Performance improvement: Avoid using sqlite3WalkerSelectExpr()

and sqlite3WalkerSelectFrom() twice, so that the compiler will in-line their
implementation.

FossilOrigin-Name: 2b9258b8b0342330ebe8c22b59ec276fd042a05547d15b24fdf29e16280868de

1 files changed, 6 insertions, 3 deletions

diff --git a/src/expr.c b/src/expr.c
index a6bb441d5..6886d30b2 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -1345,13 +1345,16 @@ static int gatherSelectWindowsCallback(Walker *pWalker, Expr *pExpr){
   }
   return WRC_Continue;
 }
+static int gatherSelectWindowsSelectCallback(Walker *pWalker, Select *p){
+  return p==pWalker->u.pSelect ? WRC_Continue : WRC_Prune;
+}
 static void gatherSelectWindows(Select *p){
   Walker w;
   w.xExprCallback = gatherSelectWindowsCallback;
-  w.xSelectCallback = 0;
+  w.xSelectCallback = gatherSelectWindowsSelectCallback;
+  w.xSelectCallback2 = 0;
   w.u.pSelect = p;
-  sqlite3WalkSelectExpr(&w, p);
-  sqlite3WalkSelectFrom(&w, p);
+  sqlite3WalkSelect(&w, p);
 }
 #endif