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Clarify the relationship between a Window object and its associated Expr.

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FossilOrigin-Name: 0cd55e98a478740032f5569ddc00fa5b0e063e90db6e00ac7598c9b7c2fffeee
This commit is contained in:
dan
2018-06-11 20:50:25 +00:00
parent 26522d1c45
commit 2a11bb23eb
6 changed files with 79 additions and 157 deletions
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2
src/expr.c
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@@ -1271,7 +1271,7 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){
if( ExprHasProperty(p, EP_Reduced|EP_TokenOnly) ){
pNew->pWin = 0;
}else{
pNew->pWin = sqlite3WindowDup(db, p->pWin);
pNew->pWin = sqlite3WindowDup(db, pNew, p->pWin);
}
if( !ExprHasProperty(p, EP_TokenOnly|EP_Leaf) ){
if( pNew->op==TK_SELECT_COLUMN ){