Create postgresql user Create database user, alter user password and drop username. Rename, modify user. Syntax CREATE USER user_name; Example CREATE USER user_test; Alter postgresql user Syntax ALTER USER user_name [ [ WITH ] option [ ... ] ] where option...
Alter postgresql table Alter table. Modify column name or column data type. Drop column. Disable constraint or trigger Syntax ALTER TABLE [ IF EXISTS ] [ ONLY ] table_name RENAME [ COLUMN ] column_name TO new_column_name; ALTER TABLE [ IF EXISTS...
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...
