In PostgreSQL, the ALTER FUNCTION statement is used to modify the definition of an existing function. It allows you to change various attributes and behaviors of a function without having to drop and recreate it. This can be useful when you...
The DROP FUNCTION statement in PostgreSQL is used to remove a user-defined function from the database. This statement permanently deletes the function and all its associated objects, such as triggers or rules. Syntax The syntax for the DROP FUNCTION statement is...
In PostgreSQL, the ALTER TRIGGER statement allows you to modify the properties of an existing trigger. Triggers are special database objects that are associated with a table and are automatically executed in response to specific events, such as inserts, updates, or...
Drop postgresql trigger How to drop trigger, syntax and example. Syntax DROP TRIGGER [ IF EXISTS ] name ON table_name [ CASCADE | RESTRICT ]; Example – Drop postgresql trigger DROP TRIGGER IF EXISTS customers_trigger ON customers CASCADE; DROP TRIGGER IF...
Create postgresql type Create table type, alter and drop type. Syntax and examples. Syntax CREATE TYPE type_name AS ( attribute_name_1 data_type, attribute_name_2 data_type, ... attribute_name_n data_type ); CREATE TYPE type_name AS ENUM ( [ 'label' [, ... ] ] ); Example...