29/04/2015 10:21:54  *****  ERROR DE SISTEMA:   *****  ADMINISTRADOR  *****  CLASE->covensol_release MÉTODO->covensol_release_INS_01_2014 ERROR->Invalid query: ERROR:  no existe el lenguaje «plpgsql»
HINT:  Usar CREATE LANGUAGE para instalar el lenguaje en la base de datos.
Whole query:    
			   			create or replace function reset_sequencia(tabla text,campo text) returns varchar as $$
							declare   
								reg             record;
								reg2             record;
								seq             text;
							begin   
								seq = tabla || '_' || campo || '_seq';
								EXECUTE 'SELECT (COALESCE((SELECT '||campo||' FROM '||tabla||' ORDER BY '||campo||' DESC LIMIT 1),0)) AS valor' INTO reg;    
								if reg.valor=0 then reg.valor = 1; end if;
								SELECT setval(seq,reg.valor) into reg2;
								return reg.valor;
							end; $$
						 LANGUAGE 'plpgsql' VOLATILE STRICT SECURITY DEFINER;