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postgreSQL Adding columns

ALTER TABLE simple_users ADD COLUMN password text;

Adding the same column to the parent table will merge the definition of both columns:

ALTER TABLE users ADD COLUMN password text;

NOTICE: merging definition of column "password" for child "simple_users"

Dropping columns

Using our altered tables:


Since we first added the column to simple_users, PostgreSQL makes sure this column isn't dropped.

Now if we had another child table, its password column would, of course, have been dropped.


In this page (written and validated by ) you learned about postgreSQL Adding columns . What's Next? If you are interested in completing postgreSQL tutorial, your next topic will be learning about: postgreSQL INSERT.

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