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Fixed issue with slow query logging where examined rows where wrong

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Reset 'examined_rows_count' in union to not count same rows twice

mysql-test/r/subselect_mat_cost.result:
  Test also slow query logging
mysql-test/t/subselect_mat_cost.test:
  Test also slow query logging
sql/sql_union.cc:
  Reset 'examined_rows_count' in union to not count same rows twice
This commit is contained in:
Michael Widenius 2011-09-23 13:55:01 +03:00
commit f0c6ce9ade
3 changed files with 7 additions and 0 deletions
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sql/sql_union.cc
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@ -645,6 +645,7 @@ bool st_select_lex_unit::exec()
if (!saved_error)
{
examined_rows+= thd->examined_row_count;
thd->examined_row_count= 0;
if (union_result->flush())
{
thd->lex->current_select= lex_select_save;