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https://dev.mysql.com/doc/refman/8.0/en/example-foreign-keys.html
To demonstrate ON DELETE and ON UPDATE referential actions, drop the child table and recreate it to include ON UPDATE and ON DELETE subclauses with the CASCADE option. MySQL supports foreign keys, which permit cross-referencing related data across ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-quick-start.html
To see the structure of individual tables, use SHOW CREATE TABLE: mysql> SHOW CREATE TABLE performance_schema.setup_consumers\G *************************** 1. row *************************** Table: setup_consumers Create Table: CREATE TABLE ...The ... This section briefly introduces the Performance Schema with examples that show how to use ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-operations-per-fragment.html
This currently has the following formats: Base table: DbName/def/TblName BLOB table: DbName/def/NDB$BLOB_BaseTblId_ColNo Ordered index: sys/def/BaseTblId/IndexName Unique index: sys/def/BaseTblId/IndexName$unique The $unique suffix shown for unique ... The operations_per_fragment table provides information about the operations performed on individual fragments and fragment replicas, as well as about some of the results from these ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-st-spatial-reference-systems-table.html
The ST_SPATIAL_REFERENCE_SYSTEMS table provides information about available spatial reference systems (SRSs) for spatial data. Entries in the ST_SPATIAL_REFERENCE_SYSTEMS table are based on the European Petroleum Survey Group (EPSG) data set, ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-columns-extensions-table.html
The COLUMNS_EXTENSIONS table (available as of MySQL 8.0.21) provides information about column attributes defined for primary and secondary storage engines. The COLUMNS_EXTENSIONS table has these columns: TABLE_CATALOG The name of the catalog to ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-connection-control-table-reference.html
Table 28.8 INFORMATION_SCHEMA Connection Control Tables Table Name Description CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS Current number of consecutive failed connection attempts per account .
https://dev.mysql.com/doc/refman/8.0/en/information-schema-firewall-table-reference.html
Table 28.9 INFORMATION_SCHEMA Firewall Tables Table Name Description Deprecated MYSQL_FIREWALL_USERS Firewall in-memory data for account profiles 8.0.26 MYSQL_FIREWALL_WHITELIST Firewall in-memory data for account profile allowlists 8.0.26 .
https://dev.mysql.com/doc/refman/8.0/en/information-schema-thread-pool-table-reference.html
Table 28.7 INFORMATION_SCHEMA Thread Pool Tables Table Name Description TP_THREAD_GROUP_STATE Thread pool thread group states TP_THREAD_GROUP_STATS Thread pool thread group statistics TP_THREAD_STATE Thread pool thread information .
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-documents-in-tables.html
In MySQL, a table may contain traditional relational data, JSON values, or both. Examples in this section use the city table in the world_x schema. city Table Description The city table has five columns (or fields). You can combine traditional data ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-documents-in-tables.html
In MySQL, a table may contain traditional relational data, JSON values, or both. Examples in this section use the city table in the world_x schema. city Table Description The city table has five columns (or fields). You can combine traditional data ...