PostgreSQL: Enhancements in 7.4: Performance: Inlining of simple SQL functions
01 CREATE FUNCTION prepid(int) RETURNS text AS ' 02 SELECT ''USER-'' || $1::text;' 03 LANGUAGE 'SQL'; 05 06 SELECT prepid(usrid) as user,email from users; 07 08 SELECT 'USER' || usrid as user,email from users;
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