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Ensure that SQLite does not attempt to process incompatible window functions in a single scan. Fix for [256741a1].

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FossilOrigin-Name: 4f5b2d938194fab7627486e2ced633def2c90d9d3328e3700612feb9dbfa3d9a
This commit is contained in:
dan
2019-08-15 13:53:22 +00:00
parent d4da4936cd
commit a3fcc000cb
7 changed files with 59 additions and 28 deletions
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11
src/resolve.c
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@@ -908,16 +908,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
sqlite3WalkExprList(pWalker, pWin->pPartition);
sqlite3WalkExprList(pWalker, pWin->pOrderBy);
sqlite3WalkExpr(pWalker, pWin->pFilter);
if( 0==pSel->pWin
|| 0==sqlite3WindowCompare(pParse, pSel->pWin, pWin, 0)
){
pWin->pNextWin = pSel->pWin;
if( pSel->pWin ){
pSel->pWin->ppThis = &pWin->pNextWin;
}
pSel->pWin = pWin;
pWin->ppThis = &pSel->pWin;
}
sqlite3WindowLink(pSel, pWin);
pNC->ncFlags |= NC_HasWin;
}else
#endif /* SQLITE_OMIT_WINDOWFUNC */