we can use DataGrip to write Sqls in a window. Thats wonderful.
for example:
-- desc tbl_unit;
-- select * from tbl_unit;
# 每個區(高橋區)下面的所有街道信息：
/*
select
id,
name,
manager_user,
address,
gds1
from tbl_unit
where fatherid in (select id
from tbl_unit
where del = 0 and fatherid = 2)
and state = '正常營業'
and area_id = 1;
*/
When we use it ,we can write everything. When we don't use it ,we can make an annotation by -- # or /**/
注：代碼上面的"正常營業"并不是筆者設計的，筆者后來看到這漢字，實在無法接受。
