Fix for bug #29444: crash with partition refering to table in create-select

Problem: creating a partitioned table during name resolution for the 
partition function we search for column names in all parts of the
CREATE TABLE query. It is superfluous (and wrong) sometimes.

Fix: launch name resolution for the partition function against
the table we're creating.


mysql-test/r/partition.result:
  Fix for bug #29444: crash with partition refering to table in create-select
    - test result.
mysql-test/t/partition.test:
  Fix for bug #29444: crash with partition refering to table in create-select
    - test result.
sql/item.cc:
  Fix for bug #29444: crash with partition refering to table in create-select
    - LEX::use_only_table_context introduced, which is used in the 
      Item_field::fix_fields() to resolve names only against
      context->first_name_resolution_table/last_name_resolution_table.
sql/sql_lex.cc:
  Fix for bug #29444: crash with partition refering to table in create-select
    - LEX::use_only_table_context introduced, which is used in the 
      Item_field::fix_fields() to resolve names only against
      context->first_name_resolution_table/last_name_resolution_table.
sql/sql_lex.h:
  Fix for bug #29444: crash with partition refering to table in create-select
    - LEX::use_only_table_context introduced, which is used in the 
      Item_field::fix_fields() to resolve names only against
      context->first_name_resolution_table/last_name_resolution_table.
sql/sql_partition.cc:
  Fix for bug #29444: crash with partition refering to table in create-select
    - set the lex->use_only_table_context before the func_expr->fix_fields()
      call to ensure we're resolving names against the table we're creating;
      then restore it back after the call.

1 files changed, 20 insertions, 0 deletions

diff --git a/mysql-test/r/partition.result b/mysql-test/r/partition.result
index 5d985d053fc..7120e3ea9e6 100644
--- a/mysql-test/r/partition.result
+++ b/mysql-test/r/partition.result
@@ -1267,4 +1267,24 @@ ALTER TABLE general_log PARTITION BY RANGE (TO_DAYS(event_time))
 ERROR HY000: Incorrect usage of PARTITION and log table
 ALTER TABLE general_log ENGINE = CSV;
 SET GLOBAL general_log = default;
+use test;
+create table t2 (b int);
+create table t1 (b int)
+PARTITION BY RANGE (t2.b) (
+PARTITION p1 VALUES LESS THAN (10),
+PARTITION p2 VALUES LESS THAN (20)
+) select * from t2;
+ERROR 42S22: Unknown column 't2.b' in 'partition function'
+create table t1 (a int)
+PARTITION BY RANGE (b) (
+PARTITION p1 VALUES LESS THAN (10),
+PARTITION p2 VALUES LESS THAN (20)
+) select * from t2;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (b) (PARTITION p1 VALUES LESS THAN (10) ENGINE = MyISAM, PARTITION p2 VALUES LESS THAN (20) ENGINE = MyISAM) */
+drop table t1, t2;
 End of 5.1 tests