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Reduce the size of the NameContext object by grouping seldom-used fields

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into a union.

FossilOrigin-Name: dba3095feeeb55b5c0ebe33bdd4be8ba1f24478406685d3a042a69d9c380e742
This commit is contained in:
drh
2018-04-16 10:34:13 +00:00
parent 54f2cd905b
commit 25c3b8caf4
6 changed files with 29 additions and 19 deletions
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14
src/resolve.c
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@@ -383,10 +383,12 @@ static int lookupName(
** is supported for backwards compatibility only. Hence, we issue a warning
** on sqlite3_log() whenever the capability is used.
*/
if( (pEList = pNC->pEList)!=0
&& zTab==0
if( (pNC->ncFlags & NC_UEList)!=0
&& cnt==0
&& zTab==0
){
pEList = pNC->uNC.pEList;
assert( pEList!=0 );
for(j=0; j<pEList->nExpr; j++){
char *zAs = pEList->a[j].zName;
if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){
@@ -915,8 +917,8 @@ static int resolveOrderByTermToExprList(
memset(&nc, 0, sizeof(nc));
nc.pParse = pParse;
nc.pSrcList = pSelect->pSrc;
nc.pEList = pEList;
nc.ncFlags = NC_AllowAgg;
nc.uNC.pEList = pEList;
nc.ncFlags = NC_AllowAgg|NC_UEList;
nc.nErr = 0;
db = pParse->db;
savedSuppErr = db->suppressErr;
@@ -1299,7 +1301,9 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
** Minor point: If this is the case, then the expression will be
** re-evaluated for each reference to it.
*/
sNC.pEList = p->pEList;
assert( (sNC.ncFlags & (NC_UAggInfo))==0 );
sNC.uNC.pEList = p->pEList;
sNC.ncFlags |= NC_UEList;
if( sqlite3ResolveExprNames(&sNC, p->pHaving) ) return WRC_Abort;
if( sqlite3ResolveExprNames(&sNC, p->pWhere) ) return WRC_Abort;