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Fix for wrongly calculated Examined_rows in 4.0 UNION's.

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sql/sql_union.cc:
  Fixing a non-critical bug in 4.0 UNION's which results in erronously 
  calculated number o fexamined rows. This value is displayed in the 
  slow query log.
  
  This is a bug number #5879.
This commit is contained in:
unknown
2004-10-05 14:47:10 +03:00
parent a8cbb00d5c
commit 83b5480722
1 changed files with 7 additions and 2 deletions
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5
sql/sql_union.cc
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@@ -39,6 +39,7 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
TABLE_LIST *first_table=(TABLE_LIST *)lex->select_lex.table_list.first;
TMP_TABLE_PARAM tmp_table_param;
select_union *union_result;
ha_rows examined_rows= 0;
DBUG_ENTER("mysql_union");
/* Fix tables 'to-be-unioned-from' list to point at opened tables */
@@ -202,6 +203,7 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
union_result);
if (res)
goto exit;
examined_rows+= thd->examined_row_count;
/* Needed for the following test and for records_at_start in next loop */
table->file->info(HA_STATUS_VARIABLE);
if (found_rows_for_union & sl->options)
@@ -263,7 +265,10 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
(ORDER*) NULL, NULL, (ORDER*) NULL,
thd->options, result);
if (!res)
{
thd->limit_found_rows= (ulonglong)table->file->records + add_rows;
thd->examined_row_count+= examined_rows;
}
}
}