Change error code to HA_ERR_ROW_IS_REFERENCED if we cannot DROP a parent table referenced by a FOREIGN KEY constraint; this error number is less misleading than the previous value HA_ERR_CANNOT_ADD_FOREIGN, but misleading still; we should introduce to 5.0 a proper MySQL error code
- 'ps_10nestset' uses a "nested set" approach for an employee
hierarchy, then does arithmetic on the "salary" field;
(soon) to be extended by inserts / deletes which imply
mass updates on the "l"/"r" fields showing the set inclusion,
- 'ps_11bugs' will get (some of ?) those bug DB entries which
refer to prepared statements, but whose number does not appear
in a test file comment - so it will also be extended.
A fix for Bug#6042 "constants propogation works olny once (prepared
statements)": reset item->marker in Item::cleanup, as it's used
in propogate_cond_constants. No test case as the only way I could
come up with to show the problem is EXPLAIN, and EXPLAIN is painful
to use in the test suite.
when one connection had done FLUSH TABLES WITH READ LOCK, some updates, and then COMMIT,
it was accepted but my_error() was called and so, while client got no error, error was logged in binlog.
We now don't call my_error() in this case; we assume the connection know what it does.
This problem was specific to 4.0.21. The change is needed to make replication work with existing versions of innobackup.
added blob to test to see that blob tables don't show up in show tables
auto increment setting need not fetch blob tables (will otherwise generate error during table creation)
moved addBlobTables out of fetchGlobalTableImpl to get_local_table_info
changed addBlobTables to start from last column and break if all blobs added
also addBlobTables will return -1 if failed (typically getTable)
changed to using get_local_table_info with internal table name where applicable for efficiency
added option to get_local_table_info wether to fetch blob tables or not
getTable always fetches the blobtables
moved addBlobTables to get_local_table_info to always be called, even if main table goes to cache only
(Bug #4315: GROUP_CONCAT with ORDER BY returns strange results for TEXT fields
Bug #5564: Strange behaviour with group_concat and distinct
Bug #5970: group_concat doesn't print warnings)
crashes server (prepared statements)": the bug was that all boolean
items always recovered its original arguments at statement cleanup
stage.
This collided with Item_subselect::select_transformer, which tries to
permanently change the item tree to use a transformed subselect instead of
original one.
So we had this call sequence for prepare:
mysql_stmt_prepare -> JOIN::prepare ->
Item_subselect::fix_fields -> the item tree gets transformed ->
Item_bool_rowready_func2::cleanup, item tree is recovered to original
state, while it shouldn't have been;
mysql_stmt_execute -> attempts to execute a broken tree -> crash.
Now instead of bluntly recovering all arguments of bool functions in
Item_bool_rowready_func2::cleanup, we recover only those
which were changed, and do it in one place.
There still would exist a possibility for a collision with subselect
tranformation, if permanent and temporary changes were performed at the
same stage.
But fortunately subselect transformation is always done first, so it
doesn't conflict with the optimization done by propogate_cond_constants.
Now we have:
mysql_stmt_prepare -> JOIN::prepare -> subselect transformation
permanently changes the tree -> cleanup doesn't recover anything,
because nothing was registered for recovery.
mysql_stmt_execute -> JOIN::prepare (the tree is already transformed,
so it doesn't change), JOIN::optimize ->
propogate_cond_constants -> temporary changes the item tree
with constants -> JOIN::execute -> cleanup ->
the changes done by propogate_cond_constants are recovered, as
they were registered for recovery.
Fix bug #5960: if one updated a column so that its size changed, or updated it to an externally stored (TEXT or BLOB) value, then ANOTHER externally stored column would show up as 512 bytes of good data + 20 bytes of garbage in a consistent read that fetched the old version of the row
- Made some of the warnings under --verbose only
- Added possibility to add mysqladmin= under groups [mysqldN]
mysqladmin=... is no longer mandatory under [mysqld_multi]
- Made 'start', 'stop' and 'report' commands truly case-insensitive
- Some other common places code merge and cleanup
