DO — execute an anonymous code block
DO [ LANGUAGE
DO executes an anonymous code block, or in other words a transient anonymous function in a procedural language.
The code block is treated as though it were the body of a function with no parameters, returning
void. It is parsed and executed a single time.
LANGUAGE clause can be written either before or after the code block.
The procedural language code to be executed. This must be specified as a string literal, just as in
CREATE FUNCTION. Use of a dollar-quoted literal is recommended.
The name of the procedural language the code is written in. If omitted, the default is
The procedural language to be used must already have been installed into the current database by means of
plpgsql is installed by default, but other languages are not.
The user must have
USAGE privilege for the procedural language, or must be a superuser if the language is untrusted. This is the same privilege requirement as for creating a function in the language.
DO is executed in a transaction block, then the procedure code cannot execute transaction control statements. Transaction control statements are only allowed if
DO is executed in its own transaction.
Grant all privileges on all views in schema
public to role
DO $$DECLARE r record; BEGIN FOR r IN SELECT table_schema, table_name FROM information_schema.tables WHERE table_type = 'VIEW' AND table_schema = 'public' LOOP EXECUTE 'GRANT ALL ON ' || quote_ident(r.table_schema) || '.' || quote_ident(r.table_name) || ' TO webuser'; END LOOP; END$$;
There is no
DO statement in the SQL standard.