Case insensitive
postgres=# postgres=# CREATE FUNCTION "first" () RETURNS integer AS ' postgres'# DecLarE postgres'# oNe IntEgER := 1; postgres'# bEGiN postgres'# ReTUrn oNE; postgres'# eNd; postgres'# ' LANGUAGE 'plpgsql'; CREATE FUNCTION postgres=# postgres=# select first(); first ------- 1 (1 row) postgres=#