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  • Committer: Monty Taylor
  • Date: 2010-12-06 21:17:06 UTC
  • mto: (1977.1.1 build)
  • mto: This revision was merged to the branch mainline in revision 1980.
  • Revision ID: mordred@inaugust.com-20101206211706-iiuzzkxhh3fm10zf
Add ability to add a validation function to any sys_var. duh.

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EXPLAIN SELECT a FROM t1 WHERE a='AA' GROUP BY a;
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id      select_type     table   type    possible_keys   key     key_len ref     rows    Extra
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1       SIMPLE  t1      ref     PRIMARY PRIMARY 22      const   2       Using where; Using index
 
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1       SIMPLE  t1      ref     PRIMARY PRIMARY 22      const   4       Using where; Using index
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EXPLAIN SELECT a FROM t1 WHERE a='BB' GROUP BY a;
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id      select_type     table   type    possible_keys   key     key_len ref     rows    Extra
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1       SIMPLE  t1      ref     PRIMARY PRIMARY 22      const   1       Using where; Using index