![](/img/trans.png)
[英]SQL - How to select data row with Maximum value within a specific column?
[英]How to select specific value for certain column in one SQL ROW
我有很多行,其中的不同列包含不同的值,但是我只有一个列-DATA,如何在行中找到特定的列值,看起来像
14000000PA1420000000PMP1 14200003093090006185211010012 240614000000250614 BUDAPEST VODAFONE POSTPAID PAYM 2030001025010000002660000348HUFFORINT 2506144261230042061365 0000000050 000000266000034800000026600003480000002660000348DALLOS SZILÁRD 022220049111250507201406250 000000266000042612314176001 000490836HU739900000000125050140625 fcbmc22.176
例如我需要第三列,它表示14200(10位到15位)
我知道SUSBSTR,但是它在其他行中的位置不同,所以我不知道每个位置,
谢谢。
Third_column := substr(your_string, 11, 5)
似乎是一个简单的子字符串问题...
Select substr('14000000PA1420000000PMP1 14200003093090006185211010012 240614000000250614 BUDAPEST VODAFONE POSTPAID PAYM 2030001025010000002660000348HUFFORINT 2506144261230042061365 0000000050 000000266000034800000026600003480000002660000348DALLOS SZILÁRD 022220049111250507201406250 000000266000042612314176001 000490836HU739900000000125050140625 fcbmc22.176',11,5) as Col3
FROM DUAL;
产量:
Col3
14200
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.