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Friday, February 21, 2014
Monday, February 10, 2014
Dynamic SQL with parameters example
--Create some fake data
SELECT *
SELECT *
INTO #temp
FROM
(SELECT 5 AS number,
'Fritz'
AS name,
'Mustang' AS
car,
21 AS
age
UNION
SELECT 1
AS number,
'Tom'
AS name,
'Ferrari' AS
car,
45 AS
age
UNION
SELECT 2
AS number,
'Tom' AS name,
'Lamborghini' AS
car,
65 AS age)x
--Declare parameters
DECLARE @Query NVARCHAR(max)
DECLARE @ParameterDefinition
NVARCHAR(max)
DECLARE @minAge INT
DECLARE @name VARCHAR(max)
--Set parameters
SET @minAge=30
SET @name='Tom'
SET @Query=
'select * from #temp where age>@minAge
and name=@name order by age desc'
SET @ParameterDefinition=N'@name varchar(max),@minAge
int'
--Print the query for debugging
PRINT @Query
--Print the query for debugging
PRINT @Query
--Execute query
EXECUTE sp_executesql
@Query,
@ParameterDefinition,
@name, @minAge--parameter values
have to be in the same order as in the declaration (@ParameterDefinition)
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