PostgreSQL Alter Table Change Column Type

The RazorSQL alter table tool includes a Change Column Type option for changing the data types of columns on PostgreSQL database tables. The change column type function allows the user to choose a new type, a new length, and a new scale if appropriate for the data type chosen. The tool then generates the appropriate alter table alter column SQL command for changing the data type of the column on the table.

Listed below is an example of the SQL generated by the PostgreSQL Alter Table Change Column Type function:

ALTER TABLE sample.public.employee ALTER COLUMN ssn TYPE char(25)

Below is a screen shot of the change column type function of the PostgreSQL alter table tool.

PostgreSQL Change Column Type