PostgreSQL/Postgre SQL/plpgsql

plpgsql is case insensitive

postgres=# CREATE FUNCTION "mixed" () RETURNS integer AS "
postgres"#        DecLarE
postgres"#           --assigns 1 to the oNe variable
postgres"#           oNe IntEgER
postgres"#           := 1;
postgres"#
postgres"#        bEGiN
postgres"#
postgres"#           --displays the value of oNe
postgres"#           ReTUrn oNe;
postgres"#        eNd;
postgres"#        " LANGUAGE "plpgsql";
CREATE FUNCTION
postgres=#
postgres=# select mixed();
 mixed
-------
     1
(1 row)
postgres=#