ERROR 1054 (42S22): Unknown column ... in 'on clause'原因:MySQL5.0 Bug,要把联合的表用括号包含起来才行:例:Sql代码SELECT(c.id,a.id,b.id)FROMAa,BbLEFTJOINCcONc.a_id=a.a_idAN...
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数据库 时间:
2015-04-27 21:40:55
阅读次数:
918
1 题目Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2).You are given a target val...
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其他好文 时间:
2015-04-27 18:18:50
阅读次数:
92
Search in Rotated Sorted Array
难度:HardSuppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).You are given a target value to search...
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编程语言 时间:
2015-04-27 16:57:54
阅读次数:
251
1、错误描述
10:28:20 alter table user modify age int(3) after sex Error Code: 1054. Unknown column 'age' in 'user' 0.000 sec
2、错误原因
原本在user表中有age字段,但是在测试阶段删除了,后期将age位置修改,所以报错
3、解决办法
首先,...
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其他好文 时间:
2015-04-26 10:54:02
阅读次数:
476
出现 这个错误:
com.caucho.config.ConfigException: -server 'default'
is an unknown server in the configuration file.
at com.caucho.server.resin.Resin.initTopology(Resin.java:1070)
at com.caucho.server.r...
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系统相关 时间:
2015-04-25 18:25:46
阅读次数:
255
Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).You are given a target valu...
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其他好文 时间:
2015-04-24 15:42:26
阅读次数:
154
DescriptionSevere acute respiratory syndrome (SARS), an atypical pneumonia of unknown aetiology, was recognized as a global threat in mid-March 2003. ...
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其他好文 时间:
2015-04-23 19:36:42
阅读次数:
124
今天在linux服务器上编译安装升级了下qemu,升级命令如下:root@ubuntu:/opt/qemu-2.0.0# ./configure --prefix=/usr/local/ --target-list=x86_64-softmmuroot@ubuntu:/opt/qemu-2.0.0....
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其他好文 时间:
2015-04-22 20:25:31
阅读次数:
434
题目描述Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).Find the minimum element.这里需要理解一个概念什么为Rotated Sorted Array。根据题目描述,Rotated...
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其他好文 时间:
2015-04-22 18:23:25
阅读次数:
125
Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2).Find the minimum element.You m...
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其他好文 时间:
2015-04-22 13:30:51
阅读次数:
96