douhe4336 2015-03-11 13:17
浏览 251

sql查询从两个表中过滤数据

Table name - scheme_master

column name - book_no2,receipt_no

Table name - book_issue

column name - book_no

Table name - book_return

column name - used_receipt

I need to select only those receipt_no from scheme master whose book is created on book issue table.. and receipt_no which is not present in book_return table.

FOR EX -

DATA in scheme_master

Book_no2     receipt_no

1         -     10

1         -     11

2         -     14

2         -     15

3         -     18

3         -     19

DATE IN Book_issue table

Book_no

3

book        used_receipt

3               18

DATA in book_return table

In above example there are 3 books created in scheme master table 1,2,3 with diff. receipt OK.

BUT in Book issue table we allot only book no 3.

AND in Book return table we used only receipt no 18.

So i need to select all only receipt no 19 of book 3 from scheme master table...

-plz help to get this...

Below is my query it works fine ...

But this takes lot of time to select records...

FOR EX -it takes more than 6 minutes to Fetch from 30 records...

  SELECT DISTINCT SM.receipt_no 
  FROM scheme_master SM 
  Inner join book_issue BI ON BI.book_no = SM.Book_no2  
  where 
  SM.receipt_no not in (select used_receipt from book_return)
  • 写回答

2条回答 默认 最新

  • douduo2407 2015-03-11 13:30
    关注

    Hope this will help you.

    SELECT sm.receipt_no FROM scheme_master as sm, book_return as br
    INNER JOIN book_issue as bi ON sm.book_no2 = bi.book_no
    WHERE sm.receipt_no != br.used_receipt
    
    评论

报告相同问题?

悬赏问题

  • ¥15 C++使用Gunplot
  • ¥15 这个电路是如何实现路灯控制器的,原理是什么,怎么求解灯亮起后熄灭的时间如图?
  • ¥15 matlab数字图像处理频率域滤波
  • ¥15 在abaqus做了二维正交切削模型,给刀具添加了超声振动条件后输出切削力为什么比普通切削增大这么多
  • ¥15 ELGamal和paillier计算效率谁快?
  • ¥15 file converter 转换格式失败 报错 Error marking filters as finished,如何解决?
  • ¥15 Arcgis相交分析无法绘制一个或多个图形
  • ¥15 关于#r语言#的问题:差异分析前数据准备,报错Error in data[, sampleName1] : subscript out of bounds请问怎么解决呀以下是全部代码:
  • ¥15 seatunnel-web使用SQL组件时候后台报错,无法找到表格
  • ¥15 fpga自动售货机数码管(相关搜索:数字时钟)