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Select two appropriate statements from below about the following SQL statements:
CREATE FUNCTION myfunc(INTEGER) RETURNS text LANGUAGE plpgsql STRICT AS '
DECLARE x ALIAS FOR $1; r text := ''default''; BEGIN IF x > 100 THEN SELECT INTO r data FROM mytable WHERE id = x; END IF; RETURN r; END;';
I would like to set the default character encoding for the client to Unicode. Select the most appropriate configuration parameter in postgresql.conf from those below.
The following question concerns the use of multibyte characters in PostgreSQL. Select two correct items about character encoding in PostgreSQL.
Select one false statement about the benefits of using database management systems from below.
In the "customer" table, you want to change the "email" values which have an "id" value of 10000 or less, to NULL. Select the correct SQL statement to achieve this task.
