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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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7
src/expr.c
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@@ -1325,12 +1325,7 @@ static int gatherSelectWindowsCallback(Walker *pWalker, Expr *pExpr){
assert( pWin );
assert( IsWindowFunc(pExpr) );
assert( pWin->ppThis==0 );
if( pSelect->pWin ){
pSelect->pWin->ppThis = &pWin->pNextWin;
}
pWin->pNextWin = pSelect->pWin;
pWin->ppThis = &pSelect->pWin;
pSelect->pWin = pWin;
sqlite3WindowLink(pSelect, pWin);
}
return WRC_Continue;
}