[MSAccessProfessionals] Union Query vs. Append query

Hello all,

I download every day records from hyperion and bring them into the database after exporting them to excel and then importing them into the database. because the record count is 295K i delete the records in the database from a certain date and then append the newly downloaded records thus keeping my record count low. 
But I was thinking today. what would be faster to do a union query or an append query?

Thanks for the thoughts

Jim Wagner

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