Cleaned up SQL code in the test.
Needed to move the FLUSH TABLES statement prior to the DROP TABLE t1 to prevent a warning of
Table open on delete and a test fail.
Bug#38435 - LONG Microseconds cause MySQL to fail a CAST to DATETIME or DATE
Parsing of optional microsecond part in datetime did not
fail gracefully when field width was larger than the allowed
six places.
Now handles up to the correct six places, and disregards
any extra digits without messing up what we've already got.
testcase checks are made.
MTR spawns mysqltest to run check-testcase test before and after each testcase
it runs. It can also run check-warnings using mysqltest. Since it happened on PB
that these checks hanged, this patch provides additional feedback to help
investigating such failures:
- mysqltest is modified to give feedback about main steps in execution of a
testcase if run in verbose mode (including connection to the server),
- MTR is modified to run mysqltest in verbose mode when doing check-testcase or
check-warnings. The diagnostic output from mysqltest is preserved so that it is
saved upon test failure.
- Since we are only using the auto cleanup in one place of mtr.pl today, disable the
autocleanup and write our own END handler that clean up the tmpdir only when the process
that created it exits.
- output callstacks from crash using cdb debugger which is part
of "Debugging Tools for Windows". Output other interesting
information - function parameters, possibly source code fragment
and other goodies of "!analyze" cdb extension.
Additional fix:
1. Revert the unification of DROP FUNCTION
and DROP PROCEDURE, because DROP FUNCTION can be used to
drop UDFs (that have a non-qualified name and don't require
database name to be present and valid).
2. Fixed the case sensitivity problem by adding a call to
check_db_name() (similar to the sp_name production).
A Query in the MyISAM merge table was crashing
if the index merge algorithm was being used
Index Merge optimization requires the reading of
multiple indexes at the same time. Reading multiple
indexes at once with current SE API means that we
need to have handler instance for each to-be-read
index. This is done by creating clones of the handlers
instances. The clone internally does a open of the handler.
The open for a MERGE engine is handled in the following
phases
1) open parent table
2) generate list of underlying
table
3) attach underlying tables
But the current implementation does only the first
phase (i.e.) open parent table.
The current patch fixes this at the MERGE engine level,
by handling the clone operation within the MERGE engine
rather than in the storage engine API. It opens and
attaches the MyISAM tables on the MyISAM storage engine
interface directly within the MERGE engine. The new MyISAM
table instances, as well as the MERGE clone itself, are not
visible in the table cache. This is not a problem because
all locking is handled by the original MERGE table from which
this is cloned of.
