<div>
hmm..<br />
<br />

<pre><code id="code-8270744">USE AdventureWorks2014;
GO

DECLARE @AllRows BIT = 0;

SELECT	*
FROM	sys.tables T
WHERE	T.name LIKE 'Person%' OR @AllRows = 1;

SET @AllRows = 1;

SELECT	*
FROM	sys.tables T
WHERE	T.name LIKE 'Person%' OR @AllRows = 1</code></pre>
</div>


hmm..



USE AdventureWorks2014;
GO

DECLARE @AllRows BIT = 0;

SELECT	*
FROM	sys.tables T
WHERE	T.name LIKE 'Person%' OR @AllRows = 1;

SET @AllRows = 1;

SELECT	*
FROM	sys.tables T
WHERE	T.name LIKE 'Person%' OR @AllRows = 1

<div>
If @variable could ever possibly be null rather than no:<br />
<br />
select * from table<br />
where date &gt;= getDate() and (@variable is null or @variable = 'n' or customerActive = 1)
</div>


If @variable could ever possibly be null rather than no:

select * from table
where date >= getDate() and (@variable is null or @variable = 'n' or customerActive = 1)

<div>
thank you, there is chance of a null value so this worked perfectly
</div>


thank you, there is chance of a null value so this worked perfectly

<div>
<div class="content wysiwyg-content">
is it possible to have an if statement in a query - so if a value of a variable is 'yes' for example a line is added to the query ?<br />
<br />
ie<br />
<br />
@Variable<br />
<br />
select * from table<br />
where date &gt;= getDate()<br />
if @Variable = 'yes' then add this line of code to the query<br />
and customerActive = 1
</div>
</div>


is it possible to have an if statement in a query - so if a value of a variable is 'yes' for example a line is added to the query ?

ie

@Variable

select * from table
where date >= getDate()
if @Variable = 'yes' then add this line of code to the query
and customerActive = 1

sql stored procedure + if statement

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.