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Run complexe SQL statement within C# code

Posted on 2011-03-08
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Last Modified: 2012-08-13
Hi Folks, I need to run a complexe SQL statement within a C# method. I tested the following with a basic sql statement:

 public ICollection<SerialNumber> GetSerialNumbersByOperation(Operation OperationLot)
        {

            ISession session = SessionFactory.OpenReadOnly();

            Collection<SerialNumber> SNList = new Collection<SerialNumber>();

            SerialNumber SN;

            SN = new SerialNumber();

            SqlDataReader reader = null;
            SqlConnection connection = null;
            SqlCommand command = null;


            string ConnectionString = "server=ES-52ZCRM1;uid=username;" +
                            "pwd=password; database=soadb";
            connection = new SqlConnection(ConnectionString);
            connection.Open();

            string CommandText = "select SOADB.dbo.MaterialLot.S95Id from SOADB.dbo.MaterialLot " +
                                 "inner join  SOADB.dbo.MaterialDefinition on SOADB.dbo.MaterialDefinition.MaterialDefinitionId = SOADB.dbo.MaterialLot.MaterialDefinitionId " +
                                 "where SOADB.dbo.MaterialLot.QuantityUnitOfMeasure like 'Component' and SOADB.dbo.MaterialDefinition.S95Id like '105E9495P001'";

            command = new SqlCommand(CommandText);
            command.Connection = connection;

            // Execute the query
            reader = command.ExecuteReader();

            while (reader.Read())
            {
                SN.Id = reader["S95Id"].ToString();
                SNList.Add(SN);
            }
            reader.Close();


            return SNList;
            }

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Now, I would like to replace the basic statement by this one:
use [SOADB]

declare @Part varchar(50)
declare @PartType varchar(50)
declare @ShopOrder varchar(50)
declare @Operation varchar(50)
declare @Rows int
declare @Row int

select @Part = '105E8762G005' 
select @ShopOrder = '7700555'  --'OF:200300202 SN:301230002'
select @Operation = '020'


DECLARE @lotByMaterialEquipment TABLE  (
		RowID				INT IDENTITY(1,1) not null,
		LotId				VARCHAR(50),
		MaterialLotId		VARCHAR(255),
		DataType			VARCHAR(50),
		Operation			VARCHAR(50))

INSERT INTO @lotByMaterialEquipment (LotId, MaterialLotId, DataType) 
SELECT ML.S95Id, MLP.MaterialLotId, MLP.Name FROM MaterialLotProperty MLP
		INNER JOIN MaterialLot ML ON ML.MaterialLotId = MLP.MaterialLotId
WHERE  (MLP.Name LIKE 'Work request' or MLP.Name LIKE 'Current Operation') AND MLP.Value = @ShopOrder
ORDER BY ML.S95Id


SELECT	@Rows =  COUNT(*) FROM @lotByMaterialEquipment
SELECT	@Row = 0
			
			
	If @Rows = 0
	BEGIN
		RETURN
	END
	
	WHILE @Row < @Rows
	BEGIN
		SELECT @Row = @Row + 1
				
		UPDATE @lotByMaterialEquipment set Operation = (SELECT CONVERT(varchar(50),MLP.Value) FROM MaterialLotProperty MLP
		INNER JOIN @lotByMaterialEquipment LB on LB.MaterialLotId = MLP.MaterialLotId
		WHERE  MLP.Name LIKE 'Current Operation' AND MLP.Value = @Operation AND LB.RowID = @Row)
	
	END

SELECT LotId FROM @lotByMaterialEquipment WHERE Operation LIKE @Operation order by RowID

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Do you have some advices to do that?

Thanks in advance
Regards
0
Comment
Question by:Foudebach
7 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 35067050
the advice is to put that code into a stored procedure in the relevant database, and then run the procedure simply by name + parameters
http://www.csharp-station.com/Tutorials/AdoDotNet/Lesson06.aspx
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 35067059
Trying to run that as an inline SQL statement isn't going to happen ;)

You need to create that as a stored procedure on your SQL Server and execute it like:
            string CommandText = "Your_SP_Name";

            command = new SqlCommand(CommandText);
            command.CommandType = CommandType.StoredProcedure
            command.Connection = connection;

            // etc, etc

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0
 
LVL 44

Expert Comment

by:AndyAinscow
ID: 35067096
Off question - don't put user name/password or other sensitive information into questions.  Anyone could read this.
I'd suggest you edit (or ask for a moderator to do so) the sensitive information away from the question.
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Accepted Solution

by:
Foudebach earned 0 total points
ID: 35073196
Hi, I don't know how edit again my question to remove sensitive data...
Concerning my question, I put the sql statement within a string by using the right way. Maybe I will move the sql statement into a stored procedure.
Thanks a lot for your help.
Regards,
0
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 35080119
to note that, removing the "use [SOADB]" for the sql, it can actually be executed from C# like that.
however, adding a "SET NOCOUNT ON" will avoid empty data reader() ...
good luck
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Author Closing Comment

by:Foudebach
ID: 35120690
Great job
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