database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-01-06 05:22:24 +03:00
Code Activity

Bug#11766594 59736: SELECT DISTINCT.. INCORRECT RESULT WITH DETERMINISTIC FUNCTION IN WHERE C

Browse Source 
There is an optimization of DISTINCT in JOIN::optimize()
which depends on THD::used_tables value. Each SELECT statement
inside SP resets used_tables value(see mysql_select()) and it
leads to wrong result. The fix is to replace THD::used_tables
with LEX::used_tables.


mysql-test/r/sp.result:
  test case
mysql-test/t/sp.test:
  test case
sql/sql_base.cc:
  THD::used_tables is replaced with LEX::used_tables
sql/sql_class.cc:
  THD::used_tables is replaced with LEX::used_tables
sql/sql_class.h:
  THD::used_tables is replaced with LEX::used_tables
sql/sql_insert.cc:
  THD::used_tables is replaced with LEX::used_tables
sql/sql_lex.cc:
  THD::used_tables is replaced with LEX::used_tables
sql/sql_lex.h:
  THD::used_tables is replaced with LEX::used_tables
sql/sql_prepare.cc:
  THD::used_tables is replaced with LEX::used_tables
sql/sql_select.cc:
  THD::used_tables is replaced with LEX::used_tables
This commit is contained in:
Sergey Glukhov
2011-08-02 11:33:45 +04:00
parent 58cf757f0b
commit 3468b55a21
10 changed files with 69 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
sql/sql_lex.cc
View File

@@ -360,6 +360,7 @@ void lex_start(THD *thd)
lex->server_options.port= -1;
lex->is_lex_started= TRUE;
lex->used_tables= 0;
DBUG_VOID_RETURN;
}