constraints if all arguments are SQL literals in order to compare the results with sqlite_stat4 sample data.

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FossilOrigin-Name: b7f1fc26d24012e1e7c7f6b3cc0b84ad2b02b8ad
This commit is contained in:
dan
2015-03-11 20:06:40 +00:00
parent cc285c5ab0
commit 18bf807689
5 changed files with 225 additions and 14 deletions
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13
src/vdbeapi.c
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@@ -637,12 +637,13 @@ sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){
*/
sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){
Vdbe *v = p->pVdbe;
sqlite3_int64 iTime = 0;
int rc;
if( v->iCurrentTime==0 ){
rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, &v->iCurrentTime);
if( rc ) v->iCurrentTime = 0;
}
return v->iCurrentTime;
if( v && v->iCurrentTime ) return v->iCurrentTime;
rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, &iTime);
if( rc ) return 0;
if( v ) v->iCurrentTime = iTime;
return iTime;
}
/*
@@ -712,6 +713,7 @@ void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){
AuxData *pAuxData;
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
if( pCtx->pVdbe==0 ) return 0;
for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;
}
@@ -735,6 +737,7 @@ void sqlite3_set_auxdata(
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
if( iArg<0 ) goto failed;
if( pVdbe==0 ) goto failed;
for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;