How do I check if a SQL Server text column is empty?

Question

I am using SQL Server 2005. I have a table with a text column and I have many rows in the table where the value of this column is not null, but it is empty. Trying to comp

Answer 1

Use DATALENGTH method, for example:

SELECT length = DATALENGTH(myField)
FROM myTABLE

Answer 2

where datalength(mytextfield)=0

Answer 3

SELECT * FROM TABLE
WHERE ISNULL(FIELD, '')=''

Answer 4

To get only empty values (and not null values):

SELECT * FROM myTable WHERE myColumn = ''

To get both null and empty values:

SELECT * FROM myTable WHERE myColumn IS NULL OR myColumn = ''

To get only null values:

SELECT * FROM myTable WHERE myColumn IS NULL

To get values other than null and empty:

SELECT * FROM myTable WHERE myColumn <> ''

And remember use LIKE phrases only when necessary because they will degrade performance compared to other types of searches.