diff options
| author | unknown <timour@askmonty.org> | 2012-03-11 14:39:20 +0200 |
|---|---|---|
| committer | unknown <timour@askmonty.org> | 2012-03-11 14:39:20 +0200 |
| commit | 8aebd44e0ea9c4ae6f573f1ece27b276452122b8 (patch) | |
| tree | e2907ea46e4680c18b85dace99b5ea00d5735043 /sql/sql_lex.cc | |
| parent | f92cfdb8a9ff7f8287239c39ce4735789a23e3df (diff) | |
| download | mariadb-git-8aebd44e0ea9c4ae6f573f1ece27b276452122b8.tar.gz | |
Implementation of MDEV-28 LIMIT ROWS EXAMINED
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.
Diffstat (limited to 'sql/sql_lex.cc')
| -rw-r--r-- | sql/sql_lex.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 4a69cd3b1fa..73e4f3bea1b 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -363,6 +363,8 @@ void lex_start(THD *thd) lex->is_lex_started= TRUE; lex->used_tables= 0; + lex->limit_rows_examined= 0; + lex->limit_rows_examined_cnt= ULONGLONG_MAX; DBUG_VOID_RETURN; } |