查看所有表和表注释
select
TABLE_NAME,
TABLE_COMMENT
from
INFORMATION_SCHEMA.Tables
where
table_schema = '某数据库名称'
INFORMATION_SCHEMA.Tables:
TABLE_SCHEMA，TABLE_NAME，CREATE_TIME，UPDATE_TIME，CHECK_TIME，TABLE_COMMENT
查看所有字段和字段注释
select
COLUMN_NAME，
COLUMN_COMMENT
from
INFORMATION_SCHEMA.Columns
where
table_name = '表名'
and table_schema='数据库名'
INFORMATION_SCHEMA.Columns:
TABLE_SCHEMA，TABLE_NAME，COLUMN_NAME, COLUMN_TYPE, COLUMN_KEY