Sometimes we need to add ulterior constraints to the table we define. The ALTER TABLE statement enables us to do this. There are several types of constraints we can add. If we want to ensure that all ...

The term "data integrity" can mean different things to different people, but the most difficult and pervasive problem facing organizations these days is the semantic integrity of the data. As ...

With this option validating the existing data against this constraint is skipped, which is very useful for large tables. When parsing this type of SQL with sqlglot it says: 'ALTER TABLE tested_table ...