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https://dev.mysql.com/doc/refman/8.0/en/replication-solutions-unexpected-replica-halt.html
From MySQL 8.0, this repository is created by default as an InnoDB table named mysql.slave_relay_log_info. GTID auto-positioning means the replica can reliably identify and retrieve missing transactions, even if there are gaps in the sequence of ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-what-is-new.html
It is also no longer possible to issue a CREATE TABLE statement that refers to a nonexistent tablespace. A database thus created uses the default MySQL Server database properties (such as those as determined by character_set_database and ... The ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-limitations.html
Tables employing user-defined partitioning do not preserve the SQL mode in effect at the time that they were created. Therefore, a change in the SQL mode at any time after the creation of partitioned tables may lead to major changes in the behavior ... This section discusses current restrictions and limitations on MySQL partitioning ...
https://dev.mysql.com/doc/refman/8.0/en/stored-programs-logging.html
The statements used to create and drop procedures, functions, triggers, and events are always safe, and are logged in statement format. To create or alter a stored function, you must have the SET_USER_ID privilege (or the deprecated SUPER ... The ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-search-mecab.html
The MeCab full-text parser plugin is a full-text parser plugin for Japanese that tokenizes a sequence of text into meaningful words. By comparison, the ngram full-text parser tokenizes text into a contiguous sequence of n characters, where n ... The ...
https://dev.mysql.com/doc/refman/8.0/en/charset-binary-collations.html
Binary strings are sequences of bytes and the numeric values of those bytes determine comparison and sort order. The binary collation differs from _bin collations in several respects, discussed in the following sections: The Unit for Comparison and ... This section describes how the binary collation for binary strings compares to _bin collations for nonbinary ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
*/ C-style comment syntax, with a + character following the /* comment opening sequence. Consider this sequence of statements: SET @saved_val = @@SESSION.var_name; SET @@SESSION.var_name = value; SELECT ... SET @@SESSION.var_name = @saved_val; The ... One means of control over optimizer strategies is to set the optimizer_switch system variable (see Section 10.9.2, “Switchable ...
https://dev.mysql.com/doc/refman/8.0/en/alter-table.html
For example, you can add or delete columns, create or destroy indexes, change the type of existing columns, or rename columns or the table itself. To use ALTER TABLE, you need ALTER, CREATE, and INSERT privileges for the table. Renaming a table ...
https://dev.mysql.com/doc/refman/8.0/en/atomic-ddl.html
Supported table DDL statements include CREATE, ALTER, and DROP statements for databases, tablespaces, tables, and indexes, and the TRUNCATE TABLE statement. Supported non-table DDL statements include: CREATE and DROP statements, and, if applicable, ...An atomic DDL statement combines the data dictionary updates, storage engine operations, and binary log writes associated with a DDL operation into a single, atomic ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-fulltext-index.html
Full-text indexes are created on text-based columns (CHAR, VARCHAR, or TEXT columns) to speed up queries and DML operations on data contained within those columns. A full-text index is defined as part of a CREATE TABLE statement or added to an ...