Is not null sql Example - Using IS NOT NULL with the SELECT Statement. Mar 18, 2014 · OP is asking about only rows that have something in the phone2 field. Eğer bir tabloda NULL değer içeren kayıtlar bulunmak isteniyorsa sorguda IS NULL ifadesi kullanılır. You can test for NULL values using the IS NULL and IS NOT NULL operators instead. A NULL value is a special marker in column to denote that a value does not exist. The IS NOT NULL operator returns 1 if the expression or column is not NULL, and 0 if the expression or column is NULL. Instead, you need to use the IS NULL or IS NOT NULL operators to check for NULL values. The predicate reverses its return values, returning TRUE if the value is not NULL, and FALSE if the value is NULL. This operator works opposite to the IS NULL operator, returning TRUE for rows where the value is not NULL. In this tutorial, you will learn about the SQL NOT NULL constraint with the help of examples. ngkuddwmmvlxsebscysezjhlnzgwxlsfqevljozktcgbtzfcbumusvcovmimcmnzyeexiesysi