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https://dev.mysql.com/doc/refman/8.0/en/mysql-nutshell.html
MySQL now enables administrators to configure user accounts such that too many consecutive login failures due to incorrect passwords cause temporary account locking. The required number of failures and the lock time are configurable per account. A ... This section summarizes what has been added to, deprecated in, and removed from MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-parameters.html
innodb_api_disable_rowlock Command-Line Format --innodb-api-disable-rowlock[={OFF|ON}] Deprecated 8.0.22 System Variable innodb_api_disable_rowlock Scope Global Dynamic No SET_VAR Hint Applies No Type Boolean Default Value OFF Use this option to ...
https://dev.mysql.com/doc/refman/8.0/en/general-thread-states.html
If the thread is locked by some other thread, the kill takes effect as soon as the other thread releases its lock. Locking system tables The thread is trying to lock a system table (for example, a time zone or log table). For example, an ALTER TABLE ... The following list describes thread State values that are associated with general query processing and not more specialized activities such as ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-performance.html
Reduced locking and waiting for MySQL server resources leads to greater scalability, even for operations that are not involved in the DDL operation. An exclusive metadata lock on the table may be taken briefly during the execution phase of the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-operations.html
Renaming an index ALTER TABLE tbl_name RENAME INDEX old_index_name TO new_index_name, ALGORITHM=INPLACE, LOCK=NONE; Adding a FULLTEXT index CREATE FULLTEXT INDEX name ON table(column); Adding the first FULLTEXT index rebuilds the table if there is ... Online support details, syntax examples, and usage notes for DDL operations are provided under the following topics in this ...
https://dev.mysql.com/doc/refman/8.0/en/version-tokens-usage.html
Another set of functions permits version tokens to be locked and unlocked. Version Tokens also includes a set of functions enabling tokens to be locked and unlocked: version_tokens_lock_exclusive() acquires exclusive version token locks. It takes a ... Before using Version Tokens, install it according to the instructions provided at Section 7.6.6.2, “Installing or Uninstalling Version ...
https://dev.mysql.com/doc/refman/8.0/en/select.html
[WITH ROLLUP]] [LIMIT {[offset,] row_count | row_count OFFSET offset}] [into_option] [FOR {UPDATE | SHARE} [OF tbl_name [, tbl_name] ...] [NOWAIT | SKIP LOCKED] | LOCK IN SHARE MODE] [into_option] into_option: { INTO OUTFILE 'file_name' [CHARACTER ... SELECT [ALL | DISTINCT | DISTINCTROW ] [HIGH_PRIORITY] [STRAIGHT_JOIN] [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT] [SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS] select_expr [, select_expr] ...
https://dev.mysql.com/doc/refman/8.0/en/alter-user.html
[REQUIRE {NONE | tls_option [[AND] tls_option] ...}] [WITH resource_option [resource_option] ...] [password_option | lock_option] ... Following the user specifications, the statement may include options for SSL/TLS, resource-limit, ... ALTER USER ...
https://dev.mysql.com/doc/refman/8.0/en/create-user.html
[REQUIRE {NONE | tls_option [[AND] tls_option] ...}] [WITH resource_option [resource_option] ...] [password_option | lock_option] ... Following the user specifications, the statement may include options for SSL/TLS, resource-limit, ... CREATE USER ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-trx-table.html
The INNODB_TRX table provides information about every transaction currently executing inside InnoDB, including whether the transaction is waiting for a lock, when the transaction started, and the SQL statement the transaction is executing, if any.