check null empty sql code example
Example 1: t sql null or empty string
select * from vendor
where isnull(vendor_email,'') = ''
Example 2: how to check if a column is null in sql
SELECT column_name FROM table_name
WHERE column_name IS NULL;
select * from vendor
where isnull(vendor_email,'') = ''
SELECT column_name FROM table_name
WHERE column_name IS NULL;