https://dev.mysql.com/mysql-cluster-replication-conflict-resolution.html
When using a replication setup involving multiple masters (including circular replication), it is possible that different masters may try to update the same row on the slave with different data. Conflict resolution in NDB Cluster Replication ...
https://dev.mysql.com/bit-functions.html
(The BIT_AND(), BIT_OR(), and BIT_XOR() aggregate functions are described in Section 12.20.1, “Aggregate (GROUP BY) Function Descriptions”.) Prior to MySQL 8.0, bit functions and operators required BIGINT (64-bit integer) arguments and returned ...
https://dev.mysql.com/silent-column-changes.html
In some cases, MySQL silently changes column specifications from those given in a CREATE TABLE or ALTER TABLE statement. These might be changes to a data type, to attributes associated with a data type, or to an index specification. All changes are ...
https://dev.mysql.com/replication-features-differing-tables.html
Source and target tables for replication do not have to be identical. A table on the master can have more or fewer columns than the slave's copy of the table. In addition, corresponding table columns on the master and the slave can use different ...
https://dev.mysql.com/charset-conversion.html
To convert a binary or nonbinary string column to use a particular character set, use ALTER TABLE. For successful conversion to occur, one of the following conditions must apply: If the column has a binary data type (BINARY, VARBINARY, BLOB), all ...
https://dev.mysql.com/static-format.html
It is used when the table contains no variable-length columns (VARCHAR, VARBINARY, BLOB, or TEXT). Of the three MyISAM storage formats, static format is the simplest and most secure (least subject to corruption). It is also the fastest of the ...
https://dev.mysql.com/create-index.html
CREATE [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name [index_type] ON tbl_name (key_part,...) [index_option] [algorithm_option | lock_option] ... This guideline is especially important for InnoDB tables, where the primary key determines the ...
https://dev.mysql.com/group-by-functions.html
This section describes group (aggregate) functions that operate on sets of values. If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. For more information, see Section 12.20.3, ...
https://dev.mysql.com/blob.html
A BLOB is a binary large object that can hold a variable amount of data. These differ only in the maximum length of the values they can hold. These correspond to the four BLOB types and have the same maximum lengths and storage requirements. They ...
https://dev.mysql.com/c-api-data-structures.html
This section describes C API data structures other than those used for prepared statements, the asychronous interface, or the replication stream interface. For information about those, see Section 28.7.9, “C API Prepared Statement Data ...
