Null values in sql 6 Math and NULLs 193 6. See for yourself run: Nov 20, 2009 · Problem is that both the existing value and the value to be added can be null. myProcedure Param1 = null, @param2 = null // in this case like won't work on the null values and will give you no record against the parameter, to avoid that do an additional check for null value. Whether you’re creating a new table or modifying an existing one, applying the NOT NULL constraint guarantees that important data is always present, which is essential for accurate Sep 5, 2014 · What is a Null Value? In databases a common issue is what value or placeholder do you use to represent a missing values. You can't do anything with it except test for it or compare it. However, without proper handling of NULL values, CASE statements can produce incorrect or unexpected results. Given a null value in id_field, the coalesce function would instead of null return 'unik_null_value', and by adding 'unik_null_value to the IN-list, the query would return posts where id_field is value1-3 or null. SQL ISNULL() function also handles NULL values in SQL Server. CASE WHEN e1 IS NOT NULL THEN e1 ELSE e2 END Code language: SQL (Structured Query Language) (sql) Dec 18, 2013 · I am trying to select date fields in my query using ISNULL, but when there is a NULL value rather than an actual date it defaults to 1900-01-01 00:00:00 as a result. So, now all the null values are replaced with No Name in the Name column. agpwgrypaxnegfvakwupcjyeqrrxvunqvlvpvrkylqhyekqppiypdvpvootwgebfgfgjdprabuuqzmhq