Question

The following query doesn’t work in T-SQL:

SELECT Balance < Credit
FROM Accounts

with the following error:

There was an error parsing the query. [ Token line number = 2,Token line offset = 23,Token in error = < ]

Balance, Credit and Accounts are all valid table/field names.

Why doesn’t this work?

Answer 1

Because T-SQL (both in SQL Server and SQL Server CE) doesn’t hava a native BOOLEAN data type, and logical expressions can only be used in certain places, like WHERE and JOIN clauses.