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You should be looking for strings of the wrong format using LIKE. UPDATE your_table SET date_field = DATE_FORMAT(STR_TO_DATE(date_field, '%m/%d/%y'), '%Y/%m/%d') WHERE date_field LIKE '__/__/____'
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'; As a convenience, MySQL automatically converts a date to a number if the date is used in numeric context and vice versa.
22 wrz 2023 · Thankfully, MySQL provides built-in functions to help us manipulate date and time data. To start off with, the DATE_FORMAT () function comes particularly handy. Imagine having a date like ‘2022-03-12 18:30:45’ and needing it to display as ‘March 12th, 2022’. You’d use DATE_FORMAT () like so:
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.
Here is an example that uses date functions. The following query selects all rows with a date_col value from within the last 30 days: . mysql> SELECT something FROM tbl_name-> WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= date_col;. The query also selects rows with dates that lie in the future.
This tutorial shows you how to use the MySQL DATE_FORMAT function to format a date value based on a specific format.
25 lut 2012 · You can store it in column having data type as CHAR(8) and then use following UPDATE query: UPDATE table_name. SET date_column = DATE_FORMAT(date_column, '%y-%m-%d'); but better approach would be to store it in DATE format only and use DATE_FORMAT function while retrieving the data from table.
