I have data in two columns. I need to write a query that only shows the customers that have gone over their credit limit and by how much:
customer balance credit limit
418.75 500
10.75 200
200.1 100
Of course this doesn t take customer information into account since you didn t mention any customer tables, but this should get you the customer balance and overage:
SELECT customer_balance, credit_limit, customer_balance - credit_limit as overage
FROM your_table
WHERE customer_balance > credit_limit
这简直是直截了当;你选择客户,在限额上保持平衡,只是选择差额作为第三栏。
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