口座番号に基づいてランニング残高列を作成するにはどうすればよいですか？

Question

1つまたは複数のアカウントのアカウントステートメントを返すストアドプロシージャがあります。ここで問題があるのは、アカウント番号に基づいて各レコードの実行残高を返すことです。クエリで各アカウントの残高がリセットされません。これを行うにはどうすればよいですか？

 SELECT acc_account_transactions.account_no, COALESCE(debit_balance) as debits , COALESCE(credit_balance) as credits , (@running_balance := @running_balance + (acc_account_transactions.debit_balance - acc_account_transactions.credit_balance)) as balance FROM acc_account_transactions JOIN (SELECT @running_balance := 0) r ORDER BY account_no

これを実行すると、次のようになりますが、アカウントごとに残高がリセットされません

account debit credit balance 13 |2578.19 | 0.00 | 2578.19 13 |1500.00 | 0.00 | 4078.19 13 |1500000.00 | 0.00 | 1504078.19 13 |1500.00 | 0.00 | 1505578.19 14 |1500000.00 | 0.00 | 3005578.19 <--- reset before this 14 |0.00 | 13500.00 | 2992078.19 14 |0.00 | 13500.00 | 2978578.19 14 |33458.43 | 0.00 | 3012036.62 15 |0.00 | 100000.00 | 2912036.62 <--- reset before this 15 |18506.34 | 0.00 | 2930542.96 16 |946.20 | 0.00 | 2931489.16 <--- reset before this 17 |90364.77 | 0.00 | 3021853.93 <--- reset before this 21 |0.00 | 0.00 | 3021853.93 <--- reset before this 22 |0.00 | 0.00 | 3021853.93 <--- reset before this 23 |0.00 | 0.00 | 3021853.93 <--- reset before this 23 |1105500.00 | 0.00 | 4127353.93 24 |1327.00 | 0.00 | 4128680.93 <--- reset before this 25 |0.00 | 0.00 | 4128680.93 <--- reset before this

ありがとう

Akina · Accepted Answer

簡単に必要なようです

SELECT *, SUM(debit_balance - credit_balance) OVER (PARTITION BY account_no ORDER BY id) balance FROM acc_account_transactions

フィドル

RolandoMySQLDBA · Answer

クエリにリセットする機能がありませんでした@running_balance。リセットできるのは@running_balance行が異なる場合account_no前の行から。

これを念頭に置いて、（ドラムロールください）...

提案されたクエリ

SELECT account_no,debits,credits,balance FROM (SELECT account_no ,COALESCE(debit_balance) as debits ,COALESCE(credit_balance) as credits ,(@running_balance := IF(@curr_account_no < account_no, 0,@running_balance)) prev_runnng_bal ,(@curr_account_no := IF(@curr_account_no < account_no,account_no,@curr_account_no)) curr_account_no ,(@running_balance := @running_balance + (acc_account_transactions.debit_balance - acc_account_transactions.credit_balance)) as balance FROM acc_account_transactions,(SELECT @running_balance := 0,@curr_account_no := 0) r ORDER BY account_no) A;

提案されたクエリ内のサブクエリ

SELECT account_no ,COALESCE(debit_balance) as debits ,COALESCE(credit_balance) as credits ,(@running_balance := IF(@curr_account_no < account_no, 0,@running_balance)) prev_runnng_bal ,(@curr_account_no := IF(@curr_account_no < account_no,account_no,@curr_account_no)) curr_account_no ,(@running_balance := @running_balance + (acc_account_transactions.debit_balance - acc_account_transactions.credit_balance)) as balance FROM acc_account_transactions, (SELECT @running_balance := 0,@curr_account_no := 0) r ORDER BY account_no;

サンプルデータ

DROP DATABASE IF EXISTS abeersul; CREATE DATABASE abeersul; USE abeersul CREATE TABLE acc_account_transactions ( id INT NOT NULL AUTO_INCREMENT, account_no INT NOT NULL, debit_balance DOUBLE NOT NULL, credit_balance DOUBLE NOT NULL, PRIMARY KEY (id) ); INSERT INTO acc_account_transactions (account_no,debit_balance,credit_balance) VALUES (13,2578.19 , 0.00 ), (13,1500.00 , 0.00 ), (13,1500000.00 , 0.00 ), (13,1500.00 , 0.00 ), (14,1500000.00 , 0.00 ), (14,0.00 , 13500.00 ), (14,0.00 , 13500.00 ), (14,33458.43 , 0.00 ), (15,0.00 , 100000.00), (15,18506.34 , 0.00 ), (16,946.20 , 0.00 ), (17,90364.77 , 0.00 ), (21,0.00 , 0.00 ), (22,0.00 , 0.00 ), (23,0.00 , 0.00 ), (23,1105500.00 , 0.00 ), (24,1327.00 , 0.00 ), (25,0.00 , 0.00 ); SELECT * FROM acc_account_transactions;

ロードされたサンプルデータ

mysql> DROP DATABASE IF EXISTS abeersul; Query OK, 1 row affected (0.02 sec) mysql> CREATE DATABASE abeersul; Query OK, 1 row affected (0.00 sec) mysql> USE abeersul Database changed mysql> CREATE TABLE acc_account_transactions -> ( -> id INT NOT NULL AUTO_INCREMENT, -> account_no INT NOT NULL, -> debit_balance DOUBLE NOT NULL, -> credit_balance DOUBLE NOT NULL, -> PRIMARY KEY (id) -> ); Query OK, 0 rows affected (0.01 sec) mysql> INSERT INTO acc_account_transactions -> (account_no,debit_balance,credit_balance) VALUES -> (13,2578.19 , 0.00 ), -> (13,1500.00 , 0.00 ), -> (13,1500000.00 , 0.00 ), -> (13,1500.00 , 0.00 ), -> (14,1500000.00 , 0.00 ), -> (14,0.00 , 13500.00 ), -> (14,0.00 , 13500.00 ), -> (14,33458.43 , 0.00 ), -> (15,0.00 , 100000.00), -> (15,18506.34 , 0.00 ), -> (16,946.20 , 0.00 ), -> (17,90364.77 , 0.00 ), -> (21,0.00 , 0.00 ), -> (22,0.00 , 0.00 ), -> (23,0.00 , 0.00 ), -> (23,1105500.00 , 0.00 ), -> (24,1327.00 , 0.00 ), -> (25,0.00 , 0.00 ); Query OK, 18 rows affected (0.00 sec) Records: 18 Duplicates: 0 Warnings: 0 mysql> SELECT * FROM acc_account_transactions; +----+------------+---------------+----------------+ | id | account_no | debit_balance | credit_balance | +----+------------+---------------+----------------+ | 1 | 13 | 2578.19 | 0 | | 2 | 13 | 1500 | 0 | | 3 | 13 | 1500000 | 0 | | 4 | 13 | 1500 | 0 | | 5 | 14 | 1500000 | 0 | | 6 | 14 | 0 | 13500 | | 7 | 14 | 0 | 13500 | | 8 | 14 | 33458.43 | 0 | | 9 | 15 | 0 | 100000 | | 10 | 15 | 18506.34 | 0 | | 11 | 16 | 946.2 | 0 | | 12 | 17 | 90364.77 | 0 | | 13 | 21 | 0 | 0 | | 14 | 22 | 0 | 0 | | 15 | 23 | 0 | 0 | | 16 | 23 | 1105500 | 0 | | 17 | 24 | 1327 | 0 | | 18 | 25 | 0 | 0 | +----+------------+---------------+----------------+ 18 rows in set (0.00 sec) mysql>

提案されたクエリ内でサブクエリが実行されました

mysql> SELECT -> account_no -> ,COALESCE(debit_balance) as debits -> ,COALESCE(credit_balance) as credits -> ,(@running_balance := IF(@curr_account_no < account_no, 0,@running_balance)) prev_runnng_bal -> ,(@curr_account_no := IF(@curr_account_no < account_no,account_no,@curr_account_no)) curr_account_no -> ,(@running_balance := @running_balance + (acc_account_transactions.debit_balance - acc_account_transactions.credit_balance)) as balance -> FROM acc_account_transactions, -> (SELECT @running_balance := 0,@curr_account_no := 0) r -> ORDER BY account_no; +------------+----------+---------+-----------------+-----------------+------------+ | account_no | debits | credits | prev_runnng_bal | curr_account_no | balance | +------------+----------+---------+-----------------+-----------------+------------+ | 13 | 1500 | 0 | 0 | 13 | 1500 | | 13 | 1500000 | 0 | 1500 | 13 | 1501500 | | 13 | 1500 | 0 | 1501500 | 13 | 1503000 | | 13 | 2578.19 | 0 | 1503000 | 13 | 1505578.19 | | 14 | 1500000 | 0 | 0 | 14 | 1500000 | | 14 | 0 | 13500 | 1500000 | 14 | 1486500 | | 14 | 0 | 13500 | 1486500 | 14 | 1473000 | | 14 | 33458.43 | 0 | 1473000 | 14 | 1506458.43 | | 15 | 18506.34 | 0 | 0 | 15 | 18506.34 | | 15 | 0 | 100000 | 18506.34 | 15 | -81493.66 | | 16 | 946.2 | 0 | 0 | 16 | 946.2 | | 17 | 90364.77 | 0 | 0 | 17 | 90364.77 | | 21 | 0 | 0 | 0 | 21 | 0 | | 22 | 0 | 0 | 0 | 22 | 0 | | 23 | 0 | 0 | 0 | 23 | 0 | | 23 | 1105500 | 0 | 0 | 23 | 1105500 | | 24 | 1327 | 0 | 0 | 24 | 1327 | | 25 | 0 | 0 | 0 | 25 | 0 | +------------+----------+---------+-----------------+-----------------+------------+ 18 rows in set (0.00 sec) mysql>

提案されたクエリが実行されました

mysql> SELECT account_no,debits,credits,balance FROM -> (SELECT -> account_no -> ,COALESCE(debit_balance) as debits -> ,COALESCE(credit_balance) as credits -> ,(@running_balance := IF(@curr_account_no < account_no, 0,@running_balance)) prev_runnng_bal -> ,(@curr_account_no := IF(@curr_account_no < account_no,account_no,@curr_account_no)) curr_account_no -> ,(@running_balance := @running_balance + (acc_account_transactions.debit_balance - acc_account_transactions.credit_balance)) as balance -> FROM acc_account_transactions,(SELECT @running_balance := 0,@curr_account_no := 0) r -> ORDER BY account_no) A; +------------+----------+---------+------------+ | account_no | debits | credits | balance | +------------+----------+---------+------------+ | 13 | 1500 | 0 | 1500 | | 13 | 1500000 | 0 | 1501500 | | 13 | 1500 | 0 | 1503000 | | 13 | 2578.19 | 0 | 1505578.19 | | 14 | 1500000 | 0 | 1500000 | | 14 | 0 | 13500 | 1486500 | | 14 | 0 | 13500 | 1473000 | | 14 | 33458.43 | 0 | 1506458.43 | | 15 | 18506.34 | 0 | 18506.34 | | 15 | 0 | 100000 | -81493.66 | | 16 | 946.2 | 0 | 946.2 | | 17 | 90364.77 | 0 | 90364.77 | | 21 | 0 | 0 | 0 | | 22 | 0 | 0 | 0 | | 23 | 0 | 0 | 0 | | 23 | 1105500 | 0 | 1105500 | | 24 | 1327 | 0 | 1327 | | 25 | 0 | 0 | 0 | +------------+----------+---------+------------+ 18 rows in set (0.01 sec) mysql>