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Fix Error in MySQL syntax while creating a table column with name “index”?
You can’t use the index as a column name because it is a reserved word. For this, you need to use backticks around the column name.
If you will use a reserved word as the column name, you can see the following error−
mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> index int -> )ENGINE=MyISAM; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'int )ENGINE=MyISAM' at line 4
Let us first create a table. Here, we are using a reserved word index as the column name, but enclosing it with backticks won’t give an error−
mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> `index` int -> )ENGINE=MyISAM; Query OK, 0 rows affected (0.28 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(`index`) values(4); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(`index`) values(8); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable(`index`) values(12); Query OK, 1 row affected (0.06 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----+-------+ | Id | index | +----+-------+ | 1 | 4 | | 2 | 8 | | 3 | 12 | +----+-------+ 3 rows in set (0.00 sec)
Updated on: 12-Dec-2019
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