ECL (Enterprise Control Language) is a C++ based query language for use with HPCC Systems Big Data platform. ECLs syntax and format is very simple and easy to learn. // Schema to use on data Layout_Person := RECORD UNSIGNED1 PersonID; STRING15 FirstName; STRING25 LastName; END; //Calling the data to be used. Similar to USE DATABASE; (SQL) //Example inline data allPeople := DATASET([ {1,'Fred','Smith'},{2,'Joe','Blow'},{3,'Jane','Smith'}],Layout_Person); //FILTER by Lastname somePeople := allPeople(LastName = 'Smith'); // Outputs --- OUTPUT(somePeople);   Hadoop Pig Note – ECL is very similar to Hadoop’s pig ,but more expressive and feature rich.Array Array