plpgsql - syntax error when running postgresql function/stored procedure -

trying perform set of complex postgresql db operations using function, simple function gets me error:

error:  syntax error @ or near "text" line 3:    tmp text := info;                ^

here sql

create or replace function createme (info text) returns text $$ declare     tmp text := info; begin    select :tmp end $$ language sql;

any idea why? thx!

you procedure not in sql language, in plpgsql language.

create or replace function createme (info text) returns text $$ declare    tmp text := info; begin   return tmp; end $$ language plpgsql;

select :tmp nonsense in content. functions returns value command return - similar other environments.

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