I have some SQL that I am converting to stored procedures via blind requirement/request. There is a bit of SQL in the application I'm looking at that builds the where clause with a dynamic IN (set) statement. I have searched for dynamic stored procedure but nothing close to what I'm looking for has come up for me. Here is a sample of the WHERE clause:
WHERE Var.A = @Param AND Var.Id IN
From here the SQL is built manually using a string builder and then executed. Not sure how I'd convert this into a stored procedure as I'm fairly new to them.
We are using C# and SQL Server
You could use an user-defined data type.
On the C# side it would look like this:
//Setup a DataTable with the same structure as the SQL Type
var data = new DataTable();
data.Columns.Add("value", typeof(string));
//Populate the table
data.Rows.Add("oneID");
data.Rows.Add("anotherID");
//You create your sql command
cmd.Parameters.Add("@listArgument", data);
//Command execution
On the SQL side you could have a type like this
CREATE TYPE [dbo].[NVarCharTable] AS TABLE (
[value] NVARCHAR(MAX) NOT NULL);
And then the Stored procedure:
CREATE PROCEDURE [dbo].[MyProc]
@listArgument NVarCharTable READONLY
AS
BEGIN
SELECT *
FROM FOO
WHERE Var.Id IN (Select [value] FROM @listArgument)
END
Reference: https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/sql/table-valued-parameters
If you are using SQl SERVER 2016 or above you can use the string_split function to convert the csv params into table and then use it in your IN list
eg
SELECT * FROM TBL WHERE Var.A = @Param AND Var.Id IN (SELECT value FROM STRING_SPLIT(@inlist, ','))
Hope this helps
To piggy back off of @lostmylogin, you can pass in a parameter delimited and use one of these SQL functions to parse it into a table:
http://sqlservercentral.com/scripts/SUBSTRING/124330 or http://sqlservercentral.com/scripts/Miscellaneous/31913
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