From 07dc1436af2324b9b31ead30bc3808952c8cba7e Mon Sep 17 00:00:00 2001
From: Syngnat <92659908+Syngnat@users.noreply.github.com>
Date: Wed, 8 Jul 2026 11:51:05 +0800
Subject: [PATCH] perf(oceanbase): use FETCH FIRST for Oracle auto limit

---
 frontend/src/utils/queryAutoLimit.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontend/src/utils/queryAutoLimit.ts b/frontend/src/utils/queryAutoLimit.ts
index b0383c56..053bea63 100644
--- a/frontend/src/utils/queryAutoLimit.ts
+++ b/frontend/src/utils/queryAutoLimit.ts
@@ -322,7 +322,7 @@ export const applyQueryAutoLimit = (
     if (offsetPos >= 0 && (fromPos < 0 || offsetPos > fromPos)) return { sql, applied: false, maxRows };
     const forPos = findTopLevelKeyword(main, 'for');
     if (forPos >= 0 && (fromPos < 0 || forPos > fromPos)) return { sql, applied: false, maxRows };
-    return { sql: `SELECT * FROM (${main.trimEnd()}) WHERE ROWNUM <= ${maxRows}${tail}`, applied: true, maxRows };
+    return { sql: `${main.trimEnd()} FETCH FIRST ${maxRows} ROWS ONLY${tail}`, applied: true, maxRows };
   }
 
   const offsetPos = findTopLevelKeyword(main, 'offset');