improve sqlwall: union

2023-03-04 19:17:16 +00:00 · 2014-09-03 18:12:35 +08:00
parent 9b58d41f69
commit fc7f5e016b
9 changed files with 30 additions and 14 deletions
@@ -2147,6 +2147,14 @@ public class WallVisitorUtils {
            if (isTopUpdateStatement || isTopInsertStatement) {
                return;
            }
+            
+            if (x.getLeft() instanceof SQLSelectQueryBlock) {
+                SQLSelectQueryBlock left = (SQLSelectQueryBlock) x.getLeft();
+                SQLTableSource tableSource = left.getFrom();
+                if (left.getWhere() == null && tableSource != null && tableSource instanceof SQLExprTableSource) {
+                    return;
+                }
+            }

            WallContext context = WallContext.current();
            if (context != null) {