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You want to use STR_TO_DATE to first convert the incorrect string to a real date object, then use DATE_FORMAT to turn it back into a string of the format you want. Also, your WHERE condition won't work like that.
22 wrz 2023 · Here, I’ll walk you through how to change datetime formats in MySQL. Firstly, let’s understand what we’re dealing with. The default format for DATETIME in MySQL is ‘YYYY-MM-DD HH:MM:SS’. But say you’ve got data from an external source that doesn’t match this format – it can throw your entire database out of sync.
In a MySQL database, the DATE_FORMAT() function allows you to display date and time data in a changed format. This function takes two arguments. The first is the date/datetime to be reformatted; this can be a date/time/datetime/timestamp column or an expression returning a value in one of these data types.
The format of a DATE value is 'YYYY-MM-DD'. According to standard SQL, no other format is permitted. You should use this format in UPDATE expressions and in the WHERE clause of SELECT statements. For example: SELECT * FROM t1 WHERE date >= '2003-05-05';
This tutorial shows you how to use the MySQL DATE_FORMAT function to format a date value based on a specific format.
MySQL Date Data Types. MySQL comes with the following data types for storing a date or a date/time value in the database: DATE - format YYYY-MM-DD; DATETIME - format: YYYY-MM-DD HH:MI:SS; TIMESTAMP - format: YYYY-MM-DD HH:MI:SS; YEAR - format YYYY or YY; Note: The date data type are set for a column when you create a new table in your database!
The MySQL UPDATE Statement. The UPDATE statement is used to modify the existing records in a table. UPDATE Syntax
