使用 HAVING 查找列名长度大于 5 的所有列。这将产生以下输出 –
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+-------------------+-------------------------+| TABLE_NAME | COLUMN_NAME |+-------------------+-------------------------+| DemoTable | UserId || DemoTable | EndDate || DemoTable | StartDate || DemoTable | StudentFavouriteSubject || DemoTable | StudentFirstName || DemoTable | StudentId || DemoTable | ShippingDate || DemoTable | Number || DemoTable | Value1 || DemoTable | Value2 || DemoTable | ArrivalDate || DemoTable | ShippingDate || DemoTable | UserAge || DemoTable | UserId || DemoTable | UserName || DemoTable | CustomerId || DemoTable | CustomerValue || DemoTable | UserId || DemoTable | UserMailId || DemoTable | FirstName || DemoTable | Number || DemoTable | isMarried || DemoTable | Number || DemoTable | FruitName || DemoTable | FruitPrice || DemoTable | CustomerAllProductPrice || DemoTable | CustomerId || DemoTable | CustomerName || DemoTable | UserId || DemoTable | UserScore || DemoTable | StudentAge || DemoTable | StudentCountryName || DemoTable | StudentFirstName || DemoTable | StudentId || DemoTable | StudentLastName || DemoTable | FirstName || DemoTable | Arrivaldatetime || DemoTable | Amount || DemoTable | Number || DemoTable | Number || DemoTable | FirstName || DemoTable | CustomerId || DemoTable | CustomerPrice || DemoTable | CustomerProductName || DemoTable | CustomerProductQuantity || DemoTable | Value1 || DemoTable | Value2 || DemoTable | FirstName || DemoTable | LastName || DemoTable | UserId || DemoTable | MonthNumber || DemoTable | YearNumber || insertcurrentdate | currentDate || student | first_name || student | last_name |+-------------------+-------------------------+55 rows in set (0.01 sec)
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