pg_field_type() returns a string containing the
base type name of the given
field_number in the
Note: If the field uses a PostgreSQL domain (rather than a basic type), it is the name of the domain's underlying type that is returned, rather than the name of the domain itself.
Note: This function used to be called pg_fieldtype().
A string containing the base name of the field's type, or FALSE on error.
Example 1. Getting information about fields
The above example will output: