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Many of the reports generated from the system calculate the total dollars in purchases for a shopper. Complete the following steps to create a function named TOT_PURCH_SF that accepts a shopper id as input and returns the total dollars that the shopper has spent with the company. Use the function in a SELECT statement that shows the shopper id and total purchases for every shopper in a database.
1. Develop and run a CREATE FUNlculate the Total Shopper Spending CTION statement to create the TOT_PURCH_SF function. The function code needs a formal parameter for the shopper id and to sum the total column from the BB_BASKET table.
2. Develop a SELECT statement using the BB_SHOPPER table to produce a list of each shopper in the database and his or her respective totals.
GOTO Statement The GOTO statement branches to a label unconditionally. The label must be exclusive within its scope and should precede an executable statement or a PL/SQL block.
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which operation is used if we are interested in only certain columns of a table?
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