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aligned.h
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aria_backup.h
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assume_aligned.h
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atomic
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authors.h
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backup.h
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bounded_queue.h
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client_settings.h
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compat56.h
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config.h
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contributors.h
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create_options.h
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create_tmp_table.h
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cset_narrowing.h
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custom_conf.h
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datadict.h
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ddl_log.h
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debug.h
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debug_sync.h
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derived_handler.h
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derror.h
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des_key_file.h
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discover.h
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dur_prop.h
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embedded_priv.h
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event_data_objects.h
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event_db_repository.h
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event_parse_data.h
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event_queue.h
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event_scheduler.h
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events.h
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field.h
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field_comp.h
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filesort.h
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filesort_utils.h
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ft_global.h
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gcalc_slicescan.h
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gcalc_tools.h
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grant.h
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group_by_handler.h
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gstream.h
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ha_handler_stats.h
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ha_partition.h
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ha_sequence.h
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handle_connections_win.h
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handler.h
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hash.h
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hash_filo.h
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heap.h
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hostname.h
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ilist.h
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init.h
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innodb_priv.h
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item.h
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item_cmpfunc.h
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item_create.h
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item_func.h
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item_geofunc.h
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item_jsonfunc.h
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item_row.h
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item_strfunc.h
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item_subselect.h
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item_sum.h
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item_timefunc.h
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item_vers.h
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item_windowfunc.h
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item_xmlfunc.h
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json_table.h
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key.h
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keycaches.h
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lex.h
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lex_string.h
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lex_symbol.h
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lf.h
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lock.h
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log.h
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log_event.h
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log_event_data_type.h
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log_event_old.h
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log_slow.h
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maria.h
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mariadb.h
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mdl.h
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mem_root_array.h
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message.h
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multi_range_read.h
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my_alarm.h
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my_apc.h
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my_atomic.h
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my_atomic_wrapper.h
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my_base.h
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my_bit.h
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my_bitmap.h
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my_check_opt.h
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my_compare.h
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my_counter.h
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my_cpu.h
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my_crypt.h
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my_decimal.h
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my_default.h
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my_handler_errors.h
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my_json_writer.h
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my_libwrap.h
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my_md5.h
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my_minidump.h
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my_nosys.h
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my_rdtsc.h
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my_rnd.h
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my_service_manager.h
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my_stack_alloc.h
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my_stacktrace.h
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my_time.h
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my_tree.h
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my_uctype.h
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my_user.h
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myisam.h
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myisamchk.h
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myisammrg.h
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myisampack.h
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mysqld.h
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mysqld_default_groups.h
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mysqld_suffix.h
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mysys_err.h
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opt_range.h
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opt_subselect.h
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opt_trace.h
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opt_trace_context.h
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parse_file.h
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partition_element.h
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partition_info.h
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password.h
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pfs_file_provider.h
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pfs_idle_provider.h
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pfs_memory_provider.h
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pfs_metadata_provider.h
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pfs_socket_provider.h
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pfs_stage_provider.h
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pfs_statement_provider.h
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pfs_table_provider.h
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pfs_thread_provider.h
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pfs_transaction_provider.h
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privilege.h
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probes_mysql.h
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probes_mysql_dtrace.h
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probes_mysql_nodtrace.h
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procedure.h
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protocol.h
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proxy_protocol.h
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queues.h
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records.h
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repl_failsafe.h
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replication.h
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rijndael.h
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rowid_filter.h
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rpl_constants.h
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rpl_filter.h
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rpl_gtid.h
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rpl_injector.h
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rpl_mi.h
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rpl_parallel.h
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rpl_record.h
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rpl_record_old.h
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rpl_reporting.h
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rpl_rli.h
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rpl_tblmap.h
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rpl_utility.h
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scheduler.h
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scope.h
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select_handler.h
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semisync.h
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semisync_master.h
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semisync_master_ack_receiver.h
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semisync_slave.h
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service_versions.h
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session_tracker.h
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set_var.h
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slave.h
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socketpair.h
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source_revision.h
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sp.h
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sp_cache.h
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sp_head.h
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sp_pcontext.h
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sp_rcontext.h
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span.h
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spatial.h
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sql_acl.h
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sql_admin.h
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sql_alloc.h
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sql_alter.h
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sql_analyse.h
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sql_analyze_stmt.h
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sql_array.h
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sql_audit.h
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sql_base.h
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sql_basic_types.h
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sql_binlog.h
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sql_bitmap.h
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sql_bootstrap.h
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sql_cache.h
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sql_callback.h
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sql_class.h
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sql_cmd.h
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sql_connect.h
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sql_const.h
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sql_crypt.h
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sql_cte.h
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sql_cursor.h
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sql_db.h
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sql_debug.h
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sql_delete.h
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sql_derived.h
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sql_digest.h
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sql_digest_stream.h
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sql_do.h
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sql_error.h
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sql_explain.h
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sql_expression_cache.h
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sql_get_diagnostics.h
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sql_handler.h
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sql_help.h
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sql_hset.h
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sql_i_s.h
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sql_insert.h
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sql_join_cache.h
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sql_lex.h
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sql_lifo_buffer.h
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sql_limit.h
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sql_list.h
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sql_load.h
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sql_locale.h
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sql_manager.h
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sql_mode.h
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sql_parse.h
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sql_partition.h
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sql_partition_admin.h
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sql_plist.h
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sql_plugin.h
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sql_plugin_compat.h
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sql_prepare.h
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sql_priv.h
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sql_profile.h
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sql_reload.h
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sql_rename.h
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sql_repl.h
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sql_schema.h
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sql_select.h
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sql_sequence.h
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sql_servers.h
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sql_show.h
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sql_signal.h
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sql_sort.h
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sql_statistics.h
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sql_string.h
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sql_table.h
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sql_tablespace.h
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sql_test.h
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sql_time.h
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sql_trigger.h
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sql_truncate.h
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sql_tvc.h
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sql_type.h
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sql_type_fixedbin.h
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sql_type_fixedbin_storage.h
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sql_type_geom.h
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sql_type_int.h
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sql_type_json.h
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sql_type_real.h
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sql_type_string.h
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sql_udf.h
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sql_union.h
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sql_update.h
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sql_view.h
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sql_window.h
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ssl_compat.h
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strfunc.h
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structs.h
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sys_vars_shared.h
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t_ctype.h
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table.h
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table_cache.h
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thr_alarm.h
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thr_lock.h
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thr_malloc.h
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thr_timer.h
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thread_cache.h
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threadpool.h
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threadpool_generic.h
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threadpool_winsockets.h
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transaction.h
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tzfile.h
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tztime.h
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uniques.h
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unireg.h
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vers_string.h
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violite.h
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waiting_threads.h
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welcome_copyright_notice.h
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win_tzname_data.h
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winservice.h
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wqueue.h
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wsrep.h
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wsrep_applier.h
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wsrep_binlog.h
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wsrep_client_service.h
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wsrep_client_state.h
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wsrep_condition_variable.h
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wsrep_high_priority_service.h
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wsrep_mutex.h
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wsrep_mysqld.h
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wsrep_mysqld_c.h
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wsrep_on.h
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wsrep_priv.h
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wsrep_schema.h
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wsrep_server_service.h
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wsrep_server_state.h
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wsrep_sst.h
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wsrep_storage_service.h
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wsrep_thd.h
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wsrep_trans_observer.h
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wsrep_types.h
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wsrep_utils.h
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wsrep_var.h
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wsrep_xid.h
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xa.h
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Editing: sql_window.h
/* Copyright (c) 2016, 2022 MariaDB This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef SQL_WINDOW_INCLUDED #define SQL_WINDOW_INCLUDED #include "filesort.h" class Item_window_func; /* Window functions module. Each instance of window function has its own element in SELECT_LEX::window_specs. */ class Window_frame_bound : public Sql_alloc { public: enum Bound_precedence_type { PRECEDING, CURRENT, // Used for CURRENT ROW window frame bounds FOLLOWING }; Bound_precedence_type precedence_type; /* For UNBOUNDED PRECEDING / UNBOUNDED FOLLOWING window frame bounds precedence type is seto to PRECEDING / FOLLOWING and offset is set to NULL. The offset is not meaningful with precedence type CURRENT */ Item *offset; Window_frame_bound(Bound_precedence_type prec_type, Item *offset_val) : precedence_type(prec_type), offset(offset_val) {} bool is_unbounded() { return offset == NULL; } void print(String *str, enum_query_type query_type); }; class Window_frame : public Sql_alloc { public: enum Frame_units { UNITS_ROWS, UNITS_RANGE }; enum Frame_exclusion { EXCL_NONE, EXCL_CURRENT_ROW, EXCL_GROUP, EXCL_TIES }; Frame_units units; Window_frame_bound *top_bound; Window_frame_bound *bottom_bound; Frame_exclusion exclusion; Window_frame(Frame_units win_frame_units, Window_frame_bound *win_frame_top_bound, Window_frame_bound *win_frame_bottom_bound, Frame_exclusion win_frame_exclusion) : units(win_frame_units), top_bound(win_frame_top_bound), bottom_bound(win_frame_bottom_bound), exclusion(win_frame_exclusion) {} bool check_frame_bounds(); void print(String *str, enum_query_type query_type); }; class Window_spec : public Sql_alloc { bool window_names_are_checked; public: virtual ~Window_spec() = default; LEX_CSTRING *window_ref; SQL_I_List<ORDER> *partition_list; SQL_I_List<ORDER> *save_partition_list; SQL_I_List<ORDER> *order_list; SQL_I_List<ORDER> *save_order_list; Window_frame *window_frame; Window_spec *referenced_win_spec; /* Window_spec objects are numbered by the number of their appearance in the query. This is used by compare_order_elements() to provide a predictable ordering of PARTITION/ORDER BY clauses. */ int win_spec_number; Window_spec(LEX_CSTRING *win_ref, SQL_I_List<ORDER> *part_list, SQL_I_List<ORDER> *ord_list, Window_frame *win_frame) : window_names_are_checked(false), window_ref(win_ref), partition_list(part_list), save_partition_list(NULL), order_list(ord_list), save_order_list(NULL), window_frame(win_frame), referenced_win_spec(NULL) {} virtual const char *name() { return NULL; } bool check_window_names(List_iterator_fast<Window_spec> &it); const char *window_reference() { return window_ref ? window_ref->str : NULL; } void join_partition_and_order_lists() { *(partition_list->next)= order_list->first; } void disjoin_partition_and_order_lists() { *(partition_list->next)= NULL; } void print(String *str, enum_query_type query_type); void print_order(String *str, enum_query_type query_type); void print_partition(String *str, enum_query_type query_type); }; class Window_def : public Window_spec { public: LEX_CSTRING *window_name; Window_def(LEX_CSTRING *win_name, LEX_CSTRING *win_ref, SQL_I_List<ORDER> *part_list, SQL_I_List<ORDER> *ord_list, Window_frame *win_frame) : Window_spec(win_ref, part_list, ord_list, win_frame), window_name(win_name) {} const char *name() override { return window_name->str; } }; int setup_windows(THD *thd, Ref_ptr_array ref_pointer_array, TABLE_LIST *tables, List<Item> &fields, List<Item> &all_fields, List<Window_spec> &win_specs, List<Item_window_func> &win_funcs); ////////////////////////////////////////////////////////////////////////////// // Classes that make window functions computation a part of SELECT's query plan ////////////////////////////////////////////////////////////////////////////// class Frame_cursor; /* This handles computation of one window function. Currently, we make a spearate filesort() call for each window function. */ class Window_func_runner : public Sql_alloc { public: /* Add the function to be computed during the execution pass */ bool add_function_to_run(Item_window_func *win_func); /* Compute and fill the fields in the table. */ bool exec(THD *thd, TABLE *tbl, SORT_INFO *filesort_result); private: /* A list of window functions for which this Window_func_runner will compute values during the execution phase. */ List<Item_window_func> window_functions; }; /* Represents a group of window functions that require the same sorting of rows and so share the filesort() call. */ class Window_funcs_sort : public Sql_alloc { public: bool setup(THD *thd, SQL_SELECT *sel, List_iterator<Item_window_func> &it, st_join_table *join_tab); bool exec(JOIN *join, bool keep_filesort_result); void cleanup() { delete filesort; } friend class Window_funcs_computation; private: Window_func_runner runner; /* Window functions can be computed over this sorting */ Filesort *filesort; }; struct st_join_table; class Explain_aggr_window_funcs; /* This is a "window function computation phase": a single object of this class takes care of computing all window functions in a SELECT. - JOIN optimizer is exected to call setup() during query optimization. - JOIN::exec() should call exec() once it has collected join output in a temporary table. */ class Window_funcs_computation : public Sql_alloc { List<Window_funcs_sort> win_func_sorts; public: bool setup(THD *thd, List<Item_window_func> *window_funcs, st_join_table *tab); bool exec(JOIN *join, bool keep_last_filesort_result); Explain_aggr_window_funcs *save_explain_plan(MEM_ROOT *mem_root, bool is_analyze); void cleanup(); }; #endif /* SQL_WINDOW_INCLUDED */
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