![]() However, a superuser can alter ownership of any type anyway.) To add an attribute or alter an attribute type, you must also have USAGE privilege on the data type. (These restrictions enforce that altering the owner doesn't do anything you couldn't do by dropping and recreating the type. To alter the owner, you must also be a direct or indirect member of the new owning role, and that role must have CREATE privilege on the type's schema. To change the schema of a type, you must also have CREATE privilege on the new schema. ![]() For example, it is possible to add several attributes and/or alter the type of several attributes in a single command. The ADD ATTRIBUTE, DROP ATTRIBUTE, and ALTER ATTRIBUTE actions can be combined into a list of multiple alterations to apply in parallel. For a non-existing column- auto-increment constraint for a new column ALTER TABLE public.products ADD COLUMN id SERIAL PRIMARY KEY 2. ![]() The auto-increment is being done for the id column of this table. Refuse the operation if the type being altered is the type of a typed table. Im doing this for a table called products which is present in the public schema. CASCADEĪutomatically propagate the operation to typed tables of the type being altered, and their descendants. Otherwise, an error will occur if the new value is already present. If IF NOT EXISTS is specified, it is not an error if the type already contains the new value: a notice is issued but no other action is taken. Otherwise, the new item is added at the end of the list of values. The new value's place in the enum's ordering can be specified as being BEFORE or AFTER one of the existing values. This form adds a new value to an enum type. This form moves the type into another schema. This form changes the name of the type or the name of an individual attribute of a composite type. This form changes the type of an attribute of a composite type. If IF EXISTS is specified and the attribute does not exist, no error is thrown. This form drops an attribute from a composite type. This form adds a new attribute to a composite type, using the same syntax as CREATE TYPE.
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