From f9bc0235c11b909e3b2ac6d5bbdd8558424479ff Mon Sep 17 00:00:00 2001
From: Martijn Vermaat <martijn@vermaat.name>
Date: Thu, 21 Jul 2011 07:40:17 +0000
Subject: [PATCH] This is basically r296 and r297 applied to trunk by hand.
git-svn-id: https://humgenprojects.lumc.nl/svn/mutalyzer/trunk@303 eb6bd6ab-9ccd-42b9-aceb-e2899b4a52f1
---
src/Modules/Db.py | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/src/Modules/Db.py b/src/Modules/Db.py
index 88a18f77..8e3a1108 100644
--- a/src/Modules/Db.py
+++ b/src/Modules/Db.py
@@ -1487,12 +1487,19 @@ class Batch(Db) :
@rtype: triple
"""
+ # To optimize this query, make sure to have two indices on the
+ # table:
+ # - UNIQUE INDEX (QueueID)
+ # - INDEX (JobID, QueueID)
statement = """
SELECT QueueID, Input, Flags
- FROM BatchQueue
- WHERE JobID = %s
- ORDER BY QueueID
- LIMIT 1;
+ FROM BatchQueue
+ WHERE QueueID = (
+ SELECT MIN(QueueID)
+ FROM BatchQueue
+ GROUP BY JobID
+ HAVING JobID = %s
+ );
""", jobID
results = self.query(statement)
--
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