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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-socket-instances-table.html
Instrument names may have multiple parts and form a hierarchy, as discussed in Section 25.6, “Performance Schema Instrument Naming Conventions”. The socket_instances table provides a real-time snapshot of the active connections to the MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/sys-schema-index-statistics.html
The schema_index_statistics and x$schema_index_statistics views have these columns: table_schema The schema that contains the table. select_latency The total wait time of timed reads using the index. insert_latency The total wait time of timed ...
https://dev.mysql.com/doc/refman/5.7/en/sys-schema-table-statistics-with-buffer.html
The schema_table_statistics_with_buffer and x$schema_table_statistics_with_buffer views have these columns: table_schema The schema that contains the table. These views summarize table statistics, including InnoDB buffer pool statistics. By ...
https://dev.mysql.com/doc/refman/5.7/en/sys-schema-table-statistics.html
The schema_table_statistics and x$schema_table_statistics views have these columns: table_schema The schema that contains the table. By default, rows are sorted by descending total wait time (tables with most contention first). total_latency The ...
https://dev.mysql.com/doc/refman/5.7/en/sys-schema-tables-with-full-table-scans.html
The schema_tables_with_full_table_scans and x$schema_tables_with_full_table_scans views have these columns: object_schema The schema name. These views display which tables are being accessed with full table scans. rows_full_scanned The total number ...
https://dev.mysql.com/doc/refman/5.7/en/system-schema.html
It contains tables that store information required by the MySQL server as it runs. Warning Do not convert MySQL system tables in the mysql database from MyISAM to InnoDB tables. If you do this, MySQL does not restart until you restore the old system ...
https://dev.mysql.com/doc/refman/5.7/en/charset-collation-information-schema.html
String columns in INFORMATION_SCHEMA tables have a collation of utf8_general_ci, which is case-insensitive. However, for values that correspond to objects that are represented in the file system, such as databases and tables, searches in ...For ...
https://dev.mysql.com/doc/refman/5.7/en/connection-control-information-schema-tables.html
The following sections describe the INFORMATION_SCHEMA tables associated with the connection_control plugin.
https://dev.mysql.com/doc/refman/5.7/en/faqs-information-schema.html
Where can I find documentation for the MySQL INFORMATION_SCHEMA database? A.7.2. Where can I find the ANSI SQL 2003 specification for INFORMATION_SCHEMA? A.7.4. What is the difference between the Oracle Data Dictionary and MySQL INFORMATION_SCHEMA? ...You may also find the MySQL User Forums to be ...
https://dev.mysql.com/doc/refman/5.7/en/firewall-information-schema-tables.html
The following sections describe the INFORMATION_SCHEMA tables associated with MySQL Enterprise Firewall (see Section 6.4.6, “MySQL Enterprise Firewall”). These tables are available only if the appropriate firewall plugins are enabled.