55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
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Disabling "ANSI_WARNINGS" and/or "ARITHABORT" in a procedure may silence errors, decrease performance, or block index creation.
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:link-with-uscores1: https://learn.microsoft.com/en-us/sql/t-sql/statements/set-arithabort-transact-sql
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:link-with-uscores2: https://learn.microsoft.com/en-us/sql/t-sql/statements/set-ansi-warnings-transact-sql
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From the documentation ({link-with-uscores1}[ARITHABORT], {link-with-uscores2}[ANSI_WARNINGS]), disabling these options could result in (among others):
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``++SET ANSI_WARNINGS OFF++``
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* CREATE, UPDATE, INSERT, and DELETE statements on tables with indexes on computed columns or indexed views will fail
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* No warning issued if null values appear in aggregate functions, such as SUM, AVG, MAX, MIN, STDEV, STDEVP, VAR, VARP, or COUNT
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* The divide-by-zero and arithmetic overflow errors cause null values to be returned, no roll-back
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``++SET ARITHABORT OFF++``
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* It can negatively impact query optimization, leading to performance issues
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* An arithmetic, overflow, divide-by-zero, or domain error, during INSERT, UPDATE, or DELETE statement will cause SQL Server to insert or update a NULL value
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This rule raises an issue when "ANSI_WARNINGS" and/or "ARITHABORT" are set to ``++OFF++`` in a procedure.
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== Noncompliant Code Example
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[source,sql]
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----
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CREATE PROCEDURE myProc
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AS
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BEGIN
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SET ANSI_WARNINGS OFF; -- Noncompliant
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SET ARITHABORT OFF; -- Noncompliant
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-- ...
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END
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----
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== Compliant Solution
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[source,sql]
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----
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CREATE PROCEDURE myProc
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AS
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BEGIN
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-- OK - Default value is ON
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END
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CREATE PROCEDURE myProc
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AS
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BEGIN
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SET ANSI_WARNINGS, ARITHABORT ON;
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END
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----
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== See
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* {link-with-uscores1}[Microsoft Documentation: SET ARITHABORT (Transact-SQL)]
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* {link-with-uscores2}[Microsoft Documentation: SET ANSI_WARNINGS (Transact-SQL)]
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