Mariadb analyze table. 快速选择最适合您需求的存储引擎。.
Apr 4, 2020 · I could not pass a variable table_name into ANALYZE TABLE, so this is the best I could do. Execute ANALYZE TABLE on the new table before swapping with the old one (default yes). mariadb-check and verbose. mariadb-check and all-databases. In summary: create a stored procedure script_to_analyse_all_tables() which loops through each table name, producing the query ANALYZE TABLE table_name for each table. The only major difference to Facebook's code and Matt’s patch is that MariaDB does Oct 6, 2011 · You can update the index statistics without doing OPTIMIZE TABLE. dump the data (logical) install & start MySQL 8. I have following settings in /etc/my. Disable using: --noanalyze-before-swap. Not in MariaDB 5. It is very easy to use. For example, you can add or delete columns, create or destroy indexes, change the type of existing columns, or rename columns or the table itself. The SHOW EXPLAIN command allows one to get an EXPLAIN (that is, a description of a query plan) of a query running in a certain connection. Sep 3, 2019 · Continue to Temporal Tables Part 2: System Time where we will dive into the syntax for enabling the capture and querying of this temporal data. See also: SQL Statements for MariaDB Xpand 23. n_leaf_pages instead of index->stat_n_leaf_pages to avoid needing lock. At the end of the talk we’ll REPAIR TABLE repairs a possibly corrupted table. InnoDB Defragmentation. 엔진 독립적 통계는 다음 중 하나가 참인 경우에만 ANALYZE TABLE 문에 의해 수집됩니다. mysqlcheck command. -1, --all-in-1: Invece di eseguire una query per ogni tabella, usa una query per database, specificando tutte le tabelle del database con una lista separata da virgole. ANALYZE explainable_statement; where the statement is any statement for which one can run EXPLAIN. Nov 1, 2023 · Summary. 5 the statistical data are chosen in a way to be very stable, they should change very little over time. innodb_stats_persistent_sample_pages - Number of index pages sampled (default 20) when estimating cardinality and statistics for indexed columns. You should schedule a cronjob that runs ANALYZE TABLE against all tables that have high-write, high-update, high-delete volume. 08, Present starting in MariaDB Enterprise Server 10. REPAIR TABLE works for Archive, Aria, CSV and MyISAM tables. We can also use the FULL modifier to return a second column that displays the type: Result: We can see that most of the “tables” in this database are in fact, views. 5, it's possible to limit the size of created disk temporary files and tables. mariadb-check is a maintenance tool that allows you to check, repair, analyze and optimize multiple tables from the command line. That way, there is no guess work. 快速选择最适合您需求的存储引擎。. The histogram_type variable determines whether single precision (SINGLE_PREC_HB) or double precision (DOUBLE_PREC_HB) height-balanced histograms are created. 0, only non-TEMPORARY tables are shown). No tables used: The SELECT was a sub query that did not use any tables. sql file? Jun 20, 2020 · 1. 0 , and in 5. In order to use it to update fulltext index statistics, the innodb_optimize_fulltext_only system variable must be set to 1. 1 , in 6. 6 CS, in 10. Prior to MariaDB 10. OPTIMIZE TABLE mytable; This is what OPTIMIZE TABLE does under the hood for InnoDB. But the following compare is still using index->stat_n_leaf_pages to determine whether a full table scan is necessary. STATISTICS. The views, information and opinions expressed by this content do not necessarily represent those of MariaDB or MariaDB Server; MDEV-10410; MariaDB crashes with TokuDB and ANALYZE TABLE in background. will produce an EXPLAIN output for the query that connection number connection_id is running. LIST. See Also. 1 per permettere di raccogliere le statistiche solo per determinati indici o colonne, utilizzando PERSISTENT FOR: ANALYZE TABLE tbl PERSISTENT FOR Using the Analyzer. If read_only is set to 1, then the SET PASSWORD statement is limited only to users with the SUPER privilege (<= MariaDB 10. It is essentially a commandline interface to the CHECK TABLE, REPAIR TABLE, ANALYZE TABLE and OPTIMIZE TABLE commands, and so, unlike myisamchk and aria_chk, requires the server to be running. 2. Progress Reporting in the mysql Command Line Client. This talk will give a lightning-fast introduction to the feature and show how one can quickly use it to pinpoint query performance problems. Engine-independent statistics will only be collected by the ANALYZE TABLE statement if one of the following is true: The use_stat_tables system variable is set to complementary or preferably. If mariadb-dump is run with the --copy-s3-tables option, the resulting file will contain a CREATE statement for a similar Aria table, followed by the table data and ending with an ALTER TABLE xxx ENGINE=S3. 3 MariaDB is the leading enterprise open source database with features previously only available in costly proprietary databases. It shows the EXPLAIN of a currently running query. To check one table use: mysqlcheck db_name tbl_name. 38+, 5. install 4. 存储表的键分布。. Not exists: Stop searching after more row if we find one single matching row. Running around to find analyze table is an effective downtime while you are in a place where a downgrade is hard. MariaDB Documentation / MariaDB ColumnStore (Analytics) MariaDB Server (SQL Database Server) MariaDB Xpand (Distributed SQL) / SQL Reference / Query Tuning / Collect Statistics with ANALYZE TABLE Inserting rows to log tables, updates to temporary tables and OPTIMIZE TABLE or ANALYZE TABLE statements on temporary tables are excluded from this limitation. May 02, 2012: How can I monitor the progress of an import of a large . [mysqld] max_heap_table_size=64M. The partitioning expression is used for all reads and writes on involving the partitioned table, thus it should be fast. 1 引入了对 InnoDB 表空间进行 Sep 8, 2021 · If you run ANALYZE TABLE on a regular this is to make the DBMS aware of manual changes to the InnoDB statistics tables. Jira Core help; Keyboard Shortcuts; Issue Reminders help; Log In Description. yourdbtable1 OK yourdbname2. 1에는 InnoDB 테이블스페이스 조각 모음 기능이 도입되었습니다. IP 범위 테이블 성능. This allows the optimizer to better estimate the frequency of values in the index and therefore make better decisions about the join order and filtering. Description. Query Optimizations →. It creates an empty table, and copies all of the rows from the existing table into it, and essentially deletes the old table and renames the new table, and then runs an ANALYZE to gather statistics. ibd takes currently 90G of space on disk. ANALYZE FORMAT=JSON produces output like EXPLAIN FORMAT=JSON, but amended with the data from query execution. Read-Only Replicas 도 참조하십시오. As long as your database runs on the most recent version of MySQL or MariaDB variant, running ANALYZE TABLE should be absolutely safe and not cause any unexpected stalls. OPTIMIZE TABLE works for InnoDB (before MariaDB 10. For InnoDB, see recovery modes. After extensive changes to a table, this statement may also improve performance of statements that use the table, sometimes significantly. yourdbtable2 Table is already up to date yourdbname3. 16-1. Содержимое, воспроизведенное на эт&ocy SHOW TABLES lists the tables (until MariaDB 11. MariaDB has some progress metering for the following: ALTER TABLE; ADD INDEX; DROP INDEX; LOAD DATA INFILE; CHECK TABLE; REPAIR TABLE; ANALYZE TABLE; OPTIMIZE TABLE; I have discussed subject before in terms of MySQL operations. My question would be: how much space does MariaDB need for the ANALYZE operation? 175 GB is not enough in this situation? Or are my settings / commands incorrect. The syntax is. The specific behavior depends on the value of the use_stat_tables system variable. 回收未使用的空间并对数据进行碎片整理。. TABLE_STATISTICS table shows statistics on table usage. 7. histogram_type. Optimizing Tables. myisamchk --recover tbl_name. See also: Options for mariadb-check & mysqlcheck in MariaDB Enterprise Server 23. However, there is a significant penalty. 0 and in 5. When running ANALYZE TABLE twice on a table in which statements or transactions are running, MariaDB blocks the second ANALYZE TABLE until the statement or transaction is complete. Lets simplify this for users. This occurs because the statement or transaction blocks the second ANALYZE TABLE statement from reloading the table definition, which it must do since the old one The table was a const table (a table with only one possible matching row), but no row was found. ANALYZE TABLE works with InnoDB, NDB, and MyISAM tables. MariaDB supports temporal data tables in the form of system-versioned tables (allowing you to query and operate on historic data), application-time periods (allow you to query and operate on a temporal range of data), and bitemporal tables (which combine both system-versioning and application-time periods). The connection id can be obtained with SHOW PROCESSLIST. Mar 18, 2024 · From MariaDB 11. The LIKE clause, if present on its own, indicates which table names to match. Users of all three major Percona Server for MySQL series – 5. $ systemctl restart mariadb. Mar 29, 2022 · MariaDB has the SHOW EXPLAIN command. In the mariadb client, run EXPLAIN on a query and copy the output. This series demonstrates the power of temporal tables and queries using MariaDB. Jun 13, 2020 · Analyze Table (分析表) MySQL 的Optimizer（优化元件）在优化SQL语句时，首先需要收集一些相关信息，其中就包括表的cardinality（散列程度），它 表示某个索引对应的列包含多少个不同的值——如果cardinality大大少于数据的实际散列程度，那么索引就基本失效了。. Writing Logs Into Tables. You don't need to run ANALYZE often, once a month is a ballpark figure, for some applications once might be enough. 0 and was removed in MariaDB 11. May 5, 2016 · If you have the general log enabled, simply do a grep -i "analyze table" against the general log file and locate the timestamp just about the command. Below is an example where I generate a histogram with size=10, then run another ANALYZE to A partitioning function is an SQL expression returning an integer or temporal value, used to determine which row will contain a given row. For me, "Table is already up to date" means that "statistics were not updated", while actually statistics was updated. Run ANALYZE TABLE afterwards on ANALYZE will show "Table is already up to date" while it re-calculates and updates table statistics. But in 5. See also: SQL Statements for MariaDB Enterprise Server A (as yet incomplete) list of how MariaDB's output is different from MySQL can be found here: EXPLAIN FORMAT=JSON differences from MySQL. It can autocorrect the data to match the destination data type, accept the data, and trigger an alert. or. etc Repairing tables yourdbname10. 4 ES, in 10. To check all tables from a database: mysqlcheck –databases db_name. ANSWER TO YOUR QUESTION. 구체적인 동작은 use_stat_tables 시스템 변수의 값에 따라 달라집니다. Version of MariaDB: 10. ANALYZE TABLE. 5, the client was called mysqlcheck. 将表从 MyISAM 转换为 InnoDB 时出现问题。. uninstall 2. Equivale a --databases specificando tutti i database. mytable; if the table was MyISAM is this: ALTER TABLE mydb. See also: SQL Statements for MariaDB Enterprise Server 23. Fortunately, it is quite fast, so it does not hurt to run occasionally. Progress reporting is enabled by default in the mariadb client. The output is always accompanied with a Jun 6, 2020 · It checks the table mysql. La sintassi di ANALYZE TABLE è stata estesa in MariaDB 10. 5; analyze_sample_percentage. 5. 5 ES, in 10. 2 and below), no histograms are created when running an ANALYZE TABLE. Set to 0 to let MariaDB decide what percentage of rows to sample. To illustrate the process of such migration, I use MariaDB 10. Do you know about MariaDB’s ANALYZE for statements feature? It is a must if you need to analyze the performance of complex queries. 6. To apply the changes, restart the database server. 3 Not in MariaDB 5. The table remains locked during analysis. ↑ Optimization and Tuning ↑. under: » MariaDB Server Documentation » Using MariaDB Server » SQL Statements & Structure » SQL Statements » Administrative SQL Statements » System Tables » Information Schema » Information Schema Tables SHOW ANALYZE allows one to retrieve ANALYZE -like output from a currently running statement. 2. 4. The formatted EXPLAIN will be shown. aria_ block_ size. analyze_ sample_ percentage. This will tell me how long it has been since the table stats were updated. See also Read-Only Replicas. Deprecated: MariaDB 11. -a, --analyze: Analizza le tabelle specificate. statistics WHERE table_schema='mydb' AND table_name='mytable'; ANALYZE TABLE is a read-only operation and does issue a table-wide read lock. It can still be accessed under this name, via a symlink in Linux, or an alternate binary in Windows. 2 CS. mytable; MyISAM MDEV-23991 reduced ANALYZE TABLE/background analyze lock scope. OPTIMIZE TABLE works for InnoDB , MyISAM, and ARCHIVE tables. 20+, and 8. The Aria storage engine supports progress reporting for the ANALYZE TABLE statement. -A, --all-databases: Controlla tutti i database. 6, mariadb-check is a symlink to mysqlcheck. For example a there was no FROM clause or a FROM DUAL clause. So we’ve decided to join these commands together and introduced the SHOW ANALYZE command. When the ANALYZE TABLE statement is executed, MariaDB may also collect engine-independent statistics for the table. The equivalent of OPTIMIZE TABLE mydb. ANALYZE TABLE 는 분할된 테이블에도 지원됩니다. mytable ENGINE=MyISAM; ANALYZE TABLE mydb. To learn more about this you can watch the MariaDB Server Fest 2021 recording on the topic. call this stored procedure; delete this stored procedure afterwards (if you dont want it TABLE to reclaim the unused space and to defragment the data file. Percentage of rows from the table ANALYZE TABLE will sample to collect table statistics. You can now click on various part to get more information about them. It was removed as a separate statement in MariaDB 10. $ systemctl restart mysql. In doing so btr_get_size(index, BTR_N_LEAF_PAGES, &mtr) was stored temporarily into result. The ANALYZE TABLE statement includes the PERSISTENT FOR clause. Part 1 introduces temporal tables and relevant use cases. ANALYZE TABLE for MariaDB Xpand ANALYZE produces an overview, while the ANALYZE FORMAT=JSON command provides a more detailed view of the query plan and the query execution. TOKUDB_BACKGROUND_JOB_STATUS; This command crashes MariaDB : MariaDB [(none Mar 9, 2022 · The SHOW TABLES command lists the non- TEMPORARY tables, sequences and views in a given database: Result: That listed all tables in the current database, which is called pethouse. MariaDB 10. Therefore, MariaDB is the go-to pick for applications that need to react intuitively to discrepancies in data input. MariaDB is the leading enterprise open source database with features previously only available in costly proprietary databases. Oct 3, 2010 · Give feedback to Atlassian; Help. In the upcoming MariaDB Server 10. ) Often a better index is the 'real' cure for a poorly performing query. Description: Percentage of rows from the table ANALYZE TABLE will sample to collect table statistics. 14, ANALYZE TABLE is supported for S3 tables Negli altri Storage Engine, in MariaDB 5. Table Jul 26, 2022 · MariaDB is more flexible than PostgreSQL in terms of data typing. 일반적이고 성능이 낮은 디자인 패턴 (EAV) 게다가 대안. If a new disk temporary table will cause tmp_dir over the limitation, then this query will It is recommended to set this value on the server to 64M per GB of memory. MariaDB Documentation / MariaDB Xpand (Distributed SQL) / SQL Reference / Query Tuning / Collect Statistics with ANALYZE TABLE / ANALYZE TABLE for MariaDB Xpand Overview. 0. 2). If that value is more than 90 days old for a given table, I definitely need to run ANALYZE TABLE. ALTER TABLE mytable ENGINE=InnoDB; ANALYZE TABLE mytable; In details. For CSV, see also Checking and Repairing CSV Tables. MECHANISM #3. 3 ES, in 10. If the key is longer than the max key length for the used storage engine and the storage engine supports long unique index, a HASH key will be created. By default, it has the same effect as. Dynamic PDs are automatically collected in real time by observing writes and persisting statistics to system data structures. 6, which is actually the most used version of MariaDB. Enterprise grade, wallet friendly. 6 ES, in 10. ANALYZE TABLE with the DROP HISTOGRAM clause removes histogram statistics for the named table columns from the data dictionary. Using the analyzer is very simple. Yes, you can kill ANALYZE TABLE and wait briefly for the read lock to be released. aria_chk --recover tbl_name. Unique, if index type is not specified, is normally a BTREE index that can also be used by the optimizer to find rows. The syntax of the new command is: SHOW ANALYZE [FORMAT=JSON] FOR <connection_id>; For the FORMAT=JSON variant, the output is similar to ANALYZE [FORMAT=JSON] output. See MDEV-30544 and MDEV-30545. 1, TRUNCATE TABLE si comporta diversamente da DELETE nei seguenti casi: Le operazioni truncate eliminano e ricreano la tabella, e questo è molto più veloce che cancellare le righe una per una, in particolare per le tabelle di grandi dimensioni. You can disable it with --disable-progress-reports. ← Operating System Optimizations. aria_ checkpoint_ interval If it is set to 0 (the default for MariaDB 10. Analyze tables ANALYZE TABLE supplier; information and opinions expressed by this content do not necessarily represent those of MariaDB or any other party. Sometimes a large DELETE can trigger the need for ANALYZE. 24. Disable using: --nocheck-alter. 3. 3 CS, and in 10. yourdbtable3 note : Table does not support optimize, doing recreate + analyze instead status : OK etc. 08, in 23. The table X1. Using mysqlcheck The Slow Query Log considers the following statements administrative: ALTER TABLE, ANALYZE TABLE, CHECK TABLE, CREATE INDEX, DROP INDEX, OPTIMIZE TABLE, and REPAIR TABLE. The first line copies the table to a temp table, switching temp table for the original table. Increasing this value will increases index The SHOW TABLE_STATISTICS statementis part of the User Statistics feature. 09 , in 6. As of MariaDB 10. 19 부터 read_only 가 설정된 경우 ANALYZE TABLE 문은 바이너리 로그에 기록되지 않습니다. It is automatically disabled in batch mode. As a result, for huge tables it may work for hours and days and does not server the purpose. Mar 29, 2011 · yourdbname1. Parses the --alter specified and tries to warn of possible unintended behavior ( default yes). Further, MariaDB Enterprise implements a cloud-native storage architecture, and can optionally use MariaDB starting with 10. Configures the server to use specific algorithms for ALTER TABLE operations. Only one table name is permitted for this syntax. IP 범위 테이블 성능 개선. 1 ha esteso ANALYZE TABLE per supportare le statistiche indipendenti dallo storage engine. 000000 Jun 4, 2015 · InnoDB doesn't support the OPTIMIZE the way MyISAM does. 1, but effectively replaced by the generic SHOW information_schema_table statement. See aria_chk and myisamchk for more. ALTER TABLE enables you to change the structure of an existing table. Block size to be used for Aria index pages. When you run. Blog 1 of a 5-part temporal tables tutorial series. OPTIMIZE TABLE performs ANALYZE TABLE after doing some table compression. This is intended to be a temporary setting, and should be reset to 0 once the fulltext index has been re-organized. The WHERE and LIKE clauses can be given to select rows using more general conditions, as discussed in Extended SHOW. 4 CS, in 10. TABLE to reclaim the unused space and to defragment the data file. You can also change the comment for the table and the storage engine of the table. analyze table under: » MariaDB Server Documentation » Using MariaDB Server » SQL Statements & Structure » SQL Statements » Table Statements Store key distributions for a table. MariaDB supports the following partitioning types: RANGE. Add the following line in the MySQL configuration file and restart the service. 2 ES, in 10. upgrade mechanism used: 1. Le operazioni truncate causano una commit implicita. Otherwise I do a random sampling and pick 10% of the tables to analyze. It does something different. 1. For example: Paste the output into the EXPLAIN Analyzer input box and click the "Analyze Explain" button. 3 See also: SQL Statements for MariaDB Xpand 6. I think, this is misleading. ANALYZE TABLE は、MariaDB においてテーブルに関する統計情報を収集し、分析するための便利なステートメントですが、いくつかの代替方法があります。 状況に応じて適切な方法を選択することで、パフォーマンスの向上や、トラブルの回避を図ることができます。 mariadb-dump will by default ignore S3 tables. Storage Engine Index Types. Commandline:--analyze-sample-percentage=# Scope: Global, Session Dynamic: Yes Data Type: numeric; Default Value: 100. The userstat system variable must be set to 1 to Lists information on the non-temporary tables, sequences, and views in the given database. That's the closest that InnoDB can get to doing an OPTIMIZE. innodb_table_stats and specifically the last_update column. Output Format. cnf: innodb_log_file_size=4G innodb_buffer_pool_size=50G. There are a number of variables that control persistent statistics: innodb_stats_persistent - when set (the default) enables InnoDB persistent statistics. Content reproduced on this site is the property of its respective owners, and this content is not reviewed in advance by MariaDB. The command. 3 and later, this also includes ALTER SEQUENCE statements. (This is unlike OPTIMIZE TABLE, which is even less useful and much slower. This tool does not work with partitioned tables. SHOW ANALYZE [FORMAT=JSON] FOR <connection_id>; connects to the query running in connection connection_id, gets information about the query plan it is executing, also gets information about the runtime statistics of the execution so far and Oct 3, 2022 · ANALYZE TABLE is rarely needed. There are 4 related questions . MariaDB Xpand's Dynamic Probability Distributions (PDs) on table columns are designed around providing live, up-to-the-minute statistics on commonly queried table columns. The information_schema. ANALYZE TABLE is also supported for partitioned tables. The general query log and the slow query log can be written into system tables. A suggested approach to get a reasonably accurate count of the table size, when SELECT COUNT(*) is taking a long time to complete, could be: ANALYZE TABLE my_table_name; SHOW TABLE STATUS LIKE 'my_table_name'; This comes in especially handy when importing a large amount of data into a table, and you want to track the progress of the import Analyze given tables. 07 ES, in 10. 1, only if the innodb_file_per_table server system variable is set), Aria, MyISAM and ARCHIVE tables, and should be used if you have deleted a large part of a table or if you have made many changes to a table with variable-length rows (tables that have VARCHAR, VARBINARY, BLOB, or TEXT columns Apr 28, 2017 · OPTIMIZE TABLE works with InnoDB, MyISAM, and ARCHIVE tables. This statement requires SELECT and INSERT privileges for the table. Feb 20, 2023 · The process consists of the following 4 operations: search for eventual incompatibilities. mariadb-upgrade You can use OPTIMIZE. From MariaDB 10. This does NOT happen without engine-independent persistent statistics enabled. ALTER TABLE ANALYZE PARTITION 를 사용하여 하나 이상의 파티션을 분석할 수 있습니다. 5 ANALYZE TABLE 문이 실행되면 MariaDB 는 테이블에 대한 엔진 독립적 통계를 수집할 수도 있습니다. Temporal Tables. See also: System Variables for MariaDB Enterprise Server 23. SELECT * FROM information_schema. 19, ANALYZE TABLE statements are not logged to the binary log if read_only is set. x are all safe. In MariaDB 10. 1 merged Facebook's defragmentation code prepared for MariaDB by Matt, Seong Uck Lee from Kakao. yourdbtable10 warning : Number of rows changed from 121378 to 81562 status : OK Oct 1, 2016 · And to check the ANALYZE TABLE task status, I use : SELECT * FROM INFORMATION_SCHEMA. Since fulltext re-organization can take a long time Sep 20, 2020 · Abstract. mariadb-schema-change Options for MariaDB Tools. 5 CS, in 10. The mysqlcheck client performs table maintenance: It checks, repairs, optimizes, or analyzes tables. You can use ALTER TABLE ANALYZE PARTITION to analyze one or more partitions. The mariadb command line client; The mytop that comes with MariaDB has a '%' column which shows the progress. This page is part MariaDB Enterprise can be deployed as a columnar database for real-time analytics at scale, using distributed data and massively parallel processing (MPP) to perform interactive, ad hoc queries on hundreds of billions of rows with standard SQL. load the data. 0, only non- TEMPORARY tables are shown), sequences and views in a given database. When the internal in-memory temporary table is oversize and converting to MyISAM/Aria table to store on disk, this option will limit the max space of tmp_dir. Engine-independent statistics will only be collected by the ANALYZE TABLE statement if one of the following is true: The use_stat_tables system By default, an OPTIMIZE TABLE will defragment a table. 基于直方图的统计信息可以在某些情况下改进优化器查询计划。. The permitted index_types for each storage engine. TODO: MariaDB's output format description. 0 with the engine independent statistics it is possible. 3, double ANALYZE TABLE examines key distribution and stores them in INFORMATION_SCHEMA. change repo 3. . Jan 14, 2020 · ANALYZE PARTITION reads (and locks) all rows in the InnoDB table, even for a tiny partition. The feature described below has been deprecated in MariaDB 11. 1) or READ ONLY ADMIN privilege (>= MariaDB 10. 9 Jan 10, 2024 · Knowledge Base » MariaDB Server Documentation » Using MariaDB Server » SQL Statements & Structure » SQL Statements » Administrative SQL Statements » ANALYZE and EXPLAIN Statements » ANALYZE: Interpreting rows and filtered members Nov 17, 2023 · After an upgrade its always hoped queries will be better. 이 사이트에 복제된 콘텐츠는 해당 소유자의 자산이며 MariaDB is the leading enterprise open source database with features previously only available in costly proprietary databases. Keyboard users: Escape to exit. Entity-Attribute-Value Implementation. 4 and later, the use_stat_tables system variable Oct 24, 2022 · The “ANALYZE TABLE” command generates and stores histograms for the data. SHOW TABLE STATUS works like SHOW TABLES, but provides more extensive information about each table (until MariaDB 11. MariaDB starting with 10. . rw bb rm xl ig wj yn tq lh zq