https://dev.mysql.com/date-and-time-functions.html
For example: mysql> SELECT DAYOFMONTH('2001-11-00'), MONTH('2005-00-00'); -> 0, 0 Other functions expect complete dates and return NULL for incomplete dates. The return value depends on the arguments: DATE if the date argument is a DATE value and ...
https://dev.mysql.com/date-calculations.html
What if you want to know which animals have birthdays next month? For this type of calculation, year and day are irrelevant; you simply want to extract the month part of the birth column. MySQL provides several functions for extracting parts of ...
https://dev.mysql.com/expressions.html
This section lists the grammar rules that expressions must follow in MySQL and provides additional information about the types of terms that may appear in expressions. Expression Syntax Expression Term Notes Temporal Intervals The following grammar ...
https://dev.mysql.com/calculating-days.html
The following example shows how you can use the bit group functions to calculate the number of days per month a user has visited a Web page. CREATE TABLE t1 (year YEAR(4), month INT UNSIGNED, day INT UNSIGNED); INSERT INTO t1 ...
https://dev.mysql.com/func-op-summary-ref.html
GTID_SUBTRACT() Return all GTIDs in set that are not in subset. JSON_CONTAINS() Whether JSON document contains specific object at path JSON_CONTAINS_PATH() Whether JSON document contains any data at path JSON_DEPTH() Maximum depth of JSON document ...
https://dev.mysql.com/date-and-time-types.html
Although MySQL tries to interpret values in several formats, date parts must always be given in year-month-day order (for example, '98-09-04'), rather than in the month-day-year or day-month-year orders commonly used elsewhere (for example, ... The ...
https://dev.mysql.com/date-and-time-literals.html
For example, '20070523' and '070523' are interpreted as '2007-05-23', but '071332' is illegal (it has nonsensical month and day parts) and becomes '0000-00-00'. For values specified as strings that include date part delimiters, it is unnecessary to ... Date and time values can be represented in several formats, such as quoted strings or as numbers, depending on the exact type of the value and other ...
https://dev.mysql.com/sql-mode.html
Check only that the month is in the range from 1 to 12 and the day is in the range from 1 to 31. 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 ...
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/using-date.html
If you enable the ALLOW_INVALID_DATES SQL mode, MySQL permits you to store dates that are given only limited checking: MySQL requires only that the day is in the range from 1 to 31 and the month is in the range from 1 to 12. This makes MySQL very ...
