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https://dev.mysql.com/doc/refman/8.0/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. Tables created for ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
For example, you can enable an optimization for one table in a statement and disable the optimization for a different table. References to table and index names follow the usual identifier case-sensitivity rules (see Section 11.2.3, “Identifier ...
https://dev.mysql.com/doc/refman/8.0/en/general-tablespaces.html
A general tablespace is a shared InnoDB tablespace that is created using CREATE TABLESPACE syntax. The TABLESPACE option can be used with CREATE TABLE to create tables in a general tablespaces, file-per-table tablespace, or in the system tablespace. Creating a General Tablespace General tablespaces are created using CREATE TABLESPACE ...To make an ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlpump.html
To dump grant table contents as logical definitions in the form of CREATE USER and GRANT statements, use the --users option and suppress all database dumping: mysqlpump --exclude-databases=% --users In the preceding command, % is a wildcard that ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-table-wait-summary-tables.html
The following sections describe the table I/O and lock wait summary tables: table_io_waits_summary_by_index_usage: Table I/O waits per index table_io_waits_summary_by_table: Table I/O waits per table table_lock_waits_summary_by_table: Table lock ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options-replica.html
--replicate-do-table=db_name.tbl_name Command-Line Format --replicate-do-table=name Type String Creates a replication filter by telling the replication SQL thread to restrict replication to a given table. You can also create such a filter by issuing ...On the source and each replica, you must set the server_id system variable to establish a unique replication ID in the range from 1 to 232 ... This section explains the server options and system variables that apply to replica servers and contains the following: ...
https://dev.mysql.com/doc/refman/8.0/en/optimize-table.html
Use OPTIMIZE TABLE in these cases, depending on the type of table: After doing substantial insert, update, or delete operations on an InnoDB table that has its own .ibd file because it was created with the innodb_file_per_table option enabled. By ...
https://dev.mysql.com/doc/refman/8.0/en/memory-storage-engine.html
The MEMORY storage engine (formerly known as HEAP) creates special-purpose tables with contents that are stored in memory. Characteristics of MEMORY Tables The MEMORY storage engine does not create any files on disk. DDL Operations for MEMORY ...A ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-limitations.html
Tables employing user-defined partitioning do not preserve the SQL mode in effect at the time that they were created. Therefore, a change in the SQL mode at any time after the creation of partitioned tables may lead to major changes in the behavior ...Partitioning and repartitioning operations (such as ALTER TABLE with PARTITION BY ..., REORGANIZE PARTITION, or REMOVE PARTITIONING) depend on file system operations for their ...
https://dev.mysql.com/doc/refman/8.0/en/system-schema.html
Previously, these tables were created in individual tablespace files in the mysql database directory. The change of grant-table storage engine underlies an accompanying change in MySQL 8.0 to the behavior of account-management statements such as ...