Question

Retrieving the returning clause from oracle

Asked by: BobCSD

Once I've written my commandtype.text query and returned the Id I just inserted, how do I pass in or retrieve the value of the ID back to my calling program in order to work with it?

See snippet.

How do I pass in/ retrieve out this value?
cmd.Parameters.Add("v_listsetId", OracleDbType.Decimal)

thanks!

Dim sql As String = _
 "INSERT INTO " & Me.DatabaseTableName & " ( listSetId,userCreatedId, dateCreated ) " & _
"      VALUES ( listSetId_seq.nextval, :USERCREATEDID, :dateCreated) " & _
" returning listSetId into v_listsetId;"
 
Dim cmd As New OracleCommand(sql.ToString, con)
cmd.CommandType = CommandType.Text
 
cmd.Parameters.Add("v_listsetId", OracleDbType.Decimal)
cmd.Parameters.Add("userCreatedId", OracleDbType.Int16).Value = Me.UserCreatedId
cmd.Parameters.Add("dateCreated", OracleDbType.Date).Value = Now()

                                  
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Asked On
2009-08-06 at 07:14:00ID24631430
Topics

Oracle 10.x

,

Programming for ASP.NET

,

PL / SQL

Participating Experts
2
Points
500
Comments
9

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Answers

 

by: bittiPosted on 2009-08-06 at 07:18:09ID: 25033619

The variable v_listsetId inside the SQL must be declared as a BIND variable, try this :

 "INSERT INTO " & Me.DatabaseTableName & " ( listSetId,userCreatedId, dateCreated ) " & _
"      VALUES ( listSetId_seq.nextval, :USERCREATEDID, :dateCreated) " & _
" returning listSetId into :v_listsetId;"
                                              
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by: BobCSDPosted on 2009-08-06 at 07:21:43ID: 25033652

Your snippet only has the insert clause. The rest of the solution appears to be missing.

 

by: sdstuberPosted on 2009-08-06 at 07:23:40ID: 25033684

try adding an output parameter

Dim cmd As New OracleCommand(sql.ToString, con)
cmd.CommandType = CommandType.Text
 
cmd.Parameters.Add("RETURNINGID", OracleType.Int32, 0, "ID");
cmd.Parameters[0].Direction = ParameterDirection.Output
cmd.Parameters.Add("v_listsetId", OracleDbType.Decimal)
cmd.Parameters.Add("userCreatedId", OracleDbType.Int16).Value = Me.UserCreatedId
cmd.Parameters.Add("dateCreated", OracleDbType.Date).Value = Now()
                                              
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by: bittiPosted on 2009-08-06 at 07:26:31ID: 25033721

The rest is the original code, just put ":" on v_listsetId inside Insert command.

Regards

 

by: sdstuberPosted on 2009-08-06 at 07:28:54ID: 25033747

oops, I see you already had added the parameter,  so, just change it's direction to output

 

by: BobCSDPosted on 2009-08-06 at 12:31:50ID: 25037238

Okay, I still need to know how to retreive it in asp.net.

I have this:

cmd.Parameters.Add("VLISTSETID", OracleDbType.Decimal, ParameterDirection.Output)
Me.ListSetId = CInt(cmd.ExecuteScalar)

The executescaler doesn't work with oracle. So how do ya'll retrieve it?

thanks!

 

 

by: BobCSDPosted on 2009-08-07 at 06:43:56ID: 25042575

No one ever does this?

How do I retrieve it?

 

by: BobCSDPosted on 2009-08-07 at 09:31:55ID: 25044503

I figured this out, how to retrieve the returning clause.


cmd.Parameters.Add("VLISTSETID", OracleDbType.Decimal, ParameterDirection.Output)
cmd.ExecuteNonQuery()
Me.ListSetId = Convert.ToInt32(cmd.Parameters("VLISTSETID").Value.ToString())

It is very important to add .ToString to the parameter value before converting it, or you'll get the error:
Unable to cast object of type 'Oracle.DataAccess.Types.OracleDecimal' to type 'System.IConvertible'.

 Thanks!

 

by: sdstuberPosted on 2009-08-07 at 09:35:23ID: 25044551

glad we could help!
sorry took so long to get back on the .Value,  
but glad you figured that bit out on your own

20120131-EE-VQP-002

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