rspec/rules/S4820/tsql/rule.adoc
Fred Tingaud 16f6c0aecf
Inline adoc when include has no additional value (#1940)
Inline adoc files when they are included exactly once.

Also fix language tags because this inlining gives us better information
on what language the code is written in.
2023-05-25 14:18:12 +02:00

101 lines
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Plaintext

== Why is this an issue?
SQL Server can be tuned at ``++PROCEDURE++`` and ``++TRIGGER++`` levels thanks to several ``++SET++`` statements that change the current session handling of specific information.
This rule raises an issue when expected configuration is not set or is set with an unexpected value between the beginning of the ``++PROCEDURE++`` (or ``++TRIGGER++``) definition and the first statement that is not a ``++SET++``, ``++IF++`` or ``++DECLARE++``.
=== Noncompliant code example
When this rule is configured with ARITHABORT and ON.
[source,sql]
----
CREATE PROCEDURE dbo.MyProc
AS
BEGIN
SET ARITHABORT OFF; -- Noncompliant; ARITHABORT is OFF
SELECT COUNT(*) FROM MY_TABLE
END;
----
[source,sql]
----
ALTER PROCEDURE dbo.MyProc
AS
BEGIN
SELECT COUNT(*) FROM MY_TABLE
SET ARITHABORT ON; -- Noncompliant; ARITHABORT is not set at the beginning of the procedure definition
[...]
END;
----
[source,sql]
----
CREATE PROCEDURE dbo.MyProc
AS
BEGIN
-- Noncompliant; ARITHABORT is not set at all, so default value of SQL Server will be applied
SELECT COUNT(*) FROM MY_TABLE
END;
----
=== Compliant solution
[source,sql]
----
CREATE PROCEDURE dbo.MyProc(@setConfig INT)
AS
BEGIN
IF @setConfig=1
BEGIN
SET ARITHABORT ON;
END
SELECT COUNT(*) FROM MY_TABLE
END;
----
[source,sql]
----
ALTER PROCEDURE dbo.MyProc
AS
BEGIN
DECLARE @var INT;
SET ARITHABORT ON;
[...]
END;
----
== Resources
* https://docs.microsoft.com/en-us/sql/t-sql/statements/set-statements-transact-sql?view=sql-server-2017[SET Statements] - SQL Server (Transact-SQL) Documentation
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
=== Message
\[Add|Set] configuration "xxx" with expected value "yyy".
=== Parameters
.configuration identifier
****
identifier of the parameter to configure
****
.value
****
value expected for the parameter
****
endif::env-github,rspecator-view[]