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https://dev.mysql.com/doc/refman/8.4/en/internal-temporary-tables.html
In some cases, the server creates internal temporary tables while processing statements. The server creates temporary tables under conditions such as these: Evaluation of UNION statements, with some exceptions described later. Evaluation of some ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-management-exchange.html
Table nt contains no foreign key references, and no other table has any foreign keys that refer to nt. For InnoDB tables, both tables must use the same row format. To determine the row format of an InnoDB table, query ...There are no rows in nt that ...
https://dev.mysql.com/doc/refman/8.4/en/create-table-select.html
You can create one table from another by adding a SELECT statement at the end of the CREATE TABLE statement: CREATE TABLE new_tbl [AS] SELECT * FROM orig_tbl; MySQL creates new columns for all elements in the SELECT. For example: mysql> CREATE ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-information-schema-system-tables.html
You can extract metadata about schema objects managed by InnoDB using InnoDB INFORMATION_SCHEMA tables. The InnoDB INFORMATION_SCHEMA table interface allows you to query this data using SQL. InnoDB INFORMATION_SCHEMA schema object tables include ...
https://dev.mysql.com/doc/mysql-shell/9.4/en/mysql-shell-utilities-parallel-table.html
MySQL Shell's parallel table import utility util.importTable() provides rapid data import to a MySQL relational table for large data files. The default dialect for the parallel table import utility is the default for the output file produced by the ...The utility analyzes an input data file, distributes it into chunks, and uploads the chunks to the target MySQL server using parallel ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-file-per-table-tablespaces.html
A file-per-table tablespace contains data and indexes for a single InnoDB table, and is stored on the file system in a single data file. File-per-table tablespace characteristics are described under the following topics in this section: ...Changing ...
https://dev.mysql.com/doc/refman/8.4/en/repair-table.html
[QUICK] [EXTENDED] [USE_FRM] REPAIR TABLE repairs a possibly corrupted table, for certain storage engines only. Although normally you should never have to run REPAIR TABLE, if disaster strikes, this statement is very likely to get back all your data ...Possible causes include but are not limited to file system ...
https://dev.mysql.com/doc/refman/8.4/en/show-table-status.html
SHOW TABLE STATUS [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW TABLE STATUS works like SHOW TABLES, but provides a lot of information about each non-TEMPORARY table. The LIKE clause, if present, indicates which table names to match. You ...
https://dev.mysql.com/doc/refman/8.4/en/myisamchk-table-info.html
To obtain a description of a MyISAM table or statistics about it, use the commands shown here. myisamchk -d tbl_name Runs myisamchk in “describe mode” to produce a description of your table. If you start the MySQL server with external locking ...The output from these commands is explained later in this ...
https://dev.mysql.com/doc/refman/8.4/en/replication-features-differing-tables.html
Source and target tables for replication do not have to be identical. A table on the source can have more or fewer columns than the replica's copy of the table. In addition, corresponding table columns on the source and the replica can use ...