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https://dev.mysql.com/doc/refman/8.0/en/sys-schema-tables-with-full-table-scans.html
These views display which tables are being accessed with full table scans. The schema_tables_with_full_table_scans and x$schema_tables_with_full_table_scans views have these columns: object_schema The schema name. rows_full_scanned The total number ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-schemata-extensions-table.html
The SCHEMATA_EXTENSIONS table (available as of MySQL 8.0.22) augments the SCHEMATA table with information about schema options. The SCHEMATA_EXTENSIONS table has these columns: CATALOG_NAME The name of the catalog to which the schema belongs. If ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-limitations-limits.html
Note Bulk loading, TRUNCATE TABLE, and ALTER TABLE are handled as special cases by running multiple transactions, and so are not subject to this limitation. Memory consumed when data is inserted into an NDB table is not automatically recovered when ... In this section, we list limits found in NDB Cluster that either differ from limits found in, or that are not found in, standard ...
https://dev.mysql.com/doc/refman/8.0/en/static-format.html
Static-format tables have these characteristics: CHAR and VARCHAR columns are space-padded to the specified column width, although the column type is not altered. It is used when the table contains no variable-length columns (VARCHAR, VARBINARY, ...
https://dev.mysql.com/doc/refman/8.0/en/archive-storage-engine.html
The ARCHIVE storage engine produces special-purpose tables that store large amounts of unindexed data in a very small footprint. When you create an ARCHIVE table, the storage engine creates files with names that begin with the table name. The ...To ...
https://dev.mysql.com/doc/refman/8.0/en/backup-types.html
This type of backup is suitable for large, important databases that need to be recovered quickly when problems occur. Logical backups save information represented as logical database structure (CREATE DATABASE, CREATE TABLE statements) and content ... This section describes the characteristics of different types of ...
https://dev.mysql.com/doc/refman/8.0/en/blackhole-storage-engine.html
When you create a BLACKHOLE table, the server creates the table definition in the global data dictionary. That is, you can include index declarations in the table definition. Inserts into a BLACKHOLE table do not store any data, but if statement ...
https://dev.mysql.com/doc/refman/8.0/en/bug-reports.html
If a database table is related to the problem, include the output from the SHOW CREATE TABLE db_name.tbl_name statement in the bug report. This is a very easy way to get the definition of any table in a database. You should also include the output ... Before posting a bug report about a problem, please try to verify that it is a bug and that it has not been reported already: Start by searching the MySQL online manual at ...
https://dev.mysql.com/doc/refman/8.0/en/condition-filtering.html
In join processing, prefix rows are those rows passed from one table in a join to the next. In general, the optimizer attempts to put tables with low prefix counts early in the join order to keep the number of row combinations from increasing ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-triggers.html
Can a table have multiple triggers with the same trigger event and action time? A.5.11. Is it possible for a trigger to update tables on a remote server? A.5.12. Information about triggers can be obtained by querying the INFORMATION_SCHEMA.TRIGGERS ...Where can I find the documentation for MySQL 8.0 triggers? ...