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| author | unknown <bell@sanja.is.com.ua> | 2004-05-06 20:40:21 +0300 |
|---|---|---|
| committer | unknown <bell@sanja.is.com.ua> | 2004-05-06 20:40:21 +0300 |
| commit | 1a4f499ca87634d4256d2531bab68b32f3e5fa49 (patch) | |
| tree | 0daaf7c780326e902f4ac6b9107be15ccc5ae28a /sql/sql_lex.h | |
| parent | cd57fc8bdabbd3b1b44fa98ae1c3bc7c66fcd08c (diff) | |
| download | mariadb-git-1a4f499ca87634d4256d2531bab68b32f3e5fa49.tar.gz | |
EXPLAIN UNION using same routing which used for execution which allow return correct bug messages (Bug #3639)
EXPLAIN of hidden SELECT of UNION
mysql-test/r/derived.result:
explain of hidden select
mysql-test/r/subselect.result:
explain of hidden select
mysql-test/r/union.result:
explain of hidden select
correct error messages on explain
mysql-test/t/subselect.test:
show eliminated costants in WHERE clause
mysql-test/t/union.test:
correct error messages on EXPLAIN with union
sql/item.cc:
fixed name constructing for global ORDER BY items
sql/sql_class.h:
select ID can be negative (for hidden SELECTs)
removed unused field
sql/sql_lex.cc:
new flag of UNION EXPLAIN
sql/sql_lex.h:
new flag of UNION EXPLAIN
select ID can be negative (for hidden SELECTs)
sql/sql_select.cc:
EXPLAIN UNION using same routing which used for execution
explain for hidden SELECT of UNION
sql/sql_union.cc:
EXPLAIN UNION using same routing which used for execution
Diffstat (limited to 'sql/sql_lex.h')
| -rw-r--r-- | sql/sql_lex.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 50f13a0391c..fd6e9142275 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -336,6 +336,7 @@ public: st_select_lex *fake_select_lex; st_select_lex *union_distinct; /* pointer to the last UNION DISTINCT */ + bool describe; /* union exec() called for EXPLAIN */ void init_query(); bool create_total_list(THD *thd, st_lex *lex, TABLE_LIST **result); @@ -413,7 +414,7 @@ public: ulong table_join_options; uint in_sum_expr; - uint select_number; /* number of select (used for EXPLAIN) */ + int select_number; /* number of select (used for EXPLAIN) */ uint with_wild; /* item list contain '*' */ bool braces; /* SELECT ... UNION (SELECT ... ) <- this braces */ /* TRUE when having fix field called in processing of this SELECT */ |