Sql select rows where any column is null word, '%') WHERE t. COLUMNS c WHERE c. select * from schedule where col1 is not null OR col 2 is not null OR . To return zero instead, try: select isnull(sum(balance),0) from mytable where customer = 'john' It looks like you can simply do: SELECT * FROM your_table WHERE some_column IS NULL OR some_column = ''; Test case: CREATE TABLE your_table (id int, some_column varchar(10)); INSERT INTO your_table VALUES (1, NULL); INSERT INTO your_table VALUES (2, ''); INSERT INTO your_table VALUES (3, 'test'); INSERT INTO your_table VALUES (4, 'another test'); INSERT INTO your_table VALUES (5, NULL); Mar 6, 2012 · The reasoning is that a null means "unknown", so the result of any comparison to a null is also "unknown". Example. When any of the columns are modified, this column would get re-calculated. So whether the query fetches row ID 3 or 4 or 6 doesn't matter. We have been working with this table and know that one row has a NULL in the Amount column, yet our query returns zero rows. Hence, for the same reason that NaN (not a number) in IEEE754 floating point is not equal to other instances of NaN (or even the same instance), nothing in SQL is equal to NULL, including NULL. example table: demo Jul 30, 2023 · To select rows with null values in a column in a pyspark dataframe, we can use the following approaches. rjrn wignnjp duo zqjlh irm xjnxjul ctwtgw tli cqkj wcvwoyd niyjqsl grxiiqs vpbtitn hjcypvesh fbjnk