如何在MySQL中找到一个列是否为自增列？

要在MySQL中查找列是否为auto_increment，您可以使用以下语法 −

select COLUMN_NAME from information_schema.columns where
TABLE_SCHEMA='yourDatabaseName' and TABLE_NAME='yourTableName' and EXTRA
like '%auto_increment%';

Let us first create a table. Here, ClientId is set AUTO_INCREMENT −

mysql> create table autoIncrementTableDemo
   -> (
   -> ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> ClientName varchar(20),
   -> ClientAge int,
   -> ClientAddress varchar(100),
   -> ClientCountryName varchar(100)
   -> );
Query OK, 0 rows affected (0.61 sec)

现在，让我们找出是否有任何列是auto_increment −

mysql> select COLUMN_NAME from information_schema.columns where
TABLE_SCHEMA='test' and TABLE_NAME='autoIncrementTableDemo' and EXTRA like
'%auto_increment%';

以下是输出结果，显示了列，即auto_increment −

+-------------+
| COLUMN_NAME |
+-------------+
| ClientId    |
+-------------+
1 row in set (0.00 sec)

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