How to find records in MySQL that do not have any matching values

In MySQL, you can find records that don’t have a matching value by using a LEFT JOIN statement and the IS NULL condition. Here is an example:

Assuming there are two tables, table1 and table2, now we need to find records in table1 that do not match with table2. This can be done by following these steps:

1. Merge two tables based on a common key, including all records from the first table and only matching records from the second table.

SELECT table1.*
FROM table1
LEFT JOIN table2 ON table1.id = table2.id

1. has no value

SELECT table1.*
FROM table1
LEFT JOIN table2 ON table1.id = table2.id
WHERE table2.id IS NULL

By performing the above operation, you can find records in table1 that do not have a match.