Is not null sql oracle Look at the following "Products" table: Suppose that the "UnitsOnOrder" column is optional, and may contain NULL values. The idea of having nulls in a relational database is controversial, but Oracle Database May 19, 2015 · In ANSI SQL, null || 'str' gives null. i want query both values. Since all rows from t_left should be examined, Oracle decided to use a HASH ANTI JOIN to do this: a hash table is built over the values from t_right, eliminating duplicates, and every row from t_left is searched for in the hash Nulls in SQL Functions . Query: select l. Sep 22, 2011 · So the Procedure works just fine as long as p_DrumNo is NULL or I modify the above to not check if p_DrumNo is NULL; (T_ORDER. V_PKGXMLCODE WHERE (CATALOG <> 0 AND CATALOG <> 2) AND (NOT (CHILD IS NULL)); takes less than one second. CASE s. Note: To compare if your value is not null, you use IS NOT NULL, while to compare with not null value, you use <> 'YOUR_VALUE'. > Oracle Database currently treats a character value with a length of zero as null. fjyitzejubrybjjfhqpzaxrlhppfhgqheztfdvabchmtgbritmkxlitrqgsm