C#•13mo ago

Returning a value after a insert statement

This is the code im running in DotNet:

c++
var testQuery = $@"
  INSERT INTO [{databaseName}].[dbo].[steptable] ([Type], [ParentKey], [SubWorkflowCode], [Sequence], [WorkflowKey]) 
  OUTPUT inserted.[Key]
  VALUES (@Type, CASE WHEN @ParentKey = 0 THEN NULL ELSE @ParentKey END, @SubWorkflowCode, @Sequence, @WorkflowKey);";

var test = await connection.ExecuteAsync(testQuery, step);

c++
var testQuery = $@"
  INSERT INTO [{databaseName}].[dbo].[steptable] ([Type], [ParentKey], [SubWorkflowCode], [Sequence], [WorkflowKey]) 
  OUTPUT inserted.[Key]
  VALUES (@Type, CASE WHEN @ParentKey = 0 THEN NULL ELSE @ParentKey END, @SubWorkflowCode, @Sequence, @WorkflowKey);";

var test = await connection.ExecuteAsync(testQuery, step);

After execution the var test contains 1. When i run the same sql statement in mssql the result can be seen in the attached image. I think the 1 comes from the row number, but i need the 441 to be returned into the test variable. Thanks in advance!

5 Replies

Hackmagician•13mo ago

isnt that just a row number?

Zil•13mo ago

yea It is a row number, but i think that is being returned instead of the Key that i want

Anchy•13mo ago

those methods typically return the number of affected rows, not the row number

HimmDawg•13mo ago

Sql should have something like select LAST_INSERT_ID() that will get that id for you automatically. Assuming that your connection wasn't terminated and recreated in the meantime

Zil•13mo ago

I fixed it, didnt see your replies till now, thanks anyway!

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Returning a value after a insert statement