Sql check if column is null or empty then 0 It does not make any difference whether a field is empty or does contain the nubmer 0. EDIT. [empid]( Aug 6, 2015 · Two Solutions (Column is All NULLs, Column Contains Some NULLs) I have slightly altered your original example in order to provide two solutions: Feb 2, 2024 · To ascertain if a column is empty or null in SQL, use COALESCE(column, '') or column IS NULL OR column = ''. In you first version you have. The situation is almost exactly the same as when you add a NOT NULL column (see Adding a NOT NULL field). SQL Query to Select All If Parameter is NULL. In this case you can't just set a DATETIME to an empty string. But as you mentioned the column is actually a CLOB, you could could check for a not-null but empty CLOB by adding a check for dbms_lob. Let’s take a look at a few examples to illustrate these points. P , case when R. xcbgthkzdjdritcukqmypvxmfrupwuxszxpwhvkbbictpqgmyujwavvpxhddzfmwlkysmoarq