Left Shifts When shifting left, the most-significant bit is lost, and a 00 bit is inserted on the other end. The left shift operator is usually written as "<<". 0010 << 1 → 0100 0010 << 2 → 1000 A single left shift multiplies a binary number by 2: 0010 << 1 → ...
This distribution style ensures that all the rows required for any join are available on every node, but it multiplies storage requirements and increases the load and maintenance times for the table. ALL distribution can improve execution time when used with certain dimension tables where KEY ...