Mysql游標查詢結果合併

drop

procedure
ifexists insert_extra_column;
delimiter
//create
procedure insert_extra_column(
)begin
##定義判斷變數
declare _flag varchar(50
);## 定義查詢變數
declare _cur cursor
forselect
`code`
from location l where l.deleted =
0and l.location_type=
'm';
### 迴圈賦初始值
declare
continue
handler
fornot found set _flag=
null
;##建立臨時表儲存每次游標查詢結果
create
temporary
table result_temp(
location_code varchar(50
),diagnosis_count int
, remote_count int
, service_type varchar(20
))engine
=innodb
default
charset utf8;
### 開啟
open _cur;
## 賦值
fetch _cur into _flag;
###迴圈判斷
while
(_flag is
notnull)do
insert
into result_temp 
select 
_flag as location_code,
(select
count(*
)from visit v where v.deleted =
0and v.report_doctor is
notnull
and v.location_code = _flag and v.high_location_code is
null
)as diagnosis_count,
(select
count(*
)from visit v where v.deleted =
0and v.report_doctor is
notnull
and v.location_code = _flag and v.high_location_code is
notnull
)as remote_count,
'rad'
as service_type;
## 賦值下乙個游標
fetch _cur into _flag;
endwhile
;## 關閉
close _cur;
select
*from result_temp;
end// 
delimiter
;

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