SQL joins are combine rows from two or more sql tables. Most Common join is : SQL INNER JOIN(Simple join). it returns all the rows from multiple tables where the join conditions met. Let’s view at a selection from the “smitcky_order” table: ID Cust_id Date 1000 1 2013-01-01 2000 5 2013-01-02 3000 10 2013-01-03 then,