database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

MDEV-240: SHOW EXPLAIN: Assertion `this->optimized == 2' failed

Browse Source 
- Fix the bug: SHOW EXPLAIN may hit a case where a join is partially 
  optimized.
- Change JOIN::optimized to use enum instead of numeric constants
This commit is contained in:
Sergey Petrunya
2012-05-11 18:13:06 +04:00
parent 6fae4447f0
commit 6bce336624
6 changed files with 80 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
sql/sql_select.h
View File

@@ -1178,7 +1178,11 @@ public:
const char *zero_result_cause; ///< not 0 if exec must return zero result
bool union_part; ///< this subselect is part of union
int optimized; ///< flag to avoid double optimization in EXPLAIN
enum join_optimization_state { NOT_OPTIMIZED=0,
OPTIMIZATION_IN_PROGRESS=1,
OPTIMIZATION_DONE=2};
join_optimization_state optimized; ///< flag to avoid double optimization in EXPLAIN
bool initialized; ///< flag to avoid double init_execution calls
/*
@@ -1261,7 +1265,7 @@ public:
ref_pointer_array= items0= items1= items2= items3= 0;
ref_pointer_array_size= 0;
zero_result_cause= 0;
optimized= 0;
optimized= JOIN::NOT_OPTIMIZED;
initialized= 0;
cond_equal= 0;
having_equal= 0;