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https://dev.mysql.com/doc/refman/8.4/en/create-table-like.html
LIKE to create an empty table based on the definition of another table, including any column attributes and indexes defined in the original table: CREATE TABLE new_tbl LIKE orig_tbl; The copy is created using the same version of the table storage ...
https://dev.mysql.com/doc/refman/8.4/en/create-tablespace.html
The precise syntax and semantics depend on the storage engine used. MySQL NDB Cluster also supports tablespaces using the NDB storage engine. Considerations for InnoDB Considerations for NDB Cluster Options Notes InnoDB Examples NDB Example ...
https://dev.mysql.com/doc/refman/8.4/en/create-trigger.html
The SELECT privilege for the subject table if references to table columns occur using OLD.col_name or NEW.col_name in the trigger body. CREATE [DEFINER = user] TRIGGER [IF NOT EXISTS] trigger_name trigger_time trigger_event ON tbl_name FOR EACH ROW ...
https://dev.mysql.com/doc/refman/8.4/en/creating-many-tables.html
If you execute SELECT statements on many different tables, there is a little overhead when the table cache is full, because for every table that has to be opened, another must be closed. If you have many MyISAM tables in the same database ...
https://dev.mysql.com/doc/refman/8.4/en/creating-spatial-indexes.html
For InnoDB and MyISAM tables, MySQL can create spatial indexes using syntax similar to that for creating regular indexes, but using the SPATIAL keyword. For storage engines that support nonspatial indexing of spatial columns, the engine creates a ...
https://dev.mysql.com/doc/refman/8.4/en/csv-storage-engine.html
The CSV storage engine stores data in text files using comma-separated values format. The CSV storage engine is always compiled into the MySQL server. To examine the source for the CSV engine, look in the storage/csv directory of a MySQL source ...
https://dev.mysql.com/doc/refman/8.4/en/data-dictionary-schema.html
Data dictionary tables are protected and may only be accessed in debug builds of MySQL. However, MySQL supports access to data stored in data dictionary tables through INFORMATION_SCHEMA tables and SHOW statements. For an overview of the tables ...
https://dev.mysql.com/doc/refman/8.4/en/data-size.html
If you always use many columns when selecting from the table, the first column in the index should be the one with the most duplicates, to obtain better compression of the index. Design your tables to minimize their space on the disk. This can ...
https://dev.mysql.com/doc/refman/8.4/en/datetime.html
This section describes their characteristics, how they are similar, and how they differ. MySQL recognizes DATE, DATETIME, and TIMESTAMP values in several formats, described in Section 11.1.3, “Date and Time Literals”. For the DATE and DATETIME ...
https://dev.mysql.com/doc/refman/8.4/en/ddl-rewriter-installation.html
For example: mysql> SELECT PLUGIN_NAME, PLUGIN_STATUS, PLUGIN_TYPE FROM INFORMATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME LIKE 'ddl%'; +--------------+---------------+-------------+ | PLUGIN_NAME | PLUGIN_STATUS | PLUGIN_TYPE | ... This section describes ...
Displaying 1801 to 1810 of 2144 total results