回答編集履歴
1
chousei
answer
CHANGED
|
@@ -1,4 +1,57 @@
|
|
|
1
1
|
毎回トリガで集計するのも非効率的なので、
|
|
2
2
|
idを指定して集計するようなプロシージャをつくって
|
|
3
3
|
適宜呼び出してやればよいのでは？
|
|
4
|
-
（面倒だけど効率をとるか、簡単だけど非効率をとるか）
|
|
4
|
+
（面倒だけど効率をとるか、簡単だけど非効率をとるか）
|
|
5
|
+
|
|
6
|
+
# 調整
|
|
7
|
+
```SQL
|
|
8
|
+
CREATE TABLE test_journals (
|
|
9
|
+
company_id CHAR(43) NOT NULL,
|
|
10
|
+
journal_id INT NOT NULL,
|
|
11
|
+
account_id CHAR(6),
|
|
12
|
+
amount BIGINT,
|
|
13
|
+
PRIMARY KEY (company_id, journal_id, account_id)
|
|
14
|
+
) DEFAULT CHARSET=utf8;
|
|
15
|
+
|
|
16
|
+
CREATE TABLE test_trial_balances (
|
|
17
|
+
company_id CHAR(43) NOT NULL,
|
|
18
|
+
account_id CHAR(6),
|
|
19
|
+
total_amount BIGINT,
|
|
20
|
+
PRIMARY KEY (company_id, account_id)
|
|
21
|
+
) DEFAULT CHARSET=utf8;
|
|
22
|
+
|
|
23
|
+
/* ここまで提示の通り */
|
|
24
|
+
```
|
|
25
|
+
以下ちょっと手抜き(特にidを指定せずに全更新)
|
|
26
|
+
プロシージャ作成
|
|
27
|
+
```SQL
|
|
28
|
+
drop procedure if exists mod_balances;
|
|
29
|
+
delimiter //
|
|
30
|
+
create procedure mod_balances()
|
|
31
|
+
begin
|
|
32
|
+
insert into test_trial_balances
|
|
33
|
+
select company_id,account_id,sum(amount) from test_journals
|
|
34
|
+
group by company_id,account_id
|
|
35
|
+
on duplicate key update total_amount=values(total_amount);
|
|
36
|
+
end
|
|
37
|
+
//
|
|
38
|
+
delimiter ;
|
|
39
|
+
```
|
|
40
|
+
test_trial_balancesにダミーデータを入れておく
|
|
41
|
+
```SQL
|
|
42
|
+
INSERT IGNORE INTO test_trial_balances VALUES
|
|
43
|
+
('X','aaa',150),
|
|
44
|
+
('X','bbb',100);
|
|
45
|
+
```
|
|
46
|
+
|
|
47
|
+
test_journalsにデータ投入して、その後更新プロシージャを走らせる
|
|
48
|
+
```SQL
|
|
49
|
+
INSERT IGNORE INTO test_journals VALUES
|
|
50
|
+
('X','1','aaa',100),
|
|
51
|
+
('X','2','aaa',200),
|
|
52
|
+
('X','3','aaa',-150),
|
|
53
|
+
('X','1','bbb',300),
|
|
54
|
+
('X','2','bbb',400),
|
|
55
|
+
('Y','1','aaa',500);
|
|
56
|
+
call mod_balances();
|
|
57
|
+
```
|