回答編集履歴
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chousei
test
CHANGED
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@@ -5,3 +5,109 @@
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適宜呼び出してやればよいのでは？
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6
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（面倒だけど効率をとるか、簡単だけど非効率をとるか）
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# 調整
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12
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```SQL
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14
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CREATE TABLE test_journals (
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company_id CHAR(43) NOT NULL,
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journal_id INT NOT NULL,
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account_id CHAR(6),
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amount BIGINT,
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PRIMARY KEY (company_id, journal_id, account_id)
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) DEFAULT CHARSET=utf8;
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CREATE TABLE test_trial_balances (
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company_id CHAR(43) NOT NULL,
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account_id CHAR(6),
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total_amount BIGINT,
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PRIMARY KEY (company_id, account_id)
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) DEFAULT CHARSET=utf8;
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/* ここまで提示の通り */
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```
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以下ちょっと手抜き(特にidを指定せずに全更新)
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プロシージャ作成
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```SQL
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drop procedure if exists mod_balances;
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delimiter //
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create procedure mod_balances()
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begin
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insert into test_trial_balances
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select company_id,account_id,sum(amount) from test_journals
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group by company_id,account_id
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on duplicate key update total_amount=values(total_amount);
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end
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//
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delimiter ;
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```
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test_trial_balancesにダミーデータを入れておく
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```SQL
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INSERT IGNORE INTO test_trial_balances VALUES
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('X','aaa',150),
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('X','bbb',100);
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```
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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
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```SQL
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INSERT IGNORE INTO test_journals VALUES
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('X','1','aaa',100),
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('X','2','aaa',200),
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('X','3','aaa',-150),
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('X','1','bbb',300),
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('X','2','bbb',400),
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('Y','1','aaa',500);
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call mod_balances();
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```
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