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Add support for the WINDOW clause.

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FossilOrigin-Name: 19c983b511f1c823fdfb051713681b4c779f02fa83b41189afca0a9b8b72048d
This commit is contained in:
dan
2018-06-08 20:58:27 +00:00
parent dacf1de95c
commit e3bf632cc2
12 changed files with 136 additions and 39 deletions
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15
src/resolve.c
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@@ -779,12 +779,13 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
sqlite3WalkExprList(pWalker, pList);
if( is_agg ){
if( pExpr->pWin ){
sqlite3WindowUpdate(pParse, pExpr->pWin, pDef);
if( 0==pNC->pWin
|| 0==sqlite3WindowCompare(pParse, pNC->pWin, pExpr->pWin)
Select *pSel = pNC->pWinSelect;
sqlite3WindowUpdate(pParse, pSel->pWinDefn, pExpr->pWin, pDef);
if( 0==pSel->pWin
|| 0==sqlite3WindowCompare(pParse, pSel->pWin, pExpr->pWin)
){
pExpr->pWin->pNextWin = pNC->pWin;
pNC->pWin = pExpr->pWin;
pExpr->pWin->pNextWin = pSel->pWin;
pSel->pWin = pExpr->pWin;
}
pExpr->pWin->pFunc = pDef;
pExpr->pWin->nArg = (pExpr->x.pList ? pExpr->x.pList->nExpr : 0);
@@ -1262,6 +1263,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
*/
memset(&sNC, 0, sizeof(sNC));
sNC.pParse = pParse;
sNC.pWinSelect = p;
if( sqlite3ResolveExprNames(&sNC, p->pLimit) ){
return WRC_Abort;
}
@@ -1423,9 +1425,6 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
return WRC_Abort;
}
p->pWin = sNC.pWin;
sNC.pWin = 0;
/* Advance to the next term of the compound
*/
p = p->pPrior;