From 64c241fe922e0c99f69f4be9b80a6318c38cffd6 Mon Sep 17 00:00:00 2001
From: Miroslav Stampar <miroslav.stampar@gmail.com>
Date: Tue, 8 May 2012 13:45:53 +0000
Subject: [PATCH] limiting original UNION query results to only 1 result
 (potentially speeding things up in some cases)

---
 lib/core/agent.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/core/agent.py b/lib/core/agent.py
index a0f0d6018..a087313d4 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -582,7 +582,12 @@ class Agent:
         if query.startswith("SELECT "):
             query = query[len("SELECT "):]
 
-        inbandQuery = self.prefixQuery("UNION ALL SELECT ", prefix=prefix)
+        limitOriginal = ""
+        if where == PAYLOAD.WHERE.ORIGINAL:
+            if Backend.getIdentifiedDbms() in (DBMS.MYSQL, ):
+                limitOriginal = "%s " % (queries[Backend.getIdentifiedDbms()].limit.query % (1, 1))
+
+        inbandQuery = self.prefixQuery("%sUNION ALL SELECT " % limitOriginal, prefix=prefix)
 
         if limited:
             inbandQuery += ",".join(char if _ != position else '(SELECT %s)' % query for _ in xrange(0, count))