How to get mail last 24 hours in sql

To get the last 24 hours' worth of mail in SQL, you can use a combination of date and time functions. The exact syntax may vary depending on the specific database management system you're using (e.g., MySQL, PostgreSQL, SQL Server, etc.).

Here are some examples:

MySQL

SELECT * FROM mail WHERE date_sent >= DATE_SUB(CURRENT_TIMESTAMP, INTERVAL 1 DAY);

PostgreSQL

SELECT * FROM mail WHERE date_sent >= NOW() - INTERVAL '1 day';

SQL Server

SELECT * FROM mail WHERE date_sent >= DATEADD(day, -1, GETDATE());

Oracle

SELECT * FROM mail WHERE date_sent >= SYSTIMESTAMP - INTERVAL '1' DAY;

In each of these examples, we're using a date and time function to get the current timestamp, and then subtracting 1 day from it using an interval or date arithmetic operation. We're then using this result as the upper bound for our query, so that we only retrieve rows where the date_sent column is within the last 24 hours.

Note that the exact syntax may vary depending on the specific database system you're using, so be sure to check the documentation for your particular database management system if you have any questions.