Question

I have two tables   Transaction Table :-         
1       txn_id                      
2       txn_issued_by  (mid)        
3       dist_id                 
4       amount                  
5       bank_name           
6       account_no          
7       ben_name            
8       ben_contact         
9       date_of_transaction         
10      date_of_txn_modify          
11      txn_status          
12      bank_response_code          
13      status      
14      modify_by           
15      comm_amount_agent           
16      comm_amount_distributor     
17      comm_amount_sadmin          
18      client_name         
19      client_number           
20      client_add          
21      txn_serial_no           
22      comment_by_moderator    

2)Member Table
   - mid name username photo

我只是想知道如何处理交易以获得所需的结果，例如......

获取金额525 t0 2500
获取金额2501 t0 5050之间的交易数量
获取金额5051 t0 10100
所有用户（用户智慧）我的代码是：

<?php
$q_c = "SELECT *,
      COUNT(txn_id) AS count_txn
    FROM TRANSACTION
    WHERE amount >= 525
      AND amount <= 2500
      AND txn_issued_by IN (
        SELECT mid
        FROM members
        )
    GROUP BY txn_issued_by";

$r_c = mysql_query($q_c) or die(mysql_error());
$row_c     = mysql_fetch_array($r_c);
$count_txn = $row_c['count_txn'];
?>

目标如下：

enter image description here

Answer 1

据我所知，您需要使用一个查询计算所有用户在给定金额范围内的多笔交易和金额总和。
在这种情况下，如下所示的查询可能有所帮助：

SELECT txn_issued_by,
  SUM( CASE WHEN amount BETWEEN 525 AND 2500 
       THEN 1 ELSE 0 END ) count_525_to_2500,
  SUM( CASE WHEN amount BETWEEN 2501 AND 5050 
       THEN 1 ELSE 0 END ) count_2501_to_5050,
  SUM( IF( amount BETWEEN 5051 AND 10100, 1, 0 )) count_5051_to_10100,
  COUNT(*) count_total,
  SUM( CASE WHEN amount BETWEEN 525 AND 2500 
       THEN amount ELSE 0 END ) amount_525_to_2500,
  SUM( CASE WHEN amount BETWEEN 2501 AND 5050 
       THEN amount  ELSE 0 END ) amount_2501_to_5050,
  SUM( CASE WHEN amount BETWEEN 5051 AND 10100 
       THEN amount  ELSE 0 END ) amount_5051_to_10100,
  SUM( amount ) amount_total
FROM Transaction
GROUP BY txn_issued_by;

查询使用CASE WHEN ... THEN ... END表达式，也可以使用IF函数（请注意查询中的SUM），但我个人更喜欢CASE WHEN，因为IF是特定于MySql，而CASE WHEN符合ANSII SQL并在大多数数据库上运行。

以下查询计算所有记录的总值：

SELECT 
  SUM( CASE WHEN amount BETWEEN 525 AND 2500 
       THEN 1 ELSE 0 END ) count_525_to_2500,
  SUM( CASE WHEN amount BETWEEN 2501 AND 5050 
       THEN 1 ELSE 0 END ) count_2501_to_5050,
  SUM( IF( amount BETWEEN 5051 AND 10100, 1, 0 )) count_5051_to_10100,
  COUNT(*) count_total,
  SUM( CASE WHEN amount BETWEEN 525 AND 2500 
       THEN amount ELSE 0 END ) amount_525_to_2500,
  SUM( CASE WHEN amount BETWEEN 2501 AND 5050 
       THEN amount  ELSE 0 END ) amount_2501_to_5050,
  SUM( CASE WHEN amount BETWEEN 5051 AND 10100 
       THEN amount  ELSE 0 END ) amount_5051_to_10100,
  SUM( amount ) amount_total
FROM Transaction;

演示 - ＆gt; http://www.sqlfiddle.com/#!2/c017b/11

根据发布的交易获得所有用户的佣金

1 个答案: