Found an interesting SSIS tidbit today which I've amazingly never encountered before. Not quite sure how I've never managed to hit this problem before - it seems surprising to me but there you go, I guess it happens from time to time.
In an ExecuteSQLTask, I was returning a scalar value to a variable. The value returned was a bigint. My SSIS variable was a bigint. The step failed with an invalid type error. What the? Changed the type to an object. Success this time but not much help to me down the control flow because I can't read it without a ForEach - which I really don't wanna do for a scalar value. I mean that would just be silly.
According to Technet "With an OLE DB or Excel connection manager, the connection manager explicitly converts values of the following types, DBTYPE_NUMERIC, DBTYPE_GUID, and DBTYPE_BYTES, to strings". Seems crazy to me! I changed the SSIS variable to a string and what do you know, success.
Nuts!
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