Query with CASE and nested functions results in very long execution #2852
Last updated: 2011-09-16 15:04:37 +0200
Date: 2011-08-07 17:06:11 +0200
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.107 Safari/535.1
SQL statement with case division and embedded functions compiles about 2 minutes on my computer. If I change "/" to "*" everything is executed immediately.
Steps to Reproduce:
1.CREATE TABLE t (c INT);
Very long compilation time. It looks like generated MAL code is not correct
I guess that this script must be compiled immediately
I managed to simplify my initial script which hanged the computer to this test case. Further simplifications lead to immediate execution.
Date: 2011-08-19 16:29:20 +0200
fixed. The long execution time was caused by recusive inplace modifing the relational tree
Date: 2011-08-22 08:17:06 +0200
We should consider adding a test (also) for this one.
Date: 2011-08-22 16:41:13 +0200
For complete details, see http//devmonetdborg/hg/MonetDB?cmd=changeset;node=fa813932a753
Date: 2011-09-16 15:04:37 +0200
The Aug2011 version has been released.
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