删除MySQL表中的周末数据

Question

I have some tables in MySQL db. My table has date as one of its columns and has data for last one year. I want to delete the data of weekends since that is of no use to me. Is it possible to delete the weekend data from these db tables with an SQL query ?

Answer 1

Try using DAYOFWEEK :

DELETE
FROM yourTable
WHERE DAYOFWEEK(date_col) IN (1, 7);

The above query would target for deletion any record happening to fall on a Saturday (7) or Sunday (1).

Answer 2

There is inbuild function in mysql to find days of week.

delete from table where DAYOFWEEK(date) in (1,7)

where 1 = Sunday, 7 = Saturday