keywords table and doc are not match

[shawn0915]

Question

there is one point diff between new table keywords and doc, please confirm.

https://docs.pingcap.com/zh/tidb/v7.5/keywords

doc has: PLACEMENT (S), but keyword table don't has it.

in tidb v7.5.3:

MySQL [(none)]> select tidb_version()\G
*************************** 1. row ***************************
tidb_version(): Release Version: v7.5.3
Edition: Community
Git Commit Hash: 70bfd90035cc81e80d78b4f1f76ca4baef8a5756
Git Branch: HEAD
UTC Build Time: 2024-07-31 13:11:26
GoVersion: go1.21.10
Race Enabled: false
Check Table Before Drop: false
Store: tikv
1 row in set (0.001 sec)

MySQL [(none)]> select * from INFORMATION_SCHEMA.KEYWORDS where upper(word) like 'PLACEMENT';
Empty set (0.001 sec)