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https://dev.mysql.com/doc/refman/8.0/en/information-schema-columns-table.html
The related ST_GEOMETRY_COLUMNS table provides information about table columns that store spatial data. The COLUMNS table has these columns: TABLE_CATALOG The name of the catalog to which the table containing the column belongs. TABLE_SCHEMA The ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-deleted-table.html
The INNODB_FT_DELETED table stores rows that are deleted from the FULLTEXT index for an InnoDB table. Before querying it, set the value of the innodb_ft_aux_table system variable to the name (including the database name) of the table that contains ...For more information about InnoDB FULLTEXT search, see Section 17.6.2.4, “InnoDB Full-Text Indexes”, and Section 14.9, “Full-Text Search ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-key-column-usage-table.html
This table provides no information about functional key parts because they are expressions and the table provides information only about columns. The KEY_COLUMN_USAGE table has these columns: CONSTRAINT_CATALOG The name of the catalog to which the ...CONSTRAINT_SCHEMA The name of the schema (database) to which the constraint ...
https://dev.mysql.com/doc/refman/8.0/en/json-table-functions.html
JSON_TABLE(expr, path COLUMNS (column_list) [AS] alias) Extracts data from a JSON document and returns it as a relational table having the specified columns. This can be a constant ('{"a":1}'), a column (t1.json_data, given table t1 specified prior ... This section contains information about JSON functions that convert JSON data to tabular ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-relational-tables.html
You can also use X DevAPI to work with relational tables. In MySQL, each relational table is associated with a particular storage engine. The examples in this section use InnoDB tables in the world_x schema. Show All Tables To display all ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-relational-tables.html
You can also use X DevAPI to work with relational tables. In MySQL, each relational table is associated with a particular storage engine. The examples in this section use InnoDB tables in the world_x schema. Show All Tables To display all ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-table-characteristics.html
The name of the performance_schema database is lowercase, as are the names of tables within it. Many tables in the performance_schema database are read only and cannot be modified: mysql> TRUNCATE TABLE performance_schema.setup_instruments; ERROR ...Generally, the effect is to reset the summary columns to 0 or NULL, not to remove ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-tp-thread-state-table.html
Note The Performance Schema table described here is available as of MySQL 8.0.14. Prior to MySQL 8.0.14, use the corresponding INFORMATION_SCHEMA table instead; see Section 28.5.4, “The INFORMATION_SCHEMA TP_THREAD_STATE Table”. The ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-trx-table.html
Transactions that have changed nontransactional tables are considered heavier than others, regardless of the number of altered and locked rows. The INNODB_TRX table provides information about every transaction currently executing inside InnoDB, ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-statistics-estimation.html
Optimizer statistics are not persisted to disk when innodb_stats_persistent=OFF or when individual tables are created or altered with STATS_PERSISTENT=0. Optimizer Statistics Updates Non-persistent optimizer statistics are updated when: Running ...