makedate() will fold years below 100 into the 1970-2069 range. CS removes code
that also wrongly folded years between 100 and 200 into that range, which should
be left unchanged. Backport from 5.1.
Before this patch, failures to write to the log tables (mysql.slow_log
and mysql.general_log) were improperly printed (the time was printed twice),
or not printed at all.
With this patch, failures to write to the log tables is reported in the
error log, for all cases of failures.
"DECLARE CURSOR FOR SHOW ..." is a syntax that currently appears to work,
but is untested for some SHOW commands and does not work for other SHOW
commands.
Since this is an un-intended feature that leaked as a result of a coding bug
(in the parser grammar), the correct fix is to fix the grammar to not accept
this construct.
In other words, "DECLARE CURSOR FOR SHOW <other commands that don't work>"
is not considered a bug, and we will not implement other features to make all
the SHOW commands usable inside a cursor just because someone exploited a bug.
Problem: GROUP_CONCAT(DISTINCT BIT_FIELD...) uses a tree to store keys;
which are constructed using a temporary table fields,
see Item_func_group_concat::setup().
As a) we don't store null bits in the tree where the bit fields store parts
of their data and b) there's no method to properly compare two table records
we've got problem.
Fix: convert BIT fields to INT in the temporary table used.
Bug#30982 CHAR(..USING..) can return a not-well-formed string
Bug#30986 Character set introducer followed by a HEX string can return bad result
check_well_formed_result moved to Item from Item_str_func
fixed Item_func_char::val_str for proper ucs symbols converting
added check for well formed strings for correct conversion of constants with underscore
charset
myisam_sort_buffer_size.
An incorrect length of the sort buffer was used when calculating the
maximum number of keys. When myisam_sort_buffer_size is small enough,
this could result in the number of keys < number of
BUFFPEK structures which in turn led to use of uninitialized BUFFPEKs.
Fixed by correcting the buffer length calculation.
The special case with NULL as a regular expression
was handled at prepare time. But in this special case
the item was not marked as fixed. This caused an assertion
at execution time.
Fixed my marking the item as fixed even when known to
return NULL at prepare time.
precision > 0 && scale <= precision'.
A sign of a resulting item of the IFNULL function was not
updated and the maximal length of this result was calculated
improperly. Correct algorithm was copy&pasted from the IF
function implementation.
Fixed the usage of spatial data (and Point in specific) with
non-spatial indexes.
Several problems :
- The length of the Point class was not updated to include the
spatial reference system identifier. Fixed by increasing with 4
bytes.
- The storage length of the spatial columns was not accounting for
the length that is prepended to it. Fixed by treating the
spatial data columns as blobs (and thus increasing the storage
length)
- When creating the key image for comparison in index read wrong
key image was created (the one needed for and r-tree search,
not the one for b-tree/other search). Fixed by treating the
spatial data columns as blobs (and creating the correct kind of
image based on the index type).
Bug#29816 Syntactically wrong query fails with misleading error message
The core problem is that an SQL-invoked function name can be a <schema
qualified routine name> that contains no <schema name>, but the mysql
parser insists that all stored procedures (function, procedures and
triggers) must have a <schema name>, which is not true for functions.
This problem is especially visible when trying to create a function
or when a query contains a syntax error after a function call (in the
same query), both will fail with a "No database selected" message if
the session is not attached to a particular schema, but the first
one should succeed and the second fail with a "syntax error" message.
Part of the fix is to revamp the sp name handling so that a schema
name may be omitted for functions -- this means that the internal
function name representation may not have a dot, which represents
that the function doesn't have a schema name. The other part is
to place schema checks after the type (function, trigger or procedure)
of the routine is known.
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.
Even though it returns NULL, the MAKETIME function did not have this property set,
causing a failed assertion (designed to catch exactly this).
Fixed by setting the nullability property of MAKETIME().
