Hi, Jiah He!
1.
 >please check the attach doc refactor for v62-0001.
Thanks for the changes, they look good (in translation).
2.
 >here ereport should be elog(ERROR...).
 >since this error should be unreachable. see check_nested_generated,
 >cookDefault.
Changed.
3.
 >"(as for LIKE and inheritances)":
 >I think you meant, “CREATE TABLE LIKE and table inheritance reject
 >whole-row check constraint, here we will do the same”.
 >maybe change to ""(as for CREATE TABLE LIKE and inheritances)".
Changed.
--
With best regards,
Dmitry Koval
Postgres Professional: http://postgrespro.com