How to Change Date and Time Formats in SQL

To change the date and time formats in your SQL database, use the CONVERT function. This function takes three arguments: the value you want to convert, the data type you want to convert it to, and the desired format. For example, if you wanted to convert a date to the format YYYY-MM-DD, you would use the following query:

SELECT CONVERT(date, value, 'YYYY-MM-DD') FROM table_name;

Examples

Let's look at a few examples of how this function can be used. Suppose you have a table called events with the following data:

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If you wanted to convert the date and time to the format YYYY-MM-DD HH:MM, you would use the following query:

SELECT CONVERT(varchar, date, 'YYYY-MM-DD') + ' ' + CONVERT(varchar, time, 'HH:MM') FROM events;

This query would return the result 2020-01-01 10:00, 2020-02-01 11:00, 2020-03-01 12:00.

Additional Info

The CONVERT function is supported by most major databases, including MySQL, PostgreSQL, and SQL Server. However, the syntax may vary slightly depending on the database you are using. For more information, check out the documentation for your particular database.