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* Merge 10.5 into 10.6Marko Mäkelä2020-08-121-0/+1
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| * Merge 10.4 into 10.5Marko Mäkelä2020-08-101-0/+1
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| | * Merge 10.2 into 10.3Marko Mäkelä2020-08-101-0/+1
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| | | * MDEV-17066: Bytes lost or Assertion `status_var.local_memory_used == 0 after ↵Varun Gupta2020-08-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DELETE with subquery with ROLLUP The issue here is when records are read from the temporary file (filesort result in this case) via a cache(rr_from_cache). The cache is initialized with init_rr_cache. For correlated subquery the cache allocation is happening at each execution of the subquery but the deallocation happens only once and that was when the query execution was done. So generally for subqueries we do two types of cleanup 1) Full cleanup: we should free all resources of the query(like temp tables). This is done generally when the query execution is complete or the subquery re-execution is not needed (case with uncorrelated subquery) 2) Partial cleanup: Minor cleanup that is required if the subquery needs recalculation. This is done for all the structures that need to be allocated for each execution (example SORT_INFO for filesort is allocated for each execution of the correlated subquery). The fix here would be free the cache used by rr_from_cache in the partial cleanup phase.
* | | | MDEV-13694: Wrong result upon GROUP BY with orderby_uses_equalities=onVarun Gupta2020-07-081-0/+1
|/ / / | | | | | | | | | | | | | | | | | | | | | For the case when the SJM scan table is the first table in the join order, then if we want to do the sorting on the SJM scan table, then we need to make sure that we unpack the values to base table fields in two cases: 1) Reading the SJM table and writing the sort-keys inside the sort-buffer 2) Reading the sorted data from the sort file
* | | MDEV-21263: Allow packed values of non-sorted fields in the sort bufferVarun Gupta2020-01-211-2/+12
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This task deals with packing the non-sorted fields (or addon fields). This would lead to efficient usage of the memory allocated for the sort buffer. The changes brought by this feature are 1) Sort buffers would have records of variable length 2) Each record in the sort buffer would be stored like <sort_key1><sort_key2>....<addon_length><null_bytes><field1><field2>.... addon_length is the extra bytes that are required to store the variable length of addon field across different records. 3) Changes in rr_unpack_from_buffer and rr_from_tempfile to take into account the variable length of records. Ported WL#1509 Pack values of non-sorted fields in the sort buffer from MySQL by Tor Didriksen
* | MDEV-19698: Cleanup READ_RECORD::recordOleksandr Byelkin2019-06-071-2/+3
| | | | | | | | https://github.com/MariaDB/server/pull/777#issuecomment-496469366
* | Simplified away READ_RECORD::struct_lengthEugene Kosov2019-05-281-1/+1
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* | Simplified away READ_RECORD::cache_recordsEugene Kosov2019-05-281-1/+0
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* | Cleanup unused READ_RECORD::indexEugene Kosov2019-05-281-1/+0
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* | Cleanup unused READ_RECORD::formsEugene Kosov2019-05-281-2/+0
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* | Merge 10.2 into 10.3Marko Mäkelä2019-05-141-1/+1
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| * Merge 10.1 into 10.2Marko Mäkelä2019-05-131-1/+1
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| | * Merge branch '5.5' into 10.1Vicențiu Ciorbaru2019-05-111-1/+1
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| | | * Update FSF AddressVicențiu Ciorbaru2019-05-111-1/+1
| | | | | | | | | | | | | | | | * Update wrong zip-code
| | * | fix gcc 8 compiler warningsSergei Golubchik2019-03-141-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There were two newly enabled warnings: 1. cast for a function pointers. Affected sql_analyse.h, mi_write.c and ma_write.cc, mf_iocache-t.cc, mysqlbinlog.cc, encryption.cc, etc 2. memcpy/memset of nontrivial structures. Fixed as: * the warning disabled for InnoDB * TABLE, TABLE_SHARE, and TABLE_LIST got a new method reset() which does the bzero(), which is safe for these classes, but any other bzero() will still cause a warning * Table_scope_and_contents_source_st uses `TABLE_LIST *` (trivial) instead of `SQL_I_List<TABLE_LIST>` (not trivial) so it's safe to bzero now. * added casts in debug_sync.cc and sql_select.cc (for JOIN) * move assignment method for MDL_request instead of memcpy() * PARTIAL_INDEX_INTERSECT_INFO::init() instead of bzero() * remove constructor from READ_RECORD() to make it trivial * replace some memcpy() with c++ copy assignments
* | | | cleanup: hide HA_ERR_RECORD_DELETED in ha_rnd_next()Sergei Golubchik2018-05-121-1/+1
| | | | | | | | | | | | | | | | | | | | it's internal storage engine error, don't let it leak into the upper layer.
* | | | simplify READ_RECORD usage NFCEugene Kosov2017-08-311-1/+3
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | READ_RECORD read_record; ... // this // read_record.read_record(&read_record); // becomes just read_record.read_record();
* | | Allow READ_RECORD to make use of RAII and free itself on destructionVicențiu Ciorbaru2017-02-141-2/+6
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* | | Removed TABLE->sort to make it possible to have multiple active calls toMonty2016-03-221-1/+5
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | filesort and init_read_record() for the same table. This will simplify code for WINDOW FUNCTIONS (MDEV-6115) - Filesort_info renamed to SORT_INFO and moved to filesort.h - filesort now returns SORT_INFO - init_read_record() now takes a SORT_INFO parameter. - unique declaration is moved to uniques.h - subselect caching of buffers is now more explicit than before - filesort_buffer is now reusable even if rec_length has changed. - filsort_free_buffers() and free_io_cache() calls are removed - Remove one malloc() when using get_addon_fields() Other things: - Added --debug-assert-on-not-freed-memory option to make it easier to debug some not-freed-memory issues.
* | Fixed MDEV-8408Monty2015-10-231-1/+1
| | | | | | | | | | | | Assertion `inited==INDEX' failed in int handler::ha_index_first(uchar*) The crash was because errors from init_read_record_idx() was not taken care of.
* | MDEV-5120 Test suite test maria-no-logging failsMichael Widenius2014-09-301-1/+0
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The reason for the failure was a bug in an include file on debian that causes 'struct stat' to have different sized depending on the environment. This patch fixes so that we always include my_global.h or my_config.h before we include any other files. Other things: - Removed #include <my_global.h> in some include files; Better to always do this at the top level to have as few "always-include-this-file-first' files as possible. - Removed usage of some include files that where already included by my_global.h or by other files. client/mysql_plugin.c: Use my_global.h first client/mysqlslap.c: Remove duplicated include files extra/comp_err.c: Remove duplicated include files include/m_string.h: Remove duplicated include files include/maria.h: Remove duplicated include files libmysqld/emb_qcache.cc: Use my_global.h first plugin/semisync/semisync.h: Use my_pthread.h first sql/datadict.cc: Use my_global.h first sql/debug_sync.cc: Use my_global.h first sql/derror.cc: Use my_global.h first sql/des_key_file.cc: Use my_global.h first sql/discover.cc: Use my_global.h first sql/event_data_objects.cc: Use my_global.h first sql/event_db_repository.cc: Use my_global.h first sql/event_parse_data.cc: Use my_global.h first sql/event_queue.cc: Use my_global.h first sql/event_scheduler.cc: Use my_global.h first sql/events.cc: Use my_global.h first sql/field.cc: Use my_global.h first Remove duplicated include files sql/field_conv.cc: Use my_global.h first sql/filesort.cc: Use my_global.h first Remove duplicated include files sql/gstream.cc: Use my_global.h first sql/ha_ndbcluster.cc: Use my_global.h first sql/ha_ndbcluster_binlog.cc: Use my_global.h first sql/ha_ndbcluster_cond.cc: Use my_global.h first sql/ha_partition.cc: Use my_global.h first sql/handler.cc: Use my_global.h first sql/hash_filo.cc: Use my_global.h first sql/hostname.cc: Use my_global.h first sql/init.cc: Use my_global.h first sql/item.cc: Use my_global.h first sql/item_buff.cc: Use my_global.h first sql/item_cmpfunc.cc: Use my_global.h first sql/item_create.cc: Use my_global.h first sql/item_geofunc.cc: Use my_global.h first sql/item_inetfunc.cc: Use my_global.h first sql/item_row.cc: Use my_global.h first sql/item_strfunc.cc: Use my_global.h first sql/item_subselect.cc: Use my_global.h first sql/item_sum.cc: Use my_global.h first sql/item_timefunc.cc: Use my_global.h first sql/item_xmlfunc.cc: Use my_global.h first sql/key.cc: Use my_global.h first sql/lock.cc: Use my_global.h first sql/log.cc: Use my_global.h first sql/log_event.cc: Use my_global.h first sql/log_event_old.cc: Use my_global.h first sql/mf_iocache.cc: Use my_global.h first sql/mysql_install_db.cc: Remove duplicated include files sql/mysqld.cc: Remove duplicated include files sql/net_serv.cc: Remove duplicated include files sql/opt_range.cc: Use my_global.h first sql/opt_subselect.cc: Use my_global.h first sql/opt_sum.cc: Use my_global.h first sql/parse_file.cc: Use my_global.h first sql/partition_info.cc: Use my_global.h first sql/procedure.cc: Use my_global.h first sql/protocol.cc: Use my_global.h first sql/records.cc: Use my_global.h first sql/records.h: Don't include my_global.h Better to do this at the upper level sql/repl_failsafe.cc: Use my_global.h first sql/rpl_filter.cc: Use my_global.h first sql/rpl_gtid.cc: Use my_global.h first sql/rpl_handler.cc: Use my_global.h first sql/rpl_injector.cc: Use my_global.h first sql/rpl_record.cc: Use my_global.h first sql/rpl_record_old.cc: Use my_global.h first sql/rpl_reporting.cc: Use my_global.h first sql/rpl_rli.cc: Use my_global.h first sql/rpl_tblmap.cc: Use my_global.h first sql/rpl_utility.cc: Use my_global.h first sql/set_var.cc: Added comment sql/slave.cc: Use my_global.h first sql/sp.cc: Use my_global.h first sql/sp_cache.cc: Use my_global.h first sql/sp_head.cc: Use my_global.h first sql/sp_pcontext.cc: Use my_global.h first sql/sp_rcontext.cc: Use my_global.h first sql/spatial.cc: Use my_global.h first sql/sql_acl.cc: Use my_global.h first sql/sql_admin.cc: Use my_global.h first sql/sql_analyse.cc: Use my_global.h first sql/sql_audit.cc: Use my_global.h first sql/sql_base.cc: Use my_global.h first sql/sql_binlog.cc: Use my_global.h first sql/sql_bootstrap.cc: Use my_global.h first Use my_global.h first sql/sql_cache.cc: Use my_global.h first sql/sql_class.cc: Use my_global.h first sql/sql_client.cc: Use my_global.h first sql/sql_connect.cc: Use my_global.h first sql/sql_crypt.cc: Use my_global.h first sql/sql_cursor.cc: Use my_global.h first sql/sql_db.cc: Use my_global.h first sql/sql_delete.cc: Use my_global.h first sql/sql_derived.cc: Use my_global.h first sql/sql_do.cc: Use my_global.h first sql/sql_error.cc: Use my_global.h first sql/sql_explain.cc: Use my_global.h first sql/sql_expression_cache.cc: Use my_global.h first sql/sql_handler.cc: Use my_global.h first sql/sql_help.cc: Use my_global.h first sql/sql_insert.cc: Use my_global.h first sql/sql_lex.cc: Use my_global.h first sql/sql_load.cc: Use my_global.h first sql/sql_locale.cc: Use my_global.h first sql/sql_manager.cc: Use my_global.h first sql/sql_parse.cc: Use my_global.h first sql/sql_partition.cc: Use my_global.h first sql/sql_plugin.cc: Added comment sql/sql_prepare.cc: Use my_global.h first sql/sql_priv.h: Added error if we use this before including my_global.h This check is here becasue so many files includes sql_priv.h first. sql/sql_profile.cc: Use my_global.h first sql/sql_reload.cc: Use my_global.h first sql/sql_rename.cc: Use my_global.h first sql/sql_repl.cc: Use my_global.h first sql/sql_select.cc: Use my_global.h first sql/sql_servers.cc: Use my_global.h first sql/sql_show.cc: Added comment sql/sql_signal.cc: Use my_global.h first sql/sql_statistics.cc: Use my_global.h first sql/sql_table.cc: Use my_global.h first sql/sql_tablespace.cc: Use my_global.h first sql/sql_test.cc: Use my_global.h first sql/sql_time.cc: Use my_global.h first sql/sql_trigger.cc: Use my_global.h first sql/sql_udf.cc: Use my_global.h first sql/sql_union.cc: Use my_global.h first sql/sql_update.cc: Use my_global.h first sql/sql_view.cc: Use my_global.h first sql/sys_vars.cc: Added comment sql/table.cc: Use my_global.h first sql/thr_malloc.cc: Use my_global.h first sql/transaction.cc: Use my_global.h first sql/uniques.cc: Use my_global.h first sql/unireg.cc: Use my_global.h first sql/unireg.h: Removed inclusion of my_global.h storage/archive/ha_archive.cc: Added comment storage/blackhole/ha_blackhole.cc: Use my_global.h first storage/csv/ha_tina.cc: Use my_global.h first storage/csv/transparent_file.cc: Use my_global.h first storage/federated/ha_federated.cc: Use my_global.h first storage/federatedx/federatedx_io.cc: Use my_global.h first storage/federatedx/federatedx_io_mysql.cc: Use my_global.h first storage/federatedx/federatedx_io_null.cc: Use my_global.h first storage/federatedx/federatedx_txn.cc: Use my_global.h first storage/heap/ha_heap.cc: Use my_global.h first storage/innobase/handler/handler0alter.cc: Use my_global.h first storage/maria/ha_maria.cc: Use my_global.h first storage/maria/unittest/ma_maria_log_cleanup.c: Remove duplicated include files storage/maria/unittest/test_file.c: Added comment storage/myisam/ha_myisam.cc: Move sql_plugin.h first as this includes my_global.h storage/myisammrg/ha_myisammrg.cc: Use my_global.h first storage/oqgraph/oqgraph_thunk.cc: Use my_config.h and my_global.h first One could not include my_global.h before oqgraph_thunk.h (don't know why) storage/spider/ha_spider.cc: Use my_global.h first storage/spider/hs_client/config.cpp: Use my_global.h first storage/spider/hs_client/escape.cpp: Use my_global.h first storage/spider/hs_client/fatal.cpp: Use my_global.h first storage/spider/hs_client/hstcpcli.cpp: Use my_global.h first storage/spider/hs_client/socket.cpp: Use my_global.h first storage/spider/hs_client/string_util.cpp: Use my_global.h first storage/spider/spd_conn.cc: Use my_global.h first storage/spider/spd_copy_tables.cc: Use my_global.h first storage/spider/spd_db_conn.cc: Use my_global.h first storage/spider/spd_db_handlersocket.cc: Use my_global.h first storage/spider/spd_db_mysql.cc: Use my_global.h first storage/spider/spd_db_oracle.cc: Use my_global.h first storage/spider/spd_direct_sql.cc: Use my_global.h first storage/spider/spd_i_s.cc: Use my_global.h first storage/spider/spd_malloc.cc: Use my_global.h first storage/spider/spd_param.cc: Use my_global.h first storage/spider/spd_ping_table.cc: Use my_global.h first storage/spider/spd_sys_table.cc: Use my_global.h first storage/spider/spd_table.cc: Use my_global.h first storage/spider/spd_trx.cc: Use my_global.h first storage/xtradb/handler/handler0alter.cc: Use my_global.h first storage/xtradb/handler/i_s.cc: Use my_global.h first
* 5.3->5.5 mergeSergei Golubchik2011-11-221-1/+1
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* mysql-5.5.18 mergeSergei Golubchik2011-11-031-2/+2
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| * Updated/added copyright headersKent Boortz2011-06-301-2/+2
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* | merge.Sergei Golubchik2010-11-251-1/+8
|/ | | | | | checkpoint. does not compile.
* Bug #30584: delete with order by and limit clauses does notGleb Shchepa2010-06-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | use limit efficiently Bug #36569: UPDATE ... WHERE ... ORDER BY... always does a filesort even if not required Also two bugs reported after QA review (before the commit of bugs above to public trees, no documentation needed): Bug #53737: Performance regressions after applying patch for bug 36569 Bug #53742: UPDATEs have no effect after applying patch for bug 36569 Execution of single-table UPDATE and DELETE statements did not use the same optimizer as was used in the compilation of SELECT statements. Instead, it had an optimizer of its own that did not take into account that you can omit sorting by retrieving rows using an index. Extra optimization has been added: when applicable, single-table UPDATE/DELETE statements use an existing index instead of filesort. A corresponding SELECT query would do the former. Also handling of the DESC ordering expression has been added when reverse index scan is applicable. From now on most single table UPDATE and DELETE statements show the same disk access patterns as the corresponding SELECT query. We verify this by comparing the result of SHOW STATUS LIKE 'Sort% Currently the get_index_for_order function a) checks quick select index (if any) for compatibility with the ORDER expression list or b) chooses the cheapest available compatible index, but only if the index scan is cheaper than filesort. Second way is implemented by the new test_if_cheaper_ordering function (extracted part the test_if_skip_sort_order()). mysql-test/r/log_state.result: Updated result for optimized query, bug #36569. mysql-test/r/single_delete_update.result: Test case for bug #30584, bug #36569 and bug #53742. mysql-test/r/update.result: Updated result for optimized query, bug #30584. Note: "Handler_read_last 1" omitted, see bug 52312: lost Handler_read_last status variable. mysql-test/t/single_delete_update.test: Test case for bug #30584, bug #36569 and bug #53742. sql/opt_range.cc: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required * get_index_for_order() has been rewritten entirely and moved to sql_select.cc New QUICK_RANGE_SELECT::make_reverse method has been added. sql/opt_range.h: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required * get_index_for_order() has been rewritten entirely and moved to sql_select.cc New functions: * QUICK_SELECT_I::make_reverse() * SQL_SELECT::set_quick() sql/records.cc: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required * init_read_record_idx() has been modified to allow reverse index scan New functions: * rr_index_last() * rr_index_desc() sql/records.h: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required init_read_record_idx() has been modified to allow reverse index scan sql/sql_delete.cc: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required mysql_delete: an optimization has been added to skip unnecessary sorting with ORDER BY clause where select result ordering is acceptable. sql/sql_select.cc: Bug #30584, bug #36569, bug #53737, bug #53742: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required The const_expression_in_where function has been modified to accept both Item and Field pointers. New functions: * get_index_for_order() * test_if_cheaper_ordering() has been extracted from test_if_skip_sort_order() to share with get_index_for_order() * simple_remove_const() sql/sql_select.h: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required New functions: * test_if_cheaper_ordering() * simple_remove_const() * get_index_for_order() sql/sql_update.cc: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required mysql_update: an optimization has been added to skip unnecessary sorting with ORDER BY clause where a select result ordering is acceptable. sql/table.cc: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required New functions: * TABLE::update_const_key_parts() * is_simple_order() sql/table.h: Bug #30584, bug #36569: UPDATE/DELETE ... WHERE ... ORDER BY... always does a filesort even if not required New functions: * TABLE::update_const_key_parts() * is_simple_order()
* Manual merge from mysql-trunk-merge.Alexander Nozdrin2009-11-061-0/+4
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* Backport of:Konstantin Osipov2009-10-161-0/+75
---------------------------------------------------------- revno: 2630.22.11 committer: Konstantin Osipov <konstantin@mysql.com> branch nick: mysql-6.0-records timestamp: Mon 2008-08-11 16:40:09 +0400 message: Move read_record related functions to a new header - records.h sql/Makefile.am: Introduce records.h sql/handler.h: Forward-declare class handler (an unnecessary forward declaration was removed from mysql_priv.h). sql/item_subselect.cc: Make read_record function naming more consistent. Assign read_record function at once, no need to defer till read_first_record invocation. sql/mysql_priv.h: Include records.h, previously part of structs.h sql/records.cc: Use records.h sql/sql_select.h: Update to use new declarations. sql/structs.h: Move declarations of READ_RECORD and related functions to records.h
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