元数据定义 #

校验流程 #

标准化 SQL 语句 #

SELECT
*
FROM
(
  SELECT
    *
  FROM
    'sys_user'
  ORDER BY
    'id'
)

注册命名空间和作用域 #

3个命名空间

sys_user
select

2个作用域

SELECT
*
FROM
(
  SELECT
    *
  FROM
    'sys_user'
  ORDER BY
    'id'
) AS 'EXPR$0'

执行校验逻辑 #

SQL语句被展开替换

SELECT
  'EXPR$0'.'id',
  'EXPR$0'.'name',
  'EXPR$0'.'age',
  'EXPR$0'.'sex'
FROM
(
  SELECT
    'sys_user'.'id',
    'sys_user'.'name',
    'sys_user'.'age',
    'sys_user'.'sex',
  FROM
    'sys_user'
  ORDER BY
    'id'
) AS 'EXPR$0'