This assumption in Item_cache_datetime::cache_value_int
was wrong:
- /* Assume here that the underlying item will do correct conversion.*/
- int_value= example->val_int_result();
mysql-test/r/subselect_innodb.result:
New test case.
mysql-test/t/subselect_innodb.test:
New test case.
sql/item.cc:
In Item_cache_datetime::cache_value_int()
- call get_time() or get_date() depending on desired type
- convert the returned MYSQL_TIME value to longlong depending on desired type
sql/item.h:
The cached int_value in Item_cache_datetime should not be unsigned:
- it is used mostly in signed context
- it can actually have negative value (for TIME data type)
sql/item_cmpfunc.cc:
Add comment on Bug#59685
sql/item_subselect.cc:
Add some DBUG_TRACE for easier bug-hunting.
This assumption in Item_cache_datetime::cache_value_int
was wrong:
- /* Assume here that the underlying item will do correct conversion.*/
- int_value= example->val_int_result();
The patch fixed the following optimizer defect: when performing
substitution for best equal fields into where conditions to be
able to do their evaluations as soon as possible the optimizer
skipped conditions over views. That could lead to suboptimal
execution of queries that used views.
Slightly changed the test case to demonstrate the performance
improvements if this fix.
sql/item.cc:
Wrapper added.
sql/item.h:
Wrapper added.
sql/mysql_priv.h:
Wrap function added.
sql/sql_base.cc:
Wrap function added.
Fix of problem with WHERE consist of alone outer reference field by wrapping it.
sql/sql_select.cc:
Fix of problem with HAVING consist of alone outer reference field by wrapping it.
get_year_value() contains code to convert 2-digits year to
4-digits. The fix for Bug#49910 added a check on the size of
the underlying field so that this conversion is not done for
YEAR(4) values. (Since otherwise one would convert invalid
YEAR(4) values to valid ones.)
The existing check does not work when Item_cache is used, since
it is not detected when the cache is based on a Field. The
reported change in behavior is due to Bug#58030 which added
extra cached items in min/max computations.
The elegant solution would be to implement
Item_cache::real_item() to return the underlying Item.
However, some side effects are observed (change in explain
output) that indicates that such a change is not straight-
forward, and definitely not appropriate for an MRU.
Instead, a Item_cache::field() method has been added in order
to get access to the underlying field. (This field() method
eliminates the need for Item_cache::eq_def() used in
test_if_ref(), but in order to limit the scope of this fix,
that code has been left as is.)
mysql-test/r/type_year.result:
Added test case for Bug#59211.
mysql-test/t/type_year.test:
Added test case for Bug#59211.
sql/item.h:
Added function Item_cache::field() to get access to the
underlying Field of a cached field Value.
sql/item_cmpfunc.cc:
Also check underlying fields of Item_cache, not just Item_Field,
when checking whether the value is of type YEAR(4) or not.
get_year_value() contains code to convert 2-digits year to
4-digits. The fix for Bug#49910 added a check on the size of
the underlying field so that this conversion is not done for
YEAR(4) values. (Since otherwise one would convert invalid
YEAR(4) values to valid ones.)
The existing check does not work when Item_cache is used, since
it is not detected when the cache is based on a Field. The
reported change in behavior is due to Bug#58030 which added
extra cached items in min/max computations.
The elegant solution would be to implement
Item_cache::real_item() to return the underlying Item.
However, some side effects are observed (change in explain
output) that indicates that such a change is not straight-
forward, and definitely not appropriate for an MRU.
Instead, a Item_cache::field() method has been added in order
to get access to the underlying field. (This field() method
eliminates the need for Item_cache::eq_def() used in
test_if_ref(), but in order to limit the scope of this fix,
that code has been left as is.)
Truncate the maximum result length (64-bit wide type) to fit into
the item maximum length (32-bit wide type). This is possible as
this specific branch is only used if the maximum result length
is less than 0x1000000 (MAX_BLOB_WIDTH), which fits comfortably
in a 32-bit wide type.
Truncate the maximum result length (64-bit wide type) to fit into
the item maximum length (32-bit wide type). This is possible as
this specific branch is only used if the maximum result length
is less than 0x1000000 (MAX_BLOB_WIDTH), which fits comfortably
in a 32-bit wide type.
- Removed files specific to compiling on OS/2
- Removed files specific to SCO Unix packaging
- Removed "libmysqld/copyright", text is included in documentation
- Removed LaTeX headers for NDB Doxygen documentation
- Removed obsolete NDB files
- Removed "mkisofs" binaries
- Removed the "cvs2cl.pl" script
- Changed a few GPL texts to use "program" instead of "library"
- Removed files specific to compiling on OS/2
- Removed files specific to SCO Unix packaging
- Removed "libmysqld/copyright", text is included in documentation
- Removed LaTeX headers for NDB Doxygen documentation
- Removed obsolete NDB files
- Removed "mkisofs" binaries
- Removed the "cvs2cl.pl" script
- Changed a few GPL texts to use "program" instead of "library"
When the optimizer creates items out of other items it does
not have to call the fix_fields method. Usually in these
cases it calls quick_fix_field() that just marks the
created item as fixed. If the created item is an Item_func
object then calling quick_fix_field() works fine if the
arguments of the created functional item are already fixed.
Otherwise some unfixed nodes remain in the item tree and
it triggers an assertion failure whenever the item is
evaluated.
Fixed the problem by making the method quick_fix_field
virtual and providing an implementation for the class
Item_func objects that recursively calls the method
for unfixed arguments of any functional item.
multiline inserts into partition
Bug#57071: EXTRACT(WEEK from date_col) cannot be
allowed as partitioning function
Renamed function according to reviewers comments.
sql/item.h:
better name of processor function
sql/item_func.h:
better name of processor function
sql/item_timefunc.h:
better name of processor function
sql/sql_partition.cc:
better name of processor function
Updated comment.
multiline inserts into partition
Bug#57071: EXTRACT(WEEK from date_col) cannot be
allowed as partitioning function
Renamed function according to reviewers comments.
Bug#57071: EXTRACT(WEEK from date_col) cannot be allowed as partitioning function
There were functions allowed as partitioning functions
that implicit allowed cast. That could result in unacceptable
behaviour.
Solution was to check that the arguments of date and time functions
have allowed types (field and date/datetime/time depending on function).
mysql-test/r/partition.result:
Updated result
mysql-test/r/partition_error.result:
Updated result
mysql-test/suite/parts/inc/part_supported_sql_funcs_main.inc:
disabled test with not allowed arguments.
mysql-test/suite/parts/r/part_supported_sql_func_innodb.result:
Updated result
mysql-test/suite/parts/r/part_supported_sql_func_myisam.result:
Updated result
mysql-test/t/partition.test:
Fixed typo in bug number and removed non allowed function (bad argument)
mysql-test/t/partition_error.test:
Added tests to verify correct type of argument.
sql/item.h:
Renamed processor since it is no longer only for timezone
sql/item_func.h:
Added help functions for checking date/time/datetime arguments.
sql/item_timefunc.h:
Added processors for argument correctness
sql/sql_partition.cc:
renamed the processor for checking arguments.
Bug#57071: EXTRACT(WEEK from date_col) cannot be allowed as partitioning function
There were functions allowed as partitioning functions
that implicit allowed cast. That could result in unacceptable
behaviour.
Solution was to check that the arguments of date and time functions
have allowed types (field and date/datetime/time depending on function).
- Fixed problem with oqgraph and 'make dist'
Note that after this merge we have a problem show in join_outer where we examine too many rows in one specific case (related to BUG#57024).
This will be fixed when mwl#128 is merged into 5.3.
NAME_CONST(..) was used wrongly in a HAVING clause, and
should have caused a user error. Instead, it caused a
segmentation fault.
During parsing, the value parameter to NAME_CONST was
specified to be an uninitialized Item_ref object (it
would be resolved later). During the semantic analysis,
the object is tested, and since it was not initialied,
the server seg.faulted.
The fix is to check if the object is initialized
before testing it. The same pattern has already been
applied to most other methods in the Item_ref class.
Bug was introduced by the optimization done as part of
Bug#33546.
NAME_CONST(..) was used wrongly in a HAVING clause, and
should have caused a user error. Instead, it caused a
segmentation fault.
During parsing, the value parameter to NAME_CONST was
specified to be an uninitialized Item_ref object (it
would be resolved later). During the semantic analysis,
the object is tested, and since it was not initialied,
the server seg.faulted.
The fix is to check if the object is initialized
before testing it. The same pattern has already been
applied to most other methods in the Item_ref class.
Bug was introduced by the optimization done as part of
Bug#33546.
