- When returning metadata for scalar subqueries the actual type of the
column was calculated based on the value type, which limits the actual
type of a scalar subselect to the set of (currently) 3 basic types :
integer, double precision or string. This is the reason that columns
of types other then the basic ones (e.g. date/time) are reported as
being of the corresponding basic type.
Fixed by storing/returning information for the column type in addition
to the result type.
mysql-test/r/subselect.result:
Bug #11032: getObject() returns a String for a sub-query of type datetime
- test case
mysql-test/t/subselect.test:
Bug #11032: getObject() returns a String for a sub-query of type datetime
- test case
sql/item_subselect.cc:
Bug #11032: getObject() returns a String for a sub-query of type datetime
- store and return the field type as well in addition to result type for
single row subqueries
sql/item_subselect.h:
Bug #11032: getObject() returns a String for a sub-query of type datetime
- store and return the field type as well in addition to result type for
single row subqueries
include/my_time.h:
we need to use it outside the my_time.cc
mysql-test/r/gis-rtree.result:
result fixed
sql-common/my_time.c:
'static' removed
sql/field.cc:
checks for invalid datetimes added
The parser is allocating Item_field for references by name in ORDER BY
expressions. Such expressions however may point not only to Item_field
in the select list (or to a table column) but also to an arbitrary Item.
This causes Item_field::fix_fields to throw an error about missing
column.
The fix substitutes Item_field for the reference with an Item_ref when
not pointing to Item_field.
mysql-test/r/order_by.result:
Bug #22457: Column alias in ORDER BY works, but not if in an expression
- test case
mysql-test/t/order_by.test:
Bug #22457: Column alias in ORDER BY works, but not if in an expression
- test case
sql/item.cc:
Bug #22457: Column alias in ORDER BY works, but not if in an expression
- transform the Item_field made by the parser into Item_ref if it
doesn't point to Item_field and it is in allowed context
into rurik.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug21727
mysql-test/r/subselect.result:
Auto merged
mysql-test/t/subselect.test:
Auto merged
sql/filesort.cc:
Auto merged
sql/item_subselect.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/records.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/table.cc:
Auto merged
into mysql.com:/home/hf/work/mysql-5.0.19491
sql/field.cc:
Auto merged
sql/field.h:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_timefunc.cc:
Auto merged
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Allocation of memory for the sort buffer at each evaluation of a
subquery may take a significant amount of time if the buffer is rather big.
With the fix we allocate the buffer at the first evaluation of the
subquery and reuse it at each subsequent evaluation.
mysql-test/r/subselect.result:
Added a test case for bug #21727.
mysql-test/t/subselect.test:
Added a test case for bug #21727.
sql/item_subselect.h:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Added an implementation for Item_subselect::is_uncacheable()
returning TRUE if the engine if the subselect is uncacheable.
sql/mysql_priv.h:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Added a new boolean parameter to the filesort_free_buffers procedure.
If the value of this parameter is TRUE the procedure frees the sort_keys
buffpek buffers.
sql/records.cc:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Added a new boolean parameter to the filesort_free_buffers procedure.
If the value of this parameter is TRUE the procedure frees the sort_keys
buffpek buffers.
sql/sql_base.cc:
Fixed bug #21727.
Made sure that st_table::pos_in_table_list would be always initialized.
sql/sql_select.cc:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Added a new boolean parameter to the filesort_free_buffers procedure.
If the value of this parameter is TRUE the procedure frees the sort_keys
buffpek buffers.
sql/sql_show.cc:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Added a new boolean parameter to the filesort_free_buffers procedure.
If the value of this parameter is TRUE the procedure frees the sort_keys
buffpek buffers.
sql/sql_table.cc:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Cleanup.
sql/table.cc:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Added st_table_list::in_subselect() returning for a table the subselect that
contains the FROM list this table is taken from (if there is any).
sql/table.h:
Fixed bug #21727.
This is a performance issue for queries with subqueries evaluation
of which requires filesort.
Added fields for sort_keys and buffpek buffers to the FILESORT_INFO structure.
Evaluate "NULL IN (SELECT ...)" in a special way: Disable pushed-down
conditions and their "consequences":
= Do full table scans instead of unique_[index_subquery] lookups.
= Change appropriate "ref_or_null" accesses to full table scans in
subquery's joins.
Also cache value of NULL IN (SELECT ...) if the SELECT is not correlated
wrt any upper select.
mysql-test/r/subselect.result:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Updated test results
sql/item.h:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Added comments
sql/item_cmpfunc.cc:
BUG#8804: wrong results for NULL IN (SELECT ...):
Made Item_in_optimizer to:
- cache the value of "NULL IN (uncorrelated select)"
- Turn off pushed-down predicates when evaluating "NULL IN (SELECT ...)"
sql/item_cmpfunc.h:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Made Item_in_optimizer cache the value of "NULL IN (uncorrelated select)"
- Added comments
sql/item_subselect.cc:
BUG#8804: wrong results for NULL IN (SELECT ...):
- When needed, wrap the predicates we push into subquery into an
Item_func_trig_cond so we're able to turn them off when evaluating
NULL IN (SELECT ...).
- Added code to evaluate NULL IN (SELECT ...) in a special way:
= In [unique_]index_subquery, do full table scan to see if there
are any rows.
= For other subqueries, change ref[_or_null] to ALL if the
ref[_or_null] was created from pushed-down predicate.
sql/item_subselect.h:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Added Item_subselect::is_correlated
- Added comments
sql/records.cc:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Make rr_sequential() non-static
sql/sql_lex.cc:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Added st_select_lex::is_correlated and Item_subselect::is_correlated.
sql/sql_lex.h:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Added st_select_lex::is_correlated
sql/sql_select.cc:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Added KEY_FIELD::outer_ref to keep track of which ref accesses are
created from predicates that were pushed down into the subquery.
sql/sql_select.h:
BUG#8804: wrong results for NULL IN (SELECT ...):
- Added KEYUSE::outer_ref
mysql-test/r/subselect3.result:
New BitKeeper file ``mysql-test/r/subselect3.result''
mysql-test/t/subselect3.test:
New BitKeeper file ``mysql-test/t/subselect3.test''
into rakia.gmz:/home/kgeorge/mysql/autopush/B21809-5.0-opt
sql/item.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_func.h:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
Item::val_xxx() may be called by the server several times at execute time
for a single query. Calls to val_xxx() may be very expensive and sometimes
(count(distinct), sum(distinct), avg(distinct)) not possible.
To avoid that problem the results of calculation for these aggregate
functions are cached so that val_xxx() methods just return the calculated
value for the second and subsequent calls.
mysql-test/r/func_group.result:
Bug #23184: SELECT causes server crash
- test case
mysql-test/t/func_group.test:
Bug #23184: SELECT causes server crash
- test case
sql/item_sum.cc:
Bug #23184: SELECT causes server crash
- caching of the aggregate function results so no need to recalculate at val_xxx()
sql/item_sum.h:
Bug #23184: SELECT causes server crash
- caching of the aggregate function results so no need to recalculate at val_xxx()
select OK.
The SQL parser was using Item::name to transfer user defined function attributes
to the user defined function (udf). It was not distinguishing between user defined
function call arguments and stored procedure call arguments. Setting Item::name
was causing Item_ref::print() method to print the argument as quoted identifiers
and caused views that reference aggregate functions as udf call arguments (and
rely on Item::print() for the text of the view to store) to throw an undefined
identifier error.
Overloaded Item_ref::print to print aggregate functions as such when printing
the references to aggregate functions taken out of context by split_sum_func2()
Fixed the parser to properly detect using AS clause in stored procedure arguments
as an error.
Fixed printing the arguments of udf call to print properly the udf attribute.
mysql-test/r/udf.result:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- test cases
mysql-test/t/udf.test:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- test cases
sql/item.cc:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- Don't print the refs to SUM functions as refs.
sql/item_func.cc:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- print the aliases in the udf calls
sql/item_func.h:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- print the aliases in the udf calls
sql/sql_lex.cc:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- disable aliases for arguments in stored routine calls
sql/sql_lex.h:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- disable aliases for arguments in stored routine calls
sql/sql_yacc.yy:
Bug #21809: Error 1356 while selecting from view with grouping though underlying
select OK.
- disable aliases for arguments in stored routine calls
- fix bison duplicate symbol warnings
the incompatibility was caused by current_stmt member added to the MYSQL
structure.
It's possible to move it to THD structure instead which saves ABI
include/mysql.h:
member moved to the THD structure
libmysqld/lib_sql.cc:
now we use THD member here
sql/sql_class.h:
current_stmt member added for the embedded server
into dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt
mysql-test/r/myisam.result:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_select.cc:
Auto merged
If elements a not top-level IN subquery were accessed by an index and
the subquery result set included a NULL value then the quantified
predicate that contained the subquery was evaluated to NULL when
it should return a non-null value.
mysql-test/r/subselect.result:
Added a test case for bug #23478.
mysql-test/t/subselect.test:
Added a test case for bug #23478.
into dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt
mysql-test/r/merge.result:
Auto merged
mysql-test/r/myisam.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/r/view.result:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/opt_range.cc:
Auto merged
sql/opt_range.h:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql/table.cc:
Auto merged
Backport from 5.1.
Raised STACK_MIN_SIZE for Debian GNU/Linux Sid,
Linux kernel 2.6.16,
gcc version 3.3.6 (Debian 1:3.3.6-13),
libc6-dbg 2.3.6.ds1-4,
Pentium4 (x86),
BUILD/compile-pentium-debug-max
Raised about 100 Bytes above the required minimum.
into rurik.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug19579
mysql-test/t/select.test:
Auto merged
sql/sql_select.cc:
Auto merged
mysql-test/r/select.result:
SCCS merged
into macbook.gmz:/Users/kgeorge/mysql/work/B21798-5.0-opt-merge
sql/mysql_priv.h:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
mysql-test/r/subselect.result:
merge fixes for bug 21798
mysql-test/t/subselect.test:
merge fixes for bug 21798
list using a function
When executing dependent subqueries they are re-inited and re-exec() for
each row of the outer context.
The cause for the bug is that during subquery reinitialization/re-execution,
the optimizer reallocates JOIN::join_tab, JOIN::table in make_simple_join()
and the local variable in 'sortorder' in create_sort_index(), which is
allocated by make_unireg_sortorder().
Care must be taken not to allocate anything into the thread's memory pool
while re-initializing query plan structures between subquery re-executions.
All such items mush be cached and reused because the thread's memory pool
is freed at the end of the whole query.
Note that they must be cached and reused even for queries that are not
otherwise cacheable because otherwise it will grow the thread's memory
pool every time a cacheable query is re-executed.
We provide additional members to the JOIN structure to store references
to the items that need to be cached.
mysql-test/r/subselect.result:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- test case
mysql-test/t/subselect.test:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- test case
sql/mysql_priv.h:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- cache the entities allocated in the threads memory pool by
JOIN::exec ().
sql/sql_delete.cc:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- cache the SORT_ORDER, TABLE * and JOIN_TAB allocated in the thread's
memory pool by JOIN::exec ().
sql/sql_select.cc:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- cache the SORT_ORDER, TABLE * and JOIN_TAB allocated in the thread's
memory pool by JOIN::exec ().
sql/sql_select.h:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- cache the SORT_ORDER, TABLE * and JOIN_TAB allocated in the thread's
memory pool by JOIN::exec ().
sql/sql_table.cc:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- cache the SORT_ORDER, TABLE * and JOIN_TAB allocated in the thread's
memory pool by JOIN::exec ().
sql/sql_update.cc:
Bug#21798: memory leak during query execution with subquery in column
list using a function
- cache the SORT_ORDER, TABLE * and JOIN_TAB allocated in the thread's
memory pool by JOIN::exec ().
account predicates that become sargable after reading const tables.
In some cases this resulted in choosing non-optimal execution plans.
Now info of such potentially saragable predicates is saved in
an array and after reading const tables we check whether this
predicates has become saragable.
mysql-test/r/select.result:
Added a test case for bug #19579.
mysql-test/t/select.test:
Added a test case for bug #19579.
sql/item_cmpfunc.cc:
Fixed bug #19579: at range analysis optimizer did not take into
account predicates that become sargable after reading const tables.
Added a counter of between predicates.
sql/sql_base.cc:
Fixed bug #19579: at range analysis optimizer did not take into
account predicates that become sargable after reading const tables.
Added a counter of between predicates.
sql/sql_lex.cc:
Fixed bug #19579: at range analysis optimizer did not take into
account predicates that become sargable after reading const tables.
Added a counter of between predicates.
sql/sql_lex.h:
Fixed bug #19579: at range analysis optimizer did not take into
account predicates that become sargable after reading const tables.
Added a counter of between predicates.
sql/sql_select.cc:
Fixed bug #19579: at range analysis optimizer did not take into
account predicates that become sargable after reading const tables.
Now info of such potentially saragable predicates is saved in
an array and after reading const tables we check whether this
predicates has become saragable.
