improve parameterize sql

2023-03-04 19:17:16 +00:00 · 2013-09-27 15:59:49 +08:00
parent 121f684311
commit fb4e239855
3 changed files with 21 additions and 3 deletions
@@ -175,6 +175,16 @@ public class ParameterizedOutputVisitorUtils {
    }

    public static boolean visit(ParameterizedVisitor v, SQLNullExpr x) {
+        SQLObject parent = x.getParent();
+        if (parent instanceof SQLBinaryOpExpr) {
+            SQLBinaryOpExpr binaryOpExpr = (SQLBinaryOpExpr) parent;
+            if (binaryOpExpr.getOperator() == SQLBinaryOperator.IsNot
+                || binaryOpExpr.getOperator() == SQLBinaryOperator.Is) {
+                v.print("NULL");
+                return false;
+            }
+        }
+
        v.print('?');
        v.incrementReplaceCunt();
        return false;