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https://dev.mysql.com/doc/refman/8.4/en/information-schema-column-privileges-table.html
The COLUMN_PRIVILEGES table has these columns: GRANTEE The name of the account to which the privilege is granted, in 'user_name'@'host_name' format. IS_GRANTABLE YES if the user has the GRANT OPTION privilege, NO otherwise. TABLE_CATALOG The name of ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-enabled-roles-table.html
The ENABLED_ROLES table has these columns: ROLE_NAME The user name part of the granted role. The ENABLED_ROLES table provides information about the roles that are enabled within the current session. IS_DEFAULT YES or NO, depending on whether the ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-optimizer-trace-table.html
INSUFFICIENT_PRIVILEGES If a traced query uses views or stored routines that have SQL SECURITY with a value of DEFINER, it may be that a user other than the definer is denied from seeing the trace of the query. The OPTIMIZER_TRACE table provides ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-profiling-table.html
Its contents correspond to the information produced by the SHOW PROFILE and SHOW PROFILES statements (see Section 15.7.7.32, “SHOW PROFILE Statement”). The table is empty unless the profiling session variable is set to 1. Note This table is ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-schema-privileges-table.html
The SCHEMA_PRIVILEGES table has these columns: GRANTEE The name of the account to which the privilege is granted, in 'user_name'@'host_name' format. IS_GRANTABLE YES if the user has the GRANT OPTION privilege, NO otherwise. TABLE_CATALOG The name of ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-schemata-table.html
Caution Because any static global privilege is considered a privilege for all databases, any static global privilege enables a user to see all database names with SHOW DATABASES or by examining the SCHEMATA table of INFORMATION_SCHEMA, except ... A ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-table-privileges-table.html
The TABLE_PRIVILEGES table has these columns: GRANTEE The name of the account to which the privilege is granted, in 'user_name'@'host_name' format. IS_GRANTABLE YES if the user has the GRANT OPTION privilege, NO otherwise. TABLE_CATALOG The name of ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-checkpoints.html
There is no need to flush the buffer pool in one single batch, which would disrupt processing of user SQL statements during the checkpointing process. Making your log files very large may reduce disk I/O during checkpointing. It often makes sense ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-information-schema-examples.html
This section describes the use of locking information as exposed by the Performance Schema data_locks and data_lock_waits tables. Identifying Blocking Transactions It is sometimes helpful to identify which transaction blocks another. The tables ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-information-schema-files-table.html
The Information Schema FILES table provides metadata about all InnoDB tablespace types including file-per-table tablespaces, general tablespaces, the system tablespace, temporary table tablespaces, and undo tablespaces (if present). For more ...