Delete row from mysql table where value not like

Question

I have a table that has the results of tests.
It looks like:

Test    | Result
Math    | Pass
Science | Fail
History | cancelled
French  | Absent

The table is named table1. I want to delete rows in the table where the value of the column result is not "Pass" or "fail"

Something like:

Delete from table1
where result not in (Pass, Fail);

The resulting table would look like:

Test    | Result
Math    | Pass
Science | Fail

Answer 1

尝试这个：

DELETE FROM table1 WHERE result NOT IN ('Pass', 'Fail');

Answer 2

Your example worked for me by adding quotes around Pass and Fail .

delete from table1
where result not in ('Pass', 'Fail')