Integer data type 1, 0, or NULL.
Remarks
Microsoft® SQL Server™ optimizes the storage used for bit columns. If there are 8 or fewer bit columns in a table, the columns are stored as 1 byte. If there are from 9 through 16 bit columns, they are stored as 2 bytes, and so on.
See Also
ALTER TABLE
CAST and CONVERT
CREATE TABLE
Data Type Conversion
Data Types
DECLARE @local_variable
DELETE
INSERT
SET @local_variable
syscolumns
UPDATE
