I have two tables I need to join to an invoice table.
There are 4 primary keys on the invoice table:
account_num upc sales_id date
10 001005 356 04/01/2009
The other two tables, discount and promotion, describe specific incentives that are in place. The...
I have two tables I need to join to an invoice table.
There are 4 primary keys on the invoice table:
account_num upc sales_id date
10 001005 356 04/01/2009
The other two tables, discount and promotion, describe specific incentives that are in place. The...
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