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  • Committer: Lee Bieber
  • Date: 2010-08-21 22:42:44 UTC
  • mto: (1727.1.1 build)
  • mto: This revision was merged to the branch mainline in revision 1728.
  • Revision ID: lbieber@kalebral-2.local-20100821224244-kh3gmsvi45dlbuu1
For the feature request (https://blueprints.launchpad.net/drizzle/+spec/limit-maximum-sort-size) 
that is requesting the ability to cap various buffers, we first tried setting the join buffer to 
1 to see how that would affect the test results and expose test results that need to 
sorted (by adding --sorted_result). 

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      (1, 'Z001'),
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      (2, 'R002');
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--sorted_result
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SELECT DISTINCTROW email, shipcode FROM t1, t2 WHERE t1.infoID=t2.infoID;
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SELECT DISTINCTROW email FROM t1 ORDER BY dateentered DESC;
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SELECT DISTINCTROW email, shipcode FROM t1, t2 WHERE t1.infoID=t2.infoID ORDER BY dateentered DESC;
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EXPLAIN SELECT DISTINCT a FROM t1;
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EXPLAIN SELECT DISTINCT a,b FROM t1;
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EXPLAIN SELECT DISTINCT t1_1.a, t1_1.b FROM t1 t1_1, t1 t1_2;
 
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--sorted_result
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EXPLAIN SELECT DISTINCT t1_1.a, t1_1.b FROM t1 t1_1, t1 t1_2
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  WHERE t1_1.a = t1_2.a;
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EXPLAIN SELECT a FROM t1 GROUP BY a;