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https://dev.mysql.com/doc/refman/8.0/en/help.html
HELP 'search_string' The HELP statement returns online information from the MySQL Reference Manual. Its proper operation requires that the help tables in the mysql database be initialized with help topic information (see Section 7.1.17, ...
https://dev.mysql.com/doc/refman/8.0/en/information-functions.html
LAST_INSERT_ID(), LAST_INSERT_ID(expr) With no argument, LAST_INSERT_ID() returns a BIGINT UNSIGNED (64-bit) value representing the first automatically generated value successfully inserted for an AUTO_INCREMENT column as a result of the most ...It ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-columns-table.html
PRTYPE The InnoDB “precise type”, a binary value with bits representing MySQL data type, character set code, and nullability. For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object Tables”.
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-foreign-table.html
TYPE A collection of bit flags with information about the foreign key column, ORed together. For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object Tables”. The INNODB_FOREIGN table has these ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-indexes-table.html
TYPE A numeric value derived from bit-level information that identifies the index type. For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object Tables”. The INNODB_INDEXES table has these ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-tables-table.html
FLAG A numeric value that represents bit-level information about table format and storage characteristics. For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object Tables”. The INNODB_TABLES table ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-tablespaces-brief-table.html
FLAG A numeric value that represents bit-level information about tablespace format and storage characteristics. The INNODB_TABLESPACES_BRIEF table provides space ID, name, path, flag, and space type metadata for file-per-table, general, undo, and ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-tablespaces-table.html
FLAG A numeric value that represents bit-level information about tablespace format and storage characteristics. The INNODB_TABLESPACES table provides metadata about InnoDB file-per-table, general, and undo tablespaces. For related usage information ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-buffer-pool.html
On 64-bit systems with sufficient memory, you can split the buffer pool into multiple parts to minimize contention for memory structures among concurrent operations. The buffer pool is an area in main memory where InnoDB caches table and index data ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-init-startup-configuration.html
Warning On 32-bit GNU/Linux x86, if memory usage is set too high, glibc may permit the process heap to grow over the thread stacks, causing a server failure. The first decisions to make about InnoDB configuration involve the configuration of data ...