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Editorial Team
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Asked: 2026-05-15T20:12:37+00:00

I am working on a data warehousing project where several systems are loading data

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I am working on a data warehousing project where several systems are loading data into a staging area for subsequent processing. Each table has a “loadId” column which is a foreign key against the “loads” table, which contains information such as the time of the load, the user account, etc.

Currently, the source system calls a stored procedure to get a new loadId, adds the loadId to each row that will be inserted, and then calls a third sproc to indicate that the load is finished.

My question is, is there any way to avoid having to pass back the loadId to the source system? For example, I was imagining that I could get some sort of connection Id from Sql Server, that I could use to look up the relevant loadId in the loads table. But I am not sure if Sql Server has a variable that is unique to a connection?

Does anyone know?

Thanks,

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1 Answer

  1. Editorial Team

    I assume the source systems are writing/committing the inserts into your source tables, and multiple loads are NOT running at the same time…

    If so, have the source load call a stored proc, newLoadStarting(), prior to starting the load proc. This stored proc will update a the load table (creates a new row, records start time)

    Put a trigger on your loadID column that will get max(loadID) from this table and insert as the current load id.

    For completeness you could add an endLoading() proc which sets an end date and de-activates that particular load.

    If you are running multiple loads at the same time in the same tables…stop doing that…it’s not very productive.

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