Hi,

you might want to lowercase the language names in order to be compatible with the case restriction introduced in  9.2.

or add a sentence like

'when using single quotes, the names  are case sensitive (with is lowercase for most (all?) languages).

 

regards,

 

Marc Mamin

 

 

http://www.postgresql.org/docs/9.3/static/sql-createfunction.html

 

lang_name

 

    The name of the language that the function is implemented in.

    Can be SQL, C, internal, or the name of a user-defined procedural language.

    For backward compatibility, the name can be enclosed by single quotes.

 

 

http://www.postgresql.org/docs/current/static/release-9-2.html

 

No longer forcibly lowercase procedural language names in CREATE FUNCTION (Robert Haas)

 

While unquoted language identifiers are still lowercased,

strings and quoted identifiers are no longer forcibly down-cased.

Thus for example CREATE FUNCTION ... LANGUAGE 'C' will no longer work;

it must be spelled 'c', or better omit the quotes.