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https://dev.mysql.com/doc/refman/5.7/en/join.html
MySQL supports the following JOIN syntax for the table_references part of SELECT statements and multiple-table DELETE and UPDATE statements: table_references: escaped_table_reference [, escaped_table_reference] ... index_hint: { USE {INDEX|KEY} ...
https://dev.mysql.com/doc/refman/5.7/en/load-data-local-security.html
The LOAD DATA statement loads a data file into a table. The statement can load a file located on the server host, or, if the LOCAL keyword is specified, on the client host. In theory, a patched server could tell the client program to transfer a ...
https://dev.mysql.com/doc/refman/5.7/en/merge-table-problems.html
The following are known problems with MERGE tables: MERGE child tables are locked through the parent table. If the parent is a temporary table, it is not locked, and thus the child tables are also not locked; this means that parallel use of the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-replication-schema.html
ndb_apply_status Table ndb_binlog_index Table ndb_replication Table Replication in NDB Cluster makes use of a number of dedicated tables in the mysql database on each MySQL Server instance acting as an SQL node in both the cluster being replicated ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-bulk-data-loading.html
These performance tips supplement the general guidelines for fast inserts in Section 8.2.4.1, “Optimizing INSERT Statements”. When importing data into InnoDB, turn off autocommit mode, because it performs a log flush to disk for every insert.
https://dev.mysql.com/doc/refman/5.7/en/problems-with-null.html
The concept of the NULL value is a common source of confusion for newcomers to SQL, who often think that NULL is the same thing as an empty string ''. For example, the following statements are completely different: mysql> INSERT INTO my_table ...
https://dev.mysql.com/doc/refman/5.7/en/replication-gtids-lifecycle.html
The life cycle of a GTID consists of the following steps: A transaction is executed and committed on the replication source server. This client transaction is assigned a GTID composed of the source's UUID and the smallest nonzero transaction ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-hash.html
Partitioning by HASH is used primarily to ensure an even distribution of data among a predetermined number of partitions. To partition a table using HASH partitioning, it is necessary to append to the CREATE TABLE statement a PARTITION BY HASH ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-limitations.html
This section discusses current restrictions and limitations on MySQL partitioning support. The following constructs are not permitted in partitioning expressions: Stored procedures, stored functions, loadable functions, or plugins. For a list of ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-management-exchange.html
Table nt contains no foreign key references, and no other table has any foreign keys that refer to nt. There are no rows in nt that lie outside the boundaries of the partition definition for p. This condition does not apply if the WITHOUT VALIDATION ...