Question

CREATE TABLE my_table ( bank_account, bank_id, amount ) AS
SELECT 123, 600, 1500 FROM DUAL UNION ALL
SELECT 123, 600, 2500 FROM DUAL UNION ALL
SELECT 123, 600, 3500 FROM DUAL UNION ALL
SELECT 123, 700,  500 FROM DUAL UNION ALL
SELECT 123, 700, 1000 FROM DUAL UNION ALL
SELECT 456, 800, 2000 FROM DUAL UNION ALL
SELECT 456, 900, 2000 FROM DUAL UNION ALL
SELECT 456, 900, 4000 FROM DUAL;

我需要编写SQL代码，其结果如下：

其中：
total_amount - 在特定bank_id中进行的所有交易bank_account的总和
number_of_transactions - bank_account在特定bank_id中进行的交易次数 total_num_trans - bank_account的交易总数
total_am_trans - bank_account所做的交易总额

我只是设法获得了我需要的一些结果，但无法全部获得。这与我的开始有关：

  SELECT t.bank_account
       , t.bank_id
       , count(*)       number_of_transactions
       , sum(t.amount)  total_amount
    FROM my_table t 
GROUP BY t.bank_account
       , t.bank_id
ORDER BY t.bank_account

感谢。

Answer 1

Oracle安装程序：

CREATE TABLE my_table ( bank_account, bank_id, amount ) AS
SELECT 123, 600, 1500 FROM DUAL UNION ALL
SELECT 123, 600, 2500 FROM DUAL UNION ALL
SELECT 123, 600, 3500 FROM DUAL UNION ALL
SELECT 123, 700,  500 FROM DUAL UNION ALL
SELECT 123, 700, 1000 FROM DUAL UNION ALL
SELECT 456, 800, 2000 FROM DUAL UNION ALL
SELECT 456, 900, 2000 FROM DUAL UNION ALL
SELECT 456, 950, 4000 FROM DUAL;

<强>查询：

SELECT bank_account,
       bank_id,
       total_amount,
       number_of_transactions,
       SUM( number_of_transactions ) OVER ( PARTITION BY bank_account ) AS total_num_trans,
       SUM( total_amount           ) OVER ( PARTITION BY bank_account ) AS total_am_trans,
       number_of_transactions
         / SUM( number_of_transactions ) OVER ( PARTITION BY bank_account )
         * 100 AS percentage_trans,
       total_amount
         / SUM( total_amount           ) OVER ( PARTITION BY bank_account )
         * 100 AS percentage_trans
FROM   (
  SELECT   bank_account,
           bank_id,
           count(*)    AS number_of_transactions,
           sum(amount) AS total_amount
  FROM     my_table
  GROUP BY bank_account
         , bank_id
)

<强>输出：

BANK_ACCOUNT    BANK_ID TOTAL_AMOUNT NUMBER_OF_TRANSACTIONS TOTAL_NUM_TRANS TOTAL_AM_TRANS PERCENTAGE_TRANS PERCENTAGE_TRANS
------------ ---------- ------------ ---------------------- --------------- -------------- ---------------- ----------------
         123        600         7500                      3               5           9000               60       83.3333333 
         123        700         1500                      2               5           9000               40       16.6666667 
         456        800         2000                      1               3           8000       33.3333333               25 
         456        900         2000                      1               3           8000       33.3333333               25 
         456        950         4000                      1               3           8000       33.3333333               50

Answer 2

试试这个;）

select t1.*, t2.total_num_trans, t2.total_am_trans, (t1.number_of_transactions / t2.total_num_trans) * 100 as percentage_trans, (t1.total_amount / t2.total_am_trans) * 100 as percentage_amount
from (
    select bank_account, bank_id, sum(amount) as total_amount, count(1) as number_of_transactions
        from my_table
        group by bank_account, bank_id) t1
left join (
    select bank_account, sum(total_amount) as total_am_trans, sum(number_of_transactions) as total_num_trans
    from (
        select bank_account, bank_id, sum(amount) as total_amount, count(1) as number_of_transactions
        from my_table
        group by bank_account, bank_id ) t
group by bank_account ) t2 on t1.bank_account = t2.bank_account
order by t1.bank_account

Answer 3

尝试加入2个聚合，粗略的只有银行帐户分组，更精细的分组也是银行ID。

      SELECT tfine.bank_account
           , tfine.bank_id
           , tfine.total_amount
           , tfine.number_of_transactions
           , tcoarse.total_num_trans
           , tcoarse.total_am_trans
        FROM (              
                  SELECT t1.bank_account
                       , t1.bank_id
                       , count(*)         number_of_transactions
                       , sum(t1.amount)   total_amount
                    FROM my_table t1 
                GROUP BY t1.bank_account
                       , t1.bank_id
             ) tfine
        JOIN (
                  SELECT t2.bank_account
                       , count(*)         total_num_trans
                       , sum(t2.amount)   total_am_trans
                    FROM my_table t2
                GROUP BY t2.bank_account
             ) tcoarse
          ON tcoarse.bank_account = tfine.bank_account
    ORDER BY tfine.bank_account
           , tfine.bank_id
           ;

在线演示on ideone。

如何使用SUM和COUNT并将结果添加为结果列

3 个答案: