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Can we use reserved word ‘index’ as MySQL column name?
Yes, but you need to add a backtick symbol to the reserved word (index) to avoid error while using it as a column name.
Let us first create a table −
mysql> create table DemoTable ( `index` int ); Query OK, 0 rows affected (0.48 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(1000); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(1020); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(967); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(567); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(1010); Query OK, 1 row affected (0.18 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------+ | index | +-------+ | 1000 | | 1020 | | 967 | | 567 | | 1010 | +-------+ 5 rows in set (0.00 sec)
Now let us display some records with our column name `index`. Here, we are displaying 3 records −
mysql> select *from DemoTable order by `index` DESC LIMIT 3;
This will produce the following output −
+-------+ | index | +-------+ | 1020 | | 1010 | | 1000 | +-------+ 3 rows in set (0.00 sec)
Updated on: 27-Sep-2019
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