database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

Implementation of MDEV-28 LIMIT ROWS EXAMINED

Browse Source 
https://mariadb.atlassian.net/browse/MDEV-28
  
This task implements a new clause LIMIT ROWS EXAMINED <num>
as an extention to the ANSI LIMIT clause. This extension
allows to limit the number of rows and/or keys a query
would access (read and/or write) during query execution.
This commit is contained in:
unknown
2012-03-11 14:39:20 +02:00
parent f92cfdb8a9
commit 8aebd44e0e
17 changed files with 1635 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
sql/sql_parse.cc
View File

@ -5876,6 +5876,7 @@ void mysql_reset_thd_for_next_command(THD *thd, my_bool calculate_userstat)
thd->total_warn_count=0; // Warnings for this query
thd->rand_used= 0;
thd->sent_row_count= thd->examined_row_count= 0;
thd->accessed_rows_and_keys= 0;
/* Copy data for user stats */
if ((thd->userstat_running= calculate_userstat))