mariadb

Tree: 49568aefe7

Author	SHA1	Message	Date
Sergey Petrunya	49568aefe7	MWL#90: Code cleanup: Unification of merged and non-merged SJM nests processing - Make join buffering code to take into account that JOIN_TABs are not a linear array anymore.	16 years ago
Sergey Petrunya	dad93f2c82	MWL#90, code movearound to unify merged and non-merged semi-join materialization processing - First code, needs cleanup.	16 years ago
Sergey Petrunya	0cc3724697	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Change "SUBQUERY#n" to "<subquery{n}>" in EXPLAIN output. We need to it to be lowercase so that EXPLAIN results do not differ in case between systems with case-sensitive and case-insensitive filesystems. - Remove garbage comments, add better comments.	16 years ago
Sergey Petrunya	52faa44966	Remove buildbot compilation warnings/errors on centos5-amd64-minimal	16 years ago
Sergey Petrunya	a15e342d0b	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Remove JOIN::all_tables as it is not useful. - Better wording in comments	16 years ago
Sergey Petrunya	62bf7f6124	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Code cleanu. - Make MWL#90 code require @@optimizer_switch='semijoin=on' - Update test results with the above - Fork subselect_mat.test - we want to check both semi-join materialization, which now has broader scope and non-semijoin materialization.	16 years ago
Sergey Petrunya	5a53be655c	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Merge into 5.3-subqueries	16 years ago
Sergey Petrunya	61864021ca	Code cleanup, remove junk comments	16 years ago
Sergey Petrunya	3f595889d3	Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Code cleanup - Query plan change is due to s/ha_rows JOIN_TAB::read_time/double JOIN_TAB::read_time/	16 years ago
Sergey Petrunya	ed8aa9868e	- Make subselect_sj2 testcase more stable - Better comments	16 years ago
Sergey Petrunya	b9688830ec	Subquery optimizations: - Better comments - Use more appropriate return types for functions - Provide handling where it was missing.	16 years ago
Sergey Petrunya	64d505d42f	Fix a crash when running subselect.test with --debug option: use correct number of tables (when we're optimizing a materializable semi-join nest, we're considering only tables from within that nest).	16 years ago
Sergey Petrunya	b2c57cedbf	Code cleanup in subquery optimizations	16 years ago
Sergey Petrunya	30bac79806	Always refer to materialized table as "SUBSELECT#%d" where %d is select number - for Item-based materialization, it was "materialized subselect" - for SJ-Materialization it was "subquery%d"	16 years ago
unknown	bdb00d844a	Fixed an error in the creation of REF access method for materialized semi-join, where the the REF buffer format was mistaken to be in record format instead of key format. The error was that the null byte for all fields of the record was in the front of the buffer, and not before each field data.	16 years ago
Sergey Petrunya	f46c5de011	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Make test results handle same-cost QEP races	16 years ago
Sergey Petrunya	7e5b19e1b7	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Update test results	16 years ago
Sergey Petrunya	9ae01f168d	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Update test results (checked, we get 0 because the subquery is actually evaluated by the EXPLAIN).	16 years ago
Sergey Petrunya	cef9a6bd13	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Update test results.	16 years ago
unknown	3b05fc78e5	Fixed a problem where the temp table of a materialized subquery was not cleaned up between PS re-executions. The reason was two-fold: - a merge with mysql-6.0 missed select_union::cleanup() that should have cleaned up the temp table, and - the subclass of select_union used by materialization didn't call the base class cleanup() method.	16 years ago
Sergey Petrunya	2775f80f7d	MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - First code (needs cleanup).	16 years ago
unknown	3fc85580c9	MWL#68: Subquery optimization: Efficient NOT IN execution with NULLs Fixed an error where the priority queue for the indexes used for partial matching was not emptied after each execution in all cases.	16 years ago
Sergey Petrunya	cb325eb2b2	Fix buildbot compile failure on hardy-amd64-makedist: invoke proper Item_int constructor.	16 years ago
Sergey Petrunya	8a06a7e3a7	MWL#110: Make EXPLAIN always show materialization separately - Add Item_in_subselect::get_identifier() that returns subquery's id - Change select_describe() to produce output in new format - Update test results (checked)	16 years ago
Sergey Petrunya	218310b162	Disable subselect_notembedded.test due to LPBUG#545137	16 years ago
Sergey Petrunya	3be133eb4d	Make test result stable (had different result orderings, on some platforms, both of which satisfied the ORDER BY clause).	16 years ago
Sergey Petrunya	6777a11b24	Fix merge error in pbxt suite test results	16 years ago
Sergey Petrunya	05433dc58c	Fix union.test failure in buildbot: alternate fix for BUG#49734 mysql-test/r/union.result: Update test results (checked, it should be "DEPENDENT SUBQUERY" as it will actually run subquery's join multiple times. There is no reason to do that but executor will still do it)	16 years ago
Sergey Petrunya	e58b56a2b6	Merge	16 years ago
Sergey Petrunya	7df026676b	Merge MariaDB-5.2 -> MariaDB 5.3	16 years ago
unknown	e0642712f5	MWL#68: Subquery optimization: Efficient NOT IN execution with NULLs Fix for the PBXT copy of subselect.test.	16 years ago
unknown	f59d1dcf0a	Merge in MWL#68: Subquery optimization: Efficient NOT IN execution with NULLs	16 years ago
Sergei Golubchik	f09ca00e08	merged	16 years ago
Sergey Petrunya	816a579f6f	Merge	16 years ago
Sergey Petrunya	47d0cf2929	Apply fix by Roy Lyseng: Bug#48623: Multiple subqueries are optimized incorrectly The function setup_semijoin_dups_elimination() has a major loop that goes through every table in the JOIN object. Usually, there is a normal "plus one" increment in the for loop that implements this, but each semijoin nest is treated as one entity and there is another increment that skips past the semijoin nest to the next table in the JOIN object. However, when combining these two increments, the next joined table is skipped, and if that happens to be the start of another semijoin nest, the correct processing for that nest will not be carried out. mysql-test/r/subselect_sj.result: Added test results for bug#48623 mysql-test/r/subselect_sj_jcl6.result: Added test results for bug#48623 mysql-test/t/subselect_sj.test: Added test case for bug#48623 sql/opt_subselect.cc: Omitted the "plus one" increment in the for loop, added "plus one" in the remaining switch case, fixed coding style issue in remaining increment operations.	16 years ago
Sergey Petrunya	85c8bce729	Update test results for the previous push	16 years ago
Sergey Petrunya	5c295e521a	Merge	16 years ago
Sergey Petrunya	c5a7bea5ea	Fix support-files/build-tags to work with recent versions of bazaar.	16 years ago
Sergey Petrunya	77e66c6985	BUG#43768: Prepared query with nested subqueries core dumps on second execution Fix two problems: 1. Let optimize_semijoin_nests() reset sj_nest->sjmat_info irrespectively of value of optimizer_flag. We need this in case somebody has turned optimization off between reexecutions of the same statement. 2. Do not pull out constant tables out of semi-join nests. The problem is that pullout operation is not undoable, and if a table is constant because it is 1/0-row table it may cease to be constant on the next execution. Note that tables that are constant because of possible eq_ref(const) access will still be pulled out as they are considered functionally-dependent.	16 years ago
Sergey Petrunya	ea982e336d	Apply fix by oystein.grovlen@sun.com 2010-03-12: Bug#48213 Materialized subselect crashes if using GEOMETRY type The problem occurred because during semi-join a materialized table was created which contained a GEOMETRY column, which is a specialized BLOB column. This caused an segmentation fault because such tables will have extra columns, and the semi-join code was not prepared for that. The solution is to disable materialization when Blob/Geometry columns would need to be materialized. Blob columns cannot be used for index look-up anyway, so it does not makes sense to use materialization. This fix implies that it is detected earlier that subquery materialization can not be used. The result of that is that in->exist optimization may be performed for such queries. Hence, extended query plans for such queries had to be updated. mysql-test/r/subselect_mat.result: Update extended query plan for subqueries that cannot use materialization due to Blobs. mysql-test/r/subselect_sj.result: Updated result file. mysql-test/r/subselect_sj_jcl6.result: Update result file. mysql-test/t/subselect_sj.test: Add test case for Bug#48213 that verifies that semi-join works when subquery select list contain Blob columns. Also verify that materialization is not used. sql/opt_subselect.cc: Disable materialization for semi-join/subqueries when the subquery select list contain Blob columns.	16 years ago
Sergey Petrunya	02e9fa62e7	BUG#45174: XOR in subqueries produces differing results in 5.1 and 5.4 BUG#50019: Wrong result for IN-subquery with materialization - Fix equality substitution in presense of semi-join materialization, lookup and scan variants (started off from fix by Evgen Potemkin, then modified it to work in all cases)	16 years ago
Sergei Golubchik	71b3e46b01	1. don't crash on failing to load a plugin with newer MYSQL_PLUGIN_INTERFACE_VERSION 2. don't copy st_mysql_plugin structure unnecessary (sizeof hasn't changed)	16 years ago
Sergei Golubchik	edfd875fc1	Fix myisam checksum patch to check for HA_OPTION_CHECKSUM after it was set, not before	16 years ago
unknown	3d2a74609a	MWL#68 Subquery optimization: Efficient NOT IN execution with NULLs This patch does three things: - It adds the possibility to force the execution of top-level [NOT] IN subquery predicates via the IN=>EXISTS transformation. This is done by setting both optimizer switches partial_match_rowid_merge and partial_match_table_scan to "off". - It adjusts all test cases where the complete optimizer_switch is selected because now we have two more switches. - For those test cases where the plan changes because of the new available strategies, we switch off both partial match strategies in order to force the "old" IN=>EXISTS strategy. This is done because most of these test cases specifically test bugs in this strategy. sql/opt_subselect.cc: Adds the possibility to force the execution of top-level [NOT] IN subquery predicates via the IN=>EXISTS transformation. This is done by setting both optimizer switches partial_match_rowid_merge and partial_match_table_scan to "off".	16 years ago
Michael Widenius	e14291c1ff	Fix for Bug #534626 MyISAM table created in MariaDB not readable by MySQL storage/myisam/mi_create.c: Don't set HA_OPTION_NULL_FIELDS if table is not using CHECKSUM as this makes the table incompatible with MySQL.	16 years ago
Michael Widenius	7e26959277	Automatic merge	16 years ago
Michael Widenius	77afc2be46	Fix for: Bug#44987 DELETE IGNORE and FK constraint - Now DELETE IGNORE skips over rows with a foreign key constraints (as it was supposed to do) mysql-test/r/foreign_key.result: Test case for Bug#44987 DELETE IGNORE and FK constraint mysql-test/t/foreign_key.test: Test case for Bug#44987 DELETE IGNORE and FK constraint sql/sql_delete.cc: Firx for Bug#44987 DELETE IGNORE and FK constraint Now DELETE IGNORE skips over rows with a foreign key constraints (as it was supposed to do) Bug fix inspired by: Moritz Mertinkat	16 years ago
unknown	3e32ba3ff1	Fix some compiler warnings seen in Buildbot. Add some extra error output and code cleanup in an attempt to fix/debug a rare random testsuite problem in check_warnings, where the exit code from mysqltest is somehow corrupted inside mysql-test-run.pl. include/my_global.h: Fix compiler warnings on some platforms. mysql-test/lib/My/SafeProcess.pm: Move dereference of $? subprocess exit code closer to where it is generated, to make the code more robust and on the chance that this will fix the occasional problems in check_warnings we see in Buildbot. mysql-test/mysql-test-run.pl: When check_warnings failed, also log the mysqld server for which it failed. sql/sql_lex.cc: Fix compiler warning about possibly uninitialised value, by rewriting a for() loop that is always executed at least once into a do .. while() loop with an assert. sql/table.cc: Fix compiler warning about uninitialised value. storage/federatedx/ha_federatedx.cc: Fix uninitialised variable. storage/maria/ma_delete.c: Fix compiler warning about uninitialised value. storage/maria/ma_loghandler.c: Fix compiler warning about uninitialised value. storage/myisam/ft_stopwords.c: Fix compiler warning. storage/myisam/mi_write.c: Fix compiler warning about possibly uninitialised value, by rewriting a while() loop that is always executed at least once into a do .. while() loop with an assert. storage/xtradb/btr/btr0cur.c: Fix compiler warning about possibly uninitialised value. support-files/compiler_warnings.supp: Fix warning suppression to cover all cases in yassl. vio/viossl.c: Fix compiler warning.	16 years ago
unknown	4d7b6a6ea1	Automerge MySQL 5.1.44 merge into latest MariaDB trunk.	16 years ago
unknown	b1a6297986	Fixes for two test failures in Buildbot. - Adjust timing in test case, to avoid test failures caused by high load on machines and consequent race conditions in the test case. - Add another variant of Valgrind suppressions for memory leak in system libraries when unloading dynamic object files. mysql-test/r/information_schema.result: Adjust timing to avoid test failures due to races. mysql-test/t/information_schema.test: Adjust timing to avoid test failures due to races. mysql-test/valgrind.supp: Add another variant of valgrind suppression for leak in system libs.	16 years ago

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