SA0208 : Setting CONCAT_NULL_YIELDS_NULL to OFF is deprecated |
![]() |
The topic describes the SA0208 analysis rule.

Setting CONCAT_NULL_YIELDS_NULL to OFF is deprecated

The rule checks T-SQL code for setting CONCAT_NULL_YIELDS_NULL option to OFF.
In a future version of Microsoft SQL Server CONCAT_NULL_YIELDS_NULL will always be ON and any applications that explicitly set the option to OFF will produce an error.

Avoid using this feature in new development work, and plan to modify applications that currently use this feature.
The setting of SET CONCAT_NULL_YIELDS_NULL is set at execute or run time and not at parse time.
To view the current setting for this setting, run the following query.
DECLARE @CONCAT_NULL_YIELDS_NULL VARCHAR(3) = ‘OFF’;
IF((4096 & @@OPTIONS) = 4096 ) SET @CONCAT_NULL_YIELDS_NULL = ‘ON’;
SELECT @CONCAT_NULL_YIELDS_NULL AS CONCAT_NULL_YIELDS_NULL;

The rule has a Batch scope and is applied only on the SQL script.

Rule has no parameters.

The rule does not need Analysis Context or SQL Connection.


Deprecated Features, Bugs


SQL
1ALTER DATABASE TestDb SET ANSI_NULLS OFF 2 3ALTER DATABASE TestDb SET ANSI_PADDING OFF 4 5ALTER DATABASE TestDb SET CONCAT_NULL_YIELDS_NULL OFF 6 7SET CONCAT_NULL_YIELDS_NULL OFF 8 9SET ANSI_PADDING ON 10 11SET CONCAT_NULL_YIELDS_NULL,ANSI_PADDING OFF 12 13SET ANSI_NULLS OFF 14 15SET ANSI_PADDING OFF 16 17SET CONCAT_NULL_YIELDS_NULL OFF 18 19SET ANSI_DEFAULTS OFF |

Message | Line | Column | |
---|---|---|---|
1 | SA0208 : Setting CONCAT_NULL_YIELDS_NULL to OFF is deprecated. | 7 | 4 |
2 | SA0208 : Setting CONCAT_NULL_YIELDS_NULL to OFF is deprecated. | 11 | 4 |
3 | SA0208 : Setting CONCAT_NULL_YIELDS_NULL to OFF is deprecated. | 17 | 4 |
