oracle query example - statistics

1. Statistics of the number of orders created and completed in August by order type.

--According to the order type, the number of created and completed orders of various types in August
select t.TYPEID,sum(t.create_num1) AS create_num,sum(t.create_done_num) AS create_done_num
--t.create_num1: The column names referenced here are based on the column names of the first query
from (
	select two.TYPEID,count(two.WORKORDERID) AS create_num1,0 AS create_done_num from t_workorder two
	 where two.CREATETIME >= to_date('2017-08','yyyy-MM')
	 	AND two.CREATETIME < add_months(to_date('2017-08','yyyy-MM'),1)
	group BY two.TYPEID
	--Execution result alone:
	--111105460,3,0
	--111155044,1,0
  union all
	select two.TYPEID,0 AS create_num2,count(two.WORKORDERID) AS create_done_num from t_workorder two
	 where two.CREATETIME >= to_date('2017-08','yyyy-MM')
	 	AND two.CREATETIME < add_months(to_date('2017-08','yyyy-MM'),1)
	 	AND two.STATE = 10
	group BY two.TYPEID
	--Execution result alone:
	--111105460,0,2
--union all results:
--111105460,3,0
--111155044,1,0
--111105460,0,2
) t
group by t.TYPEID;
--group result:
--111105460,3,2
--111155044,1,0