English 中文(简体)
单价,视单元内容的一部分而定
原标题:mysql sum depending on a part of a cell s content

页: 1

id    value     ref
1       0        10000
2       5        11000
3       5        11100
4       2        11101
5       2        11102
6      10        12000
...    ...         ....

How can i achieve this:

ref    sum(value)
10000   14         <-- 5 + 5 + 2 + 2
11000   9          <-- 5 + 2 + 2
11100   4          <-- 2 + 2
12000   10         <-- and so on

如果这种淡化是有效的,那么我可以决定,它会赢得一些工作,或一米没有东西。

我没有任何q问向你们说谎。

可能的话? ......

任何帮助都将受到高度赞赏。

最佳回答

在将<代码>contentsum替换为您的表格的真正名称之后,这或许有助于你:

select rpad(main.prefix, 5, 0) as ref, sum(contentsum.value) as total
    from (select distinct trim(trailing  0  from ref) as prefix from contentsum) as main
    join contentsum on contentsum.ref like concat(main.prefix,  % )
    group by main.prefix
;

However, its totals don t match yours. Instead, they match what I thought you were adding up when I first read the question.

基本上,关键在于日本海洋研究网络就<条码>ref的数值的某些功能进行表态,由左侧进行分类,并接手右侧。 舱位等于并减少一些代码重复,但如果<代码>ref,则严格需要。 价值观都是独特的。

问题回答

暂无回答




相关问题
SQL SubQuery getting particular column

I noticed that there were some threads with similar questions, and I did look through them but did not really get a convincing answer. Here s my question: The subquery below returns a Table with 3 ...

please can anyone check this while loop and if condition

<?php $con=mysql_connect("localhost","mts","mts"); if(!con) { die( unable to connect . mysql_error()); } mysql_select_db("mts",$con); /* date_default_timezone_set ("Asia/Calcutta"); $date = ...

php return a specific row from query

Is it possible in php to return a specific row of data from a mysql query? None of the fetch statements that I ve found return a 2 dimensional array to access specific rows. I want to be able to ...

Character Encodings in PHP and MySQL

Our website was developed with a meta tag set to... <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> This works fine for M-dashes and special quotes, etc. However, I ...

Pagination Strategies for Complex (slow) Datasets

What are some of the strategies being used for pagination of data sets that involve complex queries? count(*) takes ~1.5 sec so we don t want to hit the DB for every page view. Currently there are ~...

Averaging a total in mySQL

My table looks like person_id | car_id | miles ------------------------------ 1 | 1 | 100 1 | 2 | 200 2 | 3 | 1000 2 | 4 | 500 I need to ...

热门标签