I'm talking about the Oracle and Informix (perhaps some others too) function used to filter out non NULL values from query results (similar to COALESCE in other ... ... <看更多>
oracle nvl 在 Ruby version of Oracle's NVL() and Postgres' COALESCE() 的推薦與評價
def first_non_nil(*args). self.each do |element|. return element unless element.nil? end. nil. end. # Alias for the Oracle folks. def nvl. first_non_nil. ... <看更多>
oracle nvl 在 Oracle DECODE vs. NVL - Stack Overflow 的推薦與評價
... <看更多>