Question
Suppose you're analyzing a large data set that contains customer transactions. Each customer may have several transactions (i.e. multiple purchases). Since the data set is
Suppose you're analyzing a large data set that contains customer transactions. Each customer may have several transactions (i.e. multiple purchases). Since the data set is so large and noisy, you want to choose the portion that are from the customers who have had at least 7 transactions, or have had purchase amount at least $50, i.e., " customer_transaction >= 7 or dollar_amount >= 50."
In programing code, complement is expressed as "!". For example "A is not equal to 10" is written "A != 10". Now we need a short code to choose the data portion that satisfies "customers who have had at least 7 transactions, or have had purchase amount at least $50".
Complete the following statement by filling in the blank to choose the right portion:
SELECT IF ! (customer_transaction____7 and dollar_amount____50)
Briefly explain your answer in one sentence.
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