KEYWORDS

Starting from v7.5.3 and v7.6.0, TiDB provides the KEYWORDS table. You can use this table to get information about keywords in TiDB.

USE INFORMATION_SCHEMA;
DESC keywords;

The output is as follows:

+----------+--------------+------+------+---------+-------+
| Field    | Type         | Null | Key  | Default | Extra |
+----------+--------------+------+------+---------+-------+
| WORD     | varchar(128) | YES  |      | NULL    |       |
| RESERVED | int(11)      | YES  |      | NULL    |       |
+----------+--------------+------+------+---------+-------+
2 rows in set (0.00 sec)

Field description:

• WORD: The keyword.
• RESERVED: Whether the keyword is reserved.

The following statement queries the information about ADD and USER keywords:

SELECT * FROM INFORMATION_SCHEMA.KEYWORDS WHERE WORD IN ('ADD','USER');

From the output, you can see that ADD is a reserved keyword and USER is a non-reserved keyword.

+------+----------+
| WORD | RESERVED |
+------+----------+
| ADD  |        1 |
| USER |        0 |
+------+----------+
2 rows in set (0.00 sec)