Problem #1: INSERT...SELECT
INSERT ... SELECT with the same table on both sides (hidden
below a MERGE table) does now work by buffering the select result.
The duplicate detection works now after open_and_lock_tables()
on the locks.
I did not find a test case that failed without the change in
sql_update.cc. I made the change anyway as it should in theory
fix a possible MERGE table problem with multi-table update.
mysql-test/r/create.result:
BUG#5390 - problems with merge tables
Removed a duplicate test.
mysql-test/r/merge.result:
BUG#5390 - problems with merge tables
Problem #1: INSERT...SELECT
Added test results.
mysql-test/t/create.test:
BUG#5390 - problems with merge tables
Removed a duplicate test.
mysql-test/t/merge.test:
BUG#5390 - problems with merge tables
Problem #1: INSERT...SELECT
Added tests.
sql/lock.cc:
BUG#5390 - problems with merge tables
Problem #1: INSERT...SELECT
Added a new function to find a duplicate lock in a list of tables.
sql/mysql_priv.h:
BUG#5390 - problems with merge tables
Problem #1: INSERT...SELECT
Added a declaration for the new function.
sql/sql_parse.cc:
BUG#5390 - problems with merge tables
Problem #1: INSERT...SELECT
Changed the duplicate tables detection for INSERT ... SELECT
to use the new function, which does also work for MERGE tables.
sql/sql_update.cc:
BUG#5390 - problems with merge tables
Changed the duplicate tables detection for UPDATE
to use the new function, which does also work for MERGE tables.
38b7ede9c6