使用 HAVING 查找列名长度大于 5 的所有列。这将产生以下输出 -
+-------------------+-------------------------+
| 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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