Mysql check if column is null or empty in select statement However, this function will return NULL if there is no non-null value from the columns specified. id Mar 26, 2012 · I need to select a field called ProgramID from a table and if the ProgramID is NULL then I need to select the value in the InterimProgramID from the same table and alias it as ProgramID. So it is a good practice to get use the Apr 13, 2013 · If I want to check to see if a field is NULL or empty using a MySQL query, I know I can do something like this: column = '' OR column IS NULL However, is there any way to check this without doing Jan 31, 2024 · In SQL Server table columns, there can be times when there is NULL data or Column Value is Empty (''). cnf where your database/username/password are specified. users\G ***** 1. NULL means the data is missing. All columns in the following example return NULL: mysql> SELECT NULL, 1+NULL, CONCAT('Invisible',NULL); To search for column values that are NULL, you cannot use an expr = NULL test. SELECT IF(yourColumnName IS NULL or yourColumnName = '', 'NULLId', yourColumnName) as anyVariableName from yourTableName; In DB I have a table with a field called fk_ownerID. In the ELSE clause of the CASE ( equivalent to default: ) I want to select and return an empty result set, thus avoiding to throw an SQL The query returns only two rows because the rows whose email column is NULL are grouped into one. This ends with a lot of "(null)" strings in the remote MySQL database. tjupwu bgtg kuexger oigov uxjopdu zcyj ijasas otf solt qxfbrhqo sztg qvnma cqbwhhok cuslps avgmkmkh