https://dev.mysql.com/check-table.html
MySQL 8.0 does not support the YEAR(2) data type permitted in older versions of MySQL. For tables containing YEAR(2) columns, CHECK TABLE recommends REPAIR TABLE, which converts YEAR(2) to YEAR(4). option: { FOR UPGRADE | QUICK | FAST | MEDIUM | ...
https://dev.mysql.com/partitioning-linear-hash.html
MySQL also supports linear hashing, which differs from regular hashing in that linear hashing utilizes a linear powers-of-two algorithm whereas regular hashing employs the modulus of the hashing function's value. We call this value V; it can be ...
https://dev.mysql.com/partitioning-subpartitions.html
Consider the following CREATE TABLE statement: CREATE TABLE ts (id INT, purchased DATE) PARTITION BY RANGE( YEAR(purchased) ) SUBPARTITION BY HASH( TO_DAYS(purchased) ) SUBPARTITIONS 2 ( PARTITION p0 VALUES LESS THAN (1990), PARTITION p1 VALUES LESS ... Subpartitioning—also known as composite partitioning—is the further division of each partition in a partitioned ...
https://dev.mysql.com/c-api-prepared-statement-data-structures.html
The year, month, and day elements are used for DATE, DATETIME, and TIMESTAMP values. Prepared statements use several data structures: To obtain a statement handler, pass a MYSQL connection handler to mysql_stmt_init(), which returns a pointer to a ...
https://dev.mysql.com/partitioning-limitations-partitioning-keys-unique-keys.html
This section discusses the relationship of partitioning keys with primary keys and unique keys. The rule governing this relationship can be expressed as follows: All columns used in the partitioning expression for a partitioned table must be part ...
https://dev.mysql.com/control-flow-functions.html
The second syntax returns the result for the first condition that is true. If no comparison or condition is true, the result after ELSE is returned, or NULL if there is no ELSE part. Note The syntax of the CASE expr described here differs slightly ...
https://dev.mysql.com/insert.html
For example, inserting the string '1999.0e-2' into an INT, FLOAT, DECIMAL(10,6), or YEAR column inserts the value 1999, 19.9921, 19.992100, or 1999, respectively. The value stored in the INT and YEAR columns is 1999 because the string-to-number ...
https://dev.mysql.com/sql-mode.html
This may be useful for Web applications that obtain year, month, and day in three different fields and store exactly what the user inserted, without date validation. NO_ZERO_IN_DATE The NO_ZERO_IN_DATE mode affects whether the server permits dates ... The MySQL server can operate in different SQL modes, and can apply these modes differently for different clients, depending on the value of the sql_mode system ...
https://dev.mysql.com/storage-requirements.html
InnoDB Table Storage Requirements NDB Table Storage Requirements Numeric Type Storage Requirements Date and Time Type Storage Requirements String Type Storage Requirements Spatial Type Storage Requirements JSON Storage Requirements The storage ...
https://dev.mysql.com/stored-program-restrictions.html
Event timings using the intervals YEAR, QUARTER, MONTH, and YEAR_MONTH are resolved in months; those using any other interval are resolved in seconds. (Bug #16422) Events do not support times later than the end of the Unix Epoch; this is ... These ...
