Solving query problem: How to get all the results from the Customers table and replace the null values in the Status and Fax columns with empty strings?
P粉7262346482024-04-01 15:06:14
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I am very confused about this question. The problem is that I know I can use the COALESCE function, but how? Because there are two columns here, State and Fax.
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You can use if null