into macbook.gmz:/Users/kgeorge/mysql/work/B21180-4.1-opt
mysql-test/r/subselect.result:
merge of 4.1-opt
mysql-test/t/subselect.test:
merge of 4.1-opt
sql/opt_range.h:
merge of 4.1-opt
wrong results
Mark the containing Item(s) (Item_subselect descendant usually) of
a subselect as containing aggregate functions if it has references
to aggregates functions that are calculated outside its context.
This tels end_send_group() not to make an Item_subselect descendant in
select list a copy and causes the correct value being returned.
mysql-test/r/func_group.result:
Bug #21540: Subqueries with no from and aggregate functions return
wrong results
- test cases
mysql-test/r/subselect.result:
Bug #21540: Subqueries with no from and aggregate functions return
wrong results
- fixed the result of an existing testcase.
mysql-test/t/subselect.test:
Bug #21540: Subqueries with no from and aggregate functions return
wrong results
- test cases
sql/item_sum.cc:
Bug #21540: Subqueries with no from and aggregate functions return
wrong results
Mark the containing Item (Item_subselect descendant usually) of
a subselect as containing aggregate functions if it has references
to aggregates functions that are calculated outside its context.
This tels end_send_group() not to make an Item_subselect descendant in
select list a copy and causes the correct value being returned.
into macbook.gmz:/Users/kgeorge/mysql/work/B16792-5.0-opt
mysql-test/r/func_gconcat.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
sql/opt_sum.cc:
Auto merged
mysql-test/r/func_group.result:
merge 4.1->5.0 for bug #16792
mysql-test/t/func_group.test:
merge 4.1->5.0 for bug #16792
sql/sql_select.cc:
merge 4.1->5.0 for bug #16792
into rakia.(none):/home/kgeorge/mysql/autopush/B14654-5.0-opt
mysql-test/r/subselect.result:
Auto merged
mysql-test/t/subselect.test:
Auto merged
sql/sql_yacc.yy:
Auto merged
Made the parser to support parenthesis around UNION branches.
This is done by amending the rules of the parser so it generates the correct
structure.
Currently it supports arbitrary subquery/join/parenthesis operations in the
EXISTS clause.
In the IN/scalar subquery case it will allow adding nested parenthesis only
if there is an UNION clause after the parenthesis. Otherwise it will just
treat the multiple nested parenthesis as a scalar expression.
It adds extra lex level for ((SELECT ...) UNION ...) to accommodate for the
UNION clause.
mysql-test/r/subselect.result:
Bug#14654 : Cannot select from the same table twice within a UNION statement
- test cases
mysql-test/t/subselect.test:
Bug#14654 : Cannot select from the same table twice within a UNION statement
- test cases
sql/sql_yacc.yy:
Bug#14654 : Cannot select from the same table twice within a UNION statement
- shuffle around the rules for the parenthesis in subselect
into moonbone.local:/work/tmp_merge-5.1-opt-mysql
BUILD/check-cpu:
Auto merged
include/config-netware.h:
Auto merged
mysql-test/r/func_time.result:
Auto merged
mysql-test/r/group_by.result:
Auto merged
mysql-test/r/join_outer.result:
Auto merged
mysql-test/r/ndb_condition_pushdown.result:
Auto merged
mysql-test/r/range.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/type_datetime.result:
Auto merged
mysql-test/r/user_var.result:
Auto merged
mysql-test/r/view.result:
Auto merged
mysql-test/t/func_time.test:
Auto merged
mysql-test/t/range.test:
Auto merged
mysql-test/t/select.test:
Auto merged
mysql-test/t/type_datetime.test:
Auto merged
mysql-test/t/view.test:
Auto merged
sql/ha_innodb.cc:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_func.h:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_timefunc.cc:
Auto merged
sql/opt_range.h:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_acl.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_update.cc:
Auto merged
storage/innobase/btr/btr0btr.c:
Auto merged
storage/innobase/buf/buf0buf.c:
Auto merged
storage/innobase/dict/dict0dict.c:
Auto merged
storage/innobase/fil/fil0fil.c:
Auto merged
storage/innobase/fsp/fsp0fsp.c:
Auto merged
storage/innobase/include/buf0buf.ic:
Auto merged
storage/innobase/log/log0log.c:
Auto merged
storage/innobase/log/log0recv.c:
Auto merged
storage/innobase/os/os0file.c:
Auto merged
storage/innobase/row/row0sel.c:
Auto merged
storage/innobase/srv/srv0start.c:
Auto merged
storage/innobase/ut/ut0dbg.c:
Auto merged
tests/mysql_client_test.c:
Auto merged
client/mysqltest.c:
Manual merge
mysql-test/r/innodb_mysql.result:
Manual merge
mysql-test/t/innodb_mysql.test:
Manual merge
mysql-test/t/join_outer.test:
Manual merge
sql/item_cmpfunc.cc:
Manual merge
sql/mysql_priv.h:
Manual merge
sql/opt_range.cc:
Manual merge
sql/sql_base.cc:
Manual merge
storage/innobase/include/btr0cur.ic:
Manual merge
storage/innobase/row/row0mysql.c:
Manual merge
Must not use Item_direct_ref in HAVING because it points to
the new value (witch is not yet calculated for the first row).
mysql-test/r/subselect.result:
Bug #16255: Subquery in where
- test case
mysql-test/t/subselect.test:
Bug #16255: Subquery in where
- test case
sql/item_subselect.cc:
Bug #16255: Subquery in where
Must not use Item_direct_ref in HAVING because it points to
the new value (witch is not yet calculated for the first row).
Treat queries with no FROM and aggregate functions as normal queries,
so the aggregate function get correctly calculated as if there is 1 row.
This means that they will be considered to have one row, so COUNT(*) will return
1 instead of 0. Other aggregates will behave in compatible manner.
mysql-test/r/func_gconcat.result:
Bug #16792 query with subselect, join, and group not returning proper values
- test case. Note how it improves the support for DUAL.
mysql-test/r/func_group.result:
Bug #16792 query with subselect, join, and group not returning proper values
- test case. Note how it improves the support for DUAL.
mysql-test/r/subselect.result:
Bug #16792 query with subselect, join, and group not returning proper values
- consequence of (SELECT MAX(<const>)) now returning <const> instead of 0
mysql-test/t/func_group.test:
Bug #16792 query with subselect, join, and group not returning proper values
- test case.
sql/opt_sum.cc:
Bug #16792 query with subselect, join, and group not returning proper values
- cannot do the optimization if the index is already opened by (say) UPDATE
as it invloves opening reading and closing the index.
sql/sql_select.cc:
Bug #16792 query with subselect, join, and group not returning proper values
- Treat queries with no FROM and aggregate functions as normal queries,
so the aggregate function get correctly calculated as if there is 1 row.
Reseting subqueries with "quick" access methods was incomplete.
Partially backported the correct reseting of QUICK_SELECTs from 5.x.
mysql-test/r/subselect.result:
Bug #21180: Subselect with index for both WHERE and ORDER BY produces empty result
- test case
mysql-test/t/subselect.test:
Bug #21180: Subselect with index for both WHERE and ORDER BY produces empty result
- test case
sql/opt_range.cc:
Bug #21180: Subselect with index for both WHERE and ORDER BY produces empty result
- partially backported the correct reseting of QUICK_SELECTs from 5.x.
sql/opt_range.h:
Bug #21180: Subselect with index for both WHERE and ORDER BY produces empty result
- partially backported the correct reseting of QUICK_SELECTs from 5.x.
into sunlight.local:/local_work/tmp_merge-5.1-opt-mysql
mysql-test/r/auto_increment.result:
Auto merged
mysql-test/r/binlog_row_blackhole.result:
Auto merged
mysql-test/r/binlog_stm_blackhole.result:
Auto merged
mysql-test/r/date_formats.result:
Auto merged
mysql-test/r/func_compress.result:
Auto merged
mysql-test/r/func_gconcat.result:
Auto merged
mysql-test/r/func_group.result:
Auto merged
mysql-test/r/func_math.result:
Auto merged
mysql-test/r/func_str.result:
Auto merged
mysql-test/r/func_system.result:
Auto merged
mysql-test/r/func_time.result:
Auto merged
mysql-test/r/gis.result:
Auto merged
mysql-test/r/group_by.result:
Auto merged
mysql-test/r/group_min_max.result:
Auto merged
mysql-test/r/myisam.result:
Auto merged
mysql-test/r/olap.result:
Auto merged
mysql-test/r/partition_pruning.result:
Auto merged
mysql-test/r/query_cache.result:
Auto merged
mysql-test/r/rpl_get_lock.result:
Auto merged
mysql-test/r/rpl_master_pos_wait.result:
Auto merged
mysql-test/r/select.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/type_blob.result:
Auto merged
mysql-test/r/union.result:
Auto merged
mysql-test/r/variables.result:
Auto merged
mysql-test/r/view.result:
Auto merged
mysql-test/t/group_min_max.test:
Auto merged
mysql-test/t/partition_pruning.test:
Auto merged
sql/opt_range.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/table.h:
Auto merged
into sunlight.local:/local_work/tmp_merge-5.1-opt-mysql
client/mysql.cc:
Auto merged
mysql-test/r/date_formats.result:
Auto merged
mysql-test/r/func_gconcat.result:
Auto merged
mysql-test/r/func_group.result:
Auto merged
mysql-test/r/func_str.result:
Auto merged
mysql-test/r/group_min_max.result:
Auto merged
BitKeeper/deleted/.del-make_win_src_distribution.sh~f80d8fca44e4e5f1:
Auto merged
BitKeeper/deleted/.del-mysqld.dsp~ffdbf2d234e23e56:
Auto merged
BitKeeper/deleted/.del-mysqld_ia64.dsp~7f8cf84d81ee04e2:
Auto merged
BitKeeper/deleted/.del-mysqldump.dsp~a8bd23547d3fc27e:
Auto merged
BitKeeper/deleted/.del-mysqldump_ia64.dsp~a2aabe898be35b31:
Auto merged
mysql-test/r/innodb.result:
Auto merged
mysql-test/r/innodb_mysql.result:
Auto merged
mysql-test/r/ps_7ndb.result:
Auto merged
mysql-test/r/type_ranges.result:
Auto merged
mysql-test/r/udf.result:
Auto merged
mysql-test/r/union.result:
Auto merged
mysql-test/r/view.result:
Auto merged
mysql-test/t/date_formats.test:
Auto merged
mysql-test/t/func_gconcat.test:
Auto merged
mysql-test/t/func_group.test:
Auto merged
mysql-test/t/group_min_max.test:
Auto merged
mysql-test/t/innodb.test:
Auto merged
mysql-test/t/innodb_mysql.test:
Auto merged
mysql-test/t/mysql.test:
Auto merged
mysql-test/t/select.test:
Auto merged
mysql-test/t/sp.test:
Auto merged
mysql-test/t/view.test:
Auto merged
sql/field.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_func.h:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_subselect.h:
Auto merged
sql/opt_range.h:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
sql/time.cc:
Auto merged
storage/ndb/test/ndbapi/Makefile.am:
Auto merged
strings/decimal.c:
Auto merged
mysql-test/r/analyse.result:
Manual merge
mysql-test/r/bigint.result:
Manual merge
mysql-test/r/create.result:
Manual merge
mysql-test/r/information_schema.result:
Manual merge
mysql-test/r/ps_2myisam.result:
Manual merge
mysql-test/r/ps_3innodb.result:
Manual merge
mysql-test/r/ps_4heap.result:
Manual merge
mysql-test/r/ps_5merge.result:
Manual merge
mysql-test/r/ps_6bdb.result:
Manual merge
mysql-test/r/rpl_insert_id.result:
Manual merge
mysql-test/r/select.result:
Manual merge
mysql-test/r/sp.result:
Manual merge
mysql-test/r/subselect.result:
Manual merge
mysql-test/t/information_schema.test:
Manual merge
mysql-test/t/rpl_insert_id.test:
Manual merge
sql/field.h:
Manual merge
sql/item.cc:
Manual merge
sql/item.h:
Manual merge
sql/item_strfunc.h:
Manual merge
sql/item_sum.cc:
Manual merge
sql/mysql_priv.h:
Manual merge
sql/share/errmsg.txt:
Manual merge
sql/sql_class.h:
Manual merge
sql/sql_select.cc:
Manual merge
- Make the range-et-al optimizer produce E(#table records after table
condition is applied),
- Make the join optimizer use this value,
- Add "filtered" column to EXPLAIN EXTENDED to show
fraction of records left after table condition is applied
- Adjust test results, add comments
mysql-test/r/archive_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/auto_increment.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/bdb_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/bench_count_distinct.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/binlog_stm_blackhole.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/case.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/cast.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/compress.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ctype_collate.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ctype_cp1250_ch.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/date_formats.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/distinct.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/fulltext.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_compress.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_crypt.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_default.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_encrypt.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_gconcat.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_group.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_if.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_in.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_like.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_math.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_op.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_regexp.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_set.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_str.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_system.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_test.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_time.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/group_by.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/group_min_max.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/having.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/heap.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/heap_hash.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge_innodb.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge_ror.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/innodb_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/insert_update.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/join.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/join_nested.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/key_diff.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/myisam.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ndb_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/negation_elimination.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/null.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/olap.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/partition_pruning.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/query_cache.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/row.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/rpl_get_lock.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/rpl_master_pos_wait.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/select.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ssl.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ssl_compress.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/subselect.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/type_blob.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/union.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/varbinary.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/variables.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/view.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/ctype_cp1250_ch.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/func_like.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/group_min_max.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/index_merge_ror.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/index_merge_ror_cpk.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/join.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/partition_pruning.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
sql/opt_range.cc:
BUG#14940: Make range/index_merge/group-min-max optimizer produce TABLE::quick_condition_rows -
estimate of #records that will match the table condition.
sql/sql_class.cc:
BUG#14940: Add "filtered" column to output of EXPLAIN EXTENDED
sql/sql_select.cc:
BUG#14940:
- Make the join optimizer to use TABLE::quick_condition_rows=
= E(#table records after filtering with table condition)
- Add "filtered" column to output of EXPLAIN EXTENDED
sql/sql_select.h:
BUG#14940: Added comments
sql/table.h:
BUG#14940: Added comments
The problem was in that opt_sum_query() replaced MIN/MAX functions
with the corresponding constant found in a key, but due to imprecise
representation of float numbers, when evaluating the where clause,
this comparison failed.
When MIN/MAX optimization detects that all tables can be removed,
also remove all conjuncts in a where clause that refer to these
tables. As a result of this fix, these conditions are not evaluated
twice, and in the case of float number comparisons we do not discard
result rows due to imprecise float representation.
As a side-effect this fix also corrects an unnoticed problem in
bug 12882.
mysql-test/r/func_group.result:
BUG#20954 - test result adjustment.
Adjusted the test result of bug 12882 which was not preperly fixed.
The current patch corrects the problem that was fully corrected by the
patch for 12882.
The problem was that opt_sum_query() indicated that the optimizer may
remove all tables because all MIN/MAX/COUNT functions are constants,
but this lead to an empty result instead of NULL because the WHERE
clause was still evaluated.
The current fix removes all conjuncts in the where clause that
reference the removed tables, and thus corrects the problem.
mysql-test/r/select.result:
BUG#20954 - added test
mysql-test/r/subselect.result:
BUG#20954 - test result adjustment.
The fix removes those conditions in a where clause that refer to
tables optimized away by MIN/MAX optimization (opt_sum_query()).
mysql-test/t/select.test:
BUG#20954 - added test
sql/sql_select.cc:
Fix for BUG#20954: avg(keyval) retuns 0.38 but max(keyval) returns an empty set
When MIN/MAX optimization detects that all tables can be removed,
also remove all conjuncts in a where clause that refer to these
tables. As a result of this fix, these conditions are not evaluated
twice, and in the case of float number comparisons we do not discard
result rows due to imprecise float representation.
As a side-effect this fix also corrects an unnoticed problem in
bug 12882.
into mysql.com:/home/psergey/mysql-5.0-opt
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_subselect.h:
Auto merged
sql/sql_parse.cc:
Auto merged
mysql-test/r/subselect.result:
Manual merge
mysql-test/t/subselect.test:
Manual merge
sql/mysql_priv.h:
Manual merge
The bug caused a crash of the server if a subquery with
ORDER BY DESC used the range access method.
The bug happened because the method QUICK_SELECT_DESC::reset
was not reworked after MRR interface had been introduced.
mysql-test/r/subselect.result:
Added a test case for bug #20869.
mysql-test/t/subselect.test:
Added a test case for bug #20869.
The bug was due to a loss happened during a refactoring made
on May 30 2005 that modified the function JOIN::reinit.
As a result of it for any subquery the value of offset_limit_cnt
was not restored for the following executions. Yet the first
execution of the subquery made it equal to 0.
The fix restores this value in the function JOIN::reinit.
mysql-test/r/subselect.result:
Added a test case fir bug #20519.
mysql-test/t/subselect.test:
Added a test case fir bug #20519.
DESCRIBE returned the type BIGINT for a column of a view if the column
was specified by an expression over values of the type INT.
E.g. for the view defined as follows:
CREATE VIEW v1 SELECT COALESCE(f1,f2) FROM t1
DESCRIBE returned type BIGINT for the only column of the view if f1,f2 are
columns of the INT type.
At the same time DESCRIBE returned type INT for the only column of the table
defined by the statement:
CREATE TABLE t2 SELECT COALESCE(f1,f2) FROM t1.
This inconsistency was removed by the patch.
Now the code chooses between INT/BIGINT depending on the
precision of the aggregated column type.
Thus both DESCRIBE commands above returns type INT for v1 and t2.
mysql-test/r/analyse.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/bigint.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/create.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/olap.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/ps_2myisam.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/ps_3innodb.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/ps_4heap.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/ps_5merge.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/ps_6bdb.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/ps_7ndb.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/sp.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/subselect.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/type_ranges.result:
Adjusted the results after having fixed bug #19714.
mysql-test/r/view.result:
Added a test case for bug #19714.
mysql-test/t/view.test:
Added a test case for bug #19714.
into moonbone.local:/work/tmp_merge-5.0-opt-mysql
sql/item_subselect.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_select.cc:
Auto merged
mysql-test/r/subselect.result:
Manual merge
mysql-test/t/subselect.test:
Manual merge
into bodhi.local:/opt/local/work/mysql-5.1-runtime-merge-5.0
include/my_sys.h:
Auto merged
mysql-test/r/auto_increment.result:
Auto merged
mysql-test/r/func_math.result:
Auto merged
mysql-test/r/func_system.result:
Auto merged
mysql-test/r/func_time.result:
Auto merged
mysql-test/r/information_schema.result:
Auto merged
mysql-test/r/query_cache.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/trigger.result:
Auto merged
mysql-test/r/type_blob.result:
Auto merged
mysql-test/r/variables.result:
Auto merged
mysql-test/r/view.result:
Auto merged
mysql-test/t/trigger.test:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/log.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_trigger.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
storage/ndb/src/kernel/blocks/dbdict/Dbdict.hpp:
Auto merged
storage/ndb/src/mgmsrv/ConfigInfo.cpp:
Auto merged
sql/slave.h:
SCCS merged
mysql-test/r/show_check.result:
Manual merge.
mysql-test/t/show_check.test:
Manual merge.
sql/log_event.cc:
Manual merge.
sql/share/errmsg.txt:
Manual merge.
sql/sql_class.h:
Manual merge.
sql/sql_db.cc:
Manual merge.
may return a wrong result.
An Item_sum_hybrid object has the was_values flag which indicates whether any
values were added to the sum function. By default it is set to true and reset
to false on any no_rows_in_result() call. This method is called only in
return_zero_rows() function. An ALL/ANY subquery can be optimized by MIN/MAX
optimization. The was_values flag is used to indicate whether the subquery
has returned at least one row. This bug occurs because return_zero_rows() is
called only when we know that the select will return zero rows before
starting any scans but often such information is not known.
In the reported case the return_zero_rows() function is not called and
the was_values flag is not reset to false and yet the subquery return no rows
Item_func_not_all and Item_func_nop_all functions return a wrong
comparison result.
The end_send_group() function now calls no_rows_in_result() for each item
in the fields_list if there is no rows were found for the (sub)query.
mysql-test/t/subselect.test:
Added test case for bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
mysql-test/r/subselect.result:
Added test case for bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
sql/sql_select.cc:
Fixed bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
The end_send_group() function now calls no_rows_in_result() for each item
in the fields_list if there is no matching rows were found.
The ALL/ANY subqueries are the subject of MIN/MAX optimization. The matter
of this optimization is to embed MIN() or MAX() function into the subquery
in order to get only one row by which we can tell whether the expression
with ALL/ANY subquery is true or false.
But when it is applied to a subquery like 'select a_constant' the reported bug
occurs. As no tables are specified in the subquery the do_select() function
isn't called for the optimized subquery and thus no values have been added
to a MIN()/MAX() function and it returns NULL instead of a_constant.
This leads to a wrong query result.
For the subquery like 'select a_constant' there is no reason to apply
MIN/MAX optimization because the subquery anyway will return at most one row.
Thus the Item_maxmin_subselect class is more appropriate for handling such
subqueries.
The Item_in_subselect::single_value_transformer() function now checks
whether tables are specified for the subquery. If no then this subselect is
handled like a UNION using an Item_maxmin_subselect object.
mysql-test/t/subselect.test:
Added test case for bug#16302: Quantified subquery without any tables gives wrong results
mysql-test/r/subselect.result:
Added test case for bug#16302: Quantified subquery without any tables gives wrong results
sql/item_subselect.cc:
Fixed bug#16302: Quantified subquery without any tables gives wrong results
The Item_in_subselect::single_value_transformer() function now checks
whether tables are specified for the subquery. If no then this subselect is
handled like a UNION using an Item_maxmin_subselect object.
The problem was that we restored SQL_CACHE, SQL_NO_CACHE flags in SELECT
statement from internal structures based on value set later at runtime, not
the original value set by the user.
The solution is to remember that original value.
mysql-test/r/auto_increment.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_compress.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_math.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_system.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_time.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/information_schema.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/query_cache.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/rpl_get_lock.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/rpl_master_pos_wait.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/show_check.result:
Add result for bug#17203.
mysql-test/r/subselect.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/type_blob.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/variables.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/view.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/t/show_check.test:
Add test case for bug#17203.
sql/sql_lex.cc:
Reset SELECT_LEX::sql_cache together with SELECT_LEX::options.
sql/sql_lex.h:
Add SELECT_LEX::sql_cache field to store original user setting.
sql/sql_select.cc:
Output SQL_CACHE and SQL_NO_CACHE depending on stored original user setting.
sql/sql_yacc.yy:
Make effect of SQL_CACHE and SQL_NO_CACHE mutually exclusive. Ignore
SQL_CACHE if SQL_NO_CACHE was used. Remember what was set by the user.
Reset SELECT_LEX::sql_cache together with SELECT_LEX::options.
into a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-5.1-new
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/mysql-test-run.sh:
Auto merged
mysql-test/r/grant.result:
Auto merged
mysql-test/r/heap_btree.result:
Auto merged
mysql-test/r/information_schema_db.result:
Auto merged
mysql-test/r/lock_multi.result:
Auto merged
mysql-test/r/sp.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/view_grant.result:
Auto merged
mysql-test/t/lock_multi.test:
Auto merged
mysql-test/t/sp.test:
Auto merged
mysql-test/t/view_grant.test:
Auto merged
mysys/default.c:
Auto merged
server-tools/instance-manager/guardian.cc:
Auto merged
sql/field.h:
Auto merged
sql/item.h:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_timefunc.cc:
Auto merged
sql/lock.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_acl.cc:
Auto merged
sql/sql_delete.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_show.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql/table.cc:
Auto merged
storage/heap/hp_write.c:
Auto merged
storage/ndb/src/ndbapi/DictCache.cpp:
Auto merged
storage/ndb/src/ndbapi/DictCache.hpp:
Auto merged
client/mysqlbinlog.cc:
Manual merge from 5.0
client/mysqldump.c:
Manual merge from 5.0
configure.in:
Manual merge from 5.0
mysql-test/r/mysqldump.result:
Manual merge from 5.0
mysql-test/t/mysqldump.test:
Manual merge from 5.0
mysql-test/t/rpl_insert_id.test:
Manual merge from 5.0
server-tools/instance-manager/manager.cc:
Manual merge from 5.0
sql/field.cc:
Manual merge from 5.0
sql/ha_ndbcluster.cc:
Manual merge from 5.0
sql/mysqld.cc:
Manual merge from 5.0
sql/sql_base.cc:
Manual merge from 5.0
sql/sql_lex.cc:
Manual merge from 5.0
sql/sql_select.cc:
Manual merge from 5.0
sql/sql_table.cc:
Manual merge from 5.0
The unsigned flag in Item was not propagated through the single value subqueries.
This caused the result to be treated as signed.
mysql-test/r/subselect.result:
Added testcases for bug #19700
mysql-test/t/subselect.test:
Added testcases for bug #19700
sql/item.h:
Preserved the unsigned flag in Item_subselect
sql/item_subselect.cc:
Preserved the unsigned flag in Item_subselect
into mysql.com:/home/jimw/my/mysql-5.1-clean
include/my_pthread.h:
Auto merged
mysql-test/r/func_str.result:
Auto merged
mysql-test/r/join_outer.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/variables.result:
Auto merged
mysql-test/r/view.result:
Auto merged
mysql-test/t/rpl_temporary.test:
Auto merged
mysql-test/t/variables.test:
Auto merged
mysql-test/t/view.test:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_func.cc:
Auto merged
sql/item_strfunc.h:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/set_var.h:
Auto merged
sql/sql_acl.cc:
Auto merged
storage/ndb/test/ndbapi/Makefile.am:
Auto merged
storage/ndb/test/ndbapi/testInterpreter.cpp:
Auto merged
sql/set_var.cc:
Resolve conflict
storage/ndb/src/kernel/blocks/dbtup/DbtupExecQuery.cpp:
Resolve conflict
The convert_constant_item() function converts constant items to ints on
prepare phase to optimize execution speed. In this case it tries to evaluate
subselect which contains a derived table and is contained in a derived table.
All derived tables are filled only after all derived tables are prepared.
So evaluation of subselect with derived table at the prepare phase will
return a wrong result.
A new flag with_subselect is added to the Item class. It indicates that
expression which this item represents is a subselect or contains a subselect.
It is set to 0 by default. It is set to 1 in the Item_subselect constructor
for subselects.
For Item_func and Item_cond derived classes it is set after fixing any argument
in Item_func::fix_fields() and Item_cond::fix_fields accordingly.
The convert_constant_item() function now doesn't convert a constant item
if the with_subselect flag set in it.
mysql-test/t/view.test:
Added test case for bug#19077: A nested materialized derived table is used before being populated.
mysql-test/t/subselect.test:
Added test case for bug#19077: A nested materialized derived table is used before being populated.
mysql-test/r/view.result:
Added test case for bug#19077: A nested materialized derived table is used before being populated.
mysql-test/r/subselect.result:
Added test case for bug#19077: A nested materialized derived table is used before being populated.
sql/item_subselect.cc:
Fixed bug#19077: A nested materialized derived table is used before being populated.
The Item_subselect class constructor sets new with_subselect flag to 1.
sql/item_func.cc:
Fixed bug#19077: A nested materialized derived table is used before being populated.
The Item_func::fix_fields() sets new with_subselect flag from with_subselect flags of its arguments.
sql/item_cmpfunc.cc:
Fixed bug#19077: A nested materialized derived table is used before being populated.
The convert_constant_item() function now doesn't convert a constant item
with the with_subselect flag set.
The Item_cond::fix_fields() sets new with_subselect flag from with_subselect flags of its arguments.
sql/item.cc:
Fixed bug#19077: A nested materialized derived table is used before being populated.
Set new with_subselect flag to default value - 0 in the Item constructor.
sql/item.h:
Fixed bug#19077: A nested materialized derived table is used before being populated.
A new flag with_subselect is added to the Item class. It indicates that
expression which this item represents is a subselect or contains a subselect.
It is set to 0 by default.
into mysql.com:/home/kgeorge/mysql/5.1/merge
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/view.result:
Auto merged
sql/item_subselect.cc:
Auto merged
into mysql.com:/home/psergey/mysql-5.1-merge2
mysql-test/r/select.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
sql/sql_select.cc:
Auto merged
sql/table.h:
Auto merged
sql/opt_range.cc:
Manual merge
When a view statement is compiled on CREATE VIEW time, most of the
optimizations should not be done. Finding the right optimization
for a subquery is one of them.
Unfortunately the optimizer is resolving the column references of
the left expression of IN subqueries in the process of deciding
witch optimization to use (if needed). So there should be a
special case in Item_in_subselect::fix_fields() : check the
validity of the left expression of IN subqueries in CREATE VIEW
mode and then proceed as normal.
mysql-test/r/subselect.result:
test case
mysql-test/r/view.result:
chnaged explain due to column being resolved
mysql-test/t/subselect.test:
test case
sql/item_subselect.cc:
overloaded fix_fields to fix the left_expr in prepare_view_mode
sql/item_subselect.h:
fix_fields overloaded so it can prepare left_expr
Re-work best_access_path() and find_best() to reuse E(#rows(range access)) as
E(#rows(ref[_or_null](const) access) only when it is appropriate.
[This is the final cumulative patch]
mysql-test/r/select.result:
BUG#17379: Testcase
mysql-test/r/subselect.result:
BUG#17379: Updated test results
mysql-test/t/select.test:
BUG#17379: Testcase
sql/opt_range.cc:
BUG#17379: Wrong reuse of E(#rows(range)) as E(#rows(ref(const))):
Make range optimizer together with TABLE::quick_* also return TABLE::quick_n_ranges
sql/sql_select.cc:
BUG#17379: Wrong reuse of E(#rows(range)) as E(#rows(ref(const))):
Re-work best_access_path() to reuse E(#rows(range access)) as
E(#rows(ref[_or_null](const) access) only when it is appropriate.
sql/table.h:
BUG#17379: Wrong reuse of E(#rows(range)) as E(#rows(ref(const))):
Make range optimizer together with TABLE::quick_* also return TABLE::quick_n_ranges
into mysql.com:/home/my/mysql-5.1
mysql-test/lib/mtr_report.pl:
Auto merged
mysql-test/mysql-test-run.sh:
Auto merged
mysql-test/r/subselect.result:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_test.cc:
Auto merged
sql/sql_view.cc:
Auto merged
sql/sql_lex.cc:
manual merge
into rurik.mysql.com:/home/igor/dev/mysql-5.0-0
mysql-test/r/subselect.result:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/sql_select.cc:
Auto merged
This performance degradation was due to the fact that some
cost evaluation code added into 4.1 in the function find_best was
not merged into the code of the function best_access_path added
together with other code for greedy optimizer.
Added a parameter to the function print_plan. The parameter contains
accumulated cost for a given partial join.
The patch does not include a special test case since this performance
degradation is hard to reproduse with a simple example.
TODO: make the function find_best use the function best_access_path
in order to remove duplication of code which might result in incomplete
merges in the future.
mysql-test/r/delete.result:
Fixed bug #14292: performance degradation for a benchmark query.
Adjusted test results.
mysql-test/r/subselect.result:
Fixed bug #14292: performance degradation for a benchmark query.
Adjusted test results.
sql/mysql_priv.h:
Fixed bug #14292: performance degradation for a benchmark query.
Added a parameter to the function print_plan. The parameter contains
accumulated cost for a given partial join.
sql/sql_select.cc:
Fixed bug #14292: performance degradation for a benchmark query.
This performance degradation was due to the fact that some
cost evaluation code added into 4.1 in the function find_best was
not merged into the code of the function best_access_path added
together with other code for greedy optimizer.
sql/sql_test.cc:
Fixed bug #14292: performance degradation for a benchmark query.
Added a parameter to the function print_plan. The parameter contains
accumulated cost for a given partial join.
into mysql.com:/home/jimw/my/mysql-5.1-clean
BitKeeper/etc/ignore:
auto-union
BitKeeper/deleted/.del-mysql_upgrade.dsp:
Delete: VC++Files/client/mysql_upgrade.dsp
BitKeeper/deleted/.del-mysql_upgrade_ia64.dsp:
Delete: VC++Files/client/mysql_upgrade_ia64.dsp
BitKeeper/deleted/.del-mysql_upgrade.c:
Delete: client/mysql_upgrade.c
VC++Files/mysql.dsw:
Auto merged
VC++Files/mysql.sln:
Auto merged
VC++Files/mysql_ia64.dsw:
Auto merged
client/mysql.cc:
Auto merged
config/ac-macros/zlib.m4:
Auto merged
configure.in:
Auto merged
extra/yassl/Makefile.am:
Auto merged
extra/yassl/taocrypt/Makefile.am:
Auto merged
include/my_global.h:
Auto merged
include/mysql.h:
Auto merged
libmysql/libmysql.def:
Auto merged
libmysqld/libmysqld.def:
Auto merged
mysql-test/r/grant2.result:
Auto merged
mysql-test/r/sp-security.result:
Auto merged
mysql-test/r/subselect.result:
Auto merged
mysql-test/r/trigger.result:
Auto merged
mysql-test/r/udf.result:
Auto merged
mysql-test/t/grant2.test:
Auto merged
mysql-test/t/rpl_openssl.test:
Auto merged
mysql-test/t/rpl_rotate_logs.test:
Auto merged
mysql-test/t/sp-security.test:
Auto merged
mysql-test/t/trigger.test:
Auto merged
sql/item.cc:
Auto merged
sql/item.h:
Auto merged
sql/item_subselect.cc:
Auto merged
sql-common/client.c:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
client/Makefile.am:
Resolve conflict
config/ac-macros/yassl.m4:
Resolve conflict
mysql-test/include/have_udf.inc:
Resolve conflict
mysql-test/lib/mtr_process.pl:
Resolve conflict
mysql-test/mysql-test-run.pl:
Resolve conflict
mysql-test/r/have_udf.require:
Resolve conflict
mysql-test/r/rpl_openssl.result:
Resolve conflict
mysql-test/t/disabled.def:
Resolve conflict
mysql-test/t/information_schema.test:
Resolve conflict
server-tools/instance-manager/instance_options.cc:
Resolve conflict
sql/mysql_priv.h:
Resolve conflict
sql/set_var.cc:
Resolve conflict
support-files/mysql.spec.sh:
Resolve conflict
In the code that converts IN predicates to EXISTS predicates it is changing
the select list elements to constant 1. Example :
SELECT ... FROM ... WHERE a IN (SELECT c FROM ...)
is transformed to :
SELECT ... FROM ... WHERE EXISTS (SELECT 1 FROM ... HAVING a = c)
However there can be no FROM clause in the IN subquery and it may not be
a simple select : SELECT ... FROM ... WHERE a IN (SELECT f(..) AS
c UNION SELECT ...) This query is transformed to : SELECT ... FROM ...
WHERE EXISTS (SELECT 1 FROM (SELECT f(..) AS c UNION SELECT ...)
x HAVING a = c) In the above query c in the HAVING clause is made to be
an Item_null_helper (a subclass of Item_ref) pointing to the real
Item_field (which is not referenced anywhere else in the query anymore).
This is done because Item_ref_null_helper collects information whether
there are NULL values in the result. This is OK for directly executed
statements, because the Item_field pointed by the Item_null_helper is
already fixed when the transformation is done. But when executed as
a prepared statement all the Item instances are "un-fixed" before the
recompilation of the prepared statement. So when the Item_null_helper
gets fixed it discovers that the Item_field it points to is not fixed
and issues an error. The remedy is to keep the original select list
references when there are no tables in the FROM clause. So the above
becomes : SELECT ... FROM ... WHERE EXISTS (SELECT c FROM (SELECT f(..)
AS c UNION SELECT ...) x HAVING a = c) In this way c is referenced
directly in the select list as well as by reference in the HAVING
clause. So it gets correctly fixed even with prepared statements. And
since the Item_null_helper subclass of Item_ref_null_helper is not used
anywhere else it's taken out.
mysql-test/r/ps_11bugs.result:
Test case for the bug
mysql-test/r/subselect.result:
Explain updated because of the tranformation
mysql-test/t/ps_11bugs.test:
Testcase for the bug
sql/item.cc:
Taking out Item_null_helper as it's no longer needed
sql/item.h:
Taking out Item_null_helper as it's no longer needed
sql/item_subselect.cc:
The described change to the IN->EXISTS transformation
