本来要写一个文档,中间用程序判断某列是否存在,不存在的话则添加,存在就不处理直接显示一个结果就可以,写的程序如下:if exists ( select * from information_schema.columns where table_name = "flow_process" and column_name ="X_test2" AND table_schema = 'TD_OA' ...
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数据库 时间:
2015-01-26 19:24:16
阅读次数:
163
ASFTableViewA customizable Web like multi column table view for iOS with header and inner rows.一个类似于网络表格样式的tableView,cell中内置了不同的列.USAGE(使用):#import "A...
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其他好文 时间:
2015-01-25 20:52:39
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146
Select SyntaxWHERE ClauseALL and DISTINCT ClausesPartition Based QueriesHAVING ClauseLIMIT ClauseREGEX Column SpecificationMore Select SyntaxGROUP BYS...
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其他好文 时间:
2015-01-25 20:50:31
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289
DescribeDescribe DatabaseDescribe Table/View/ColumnDisplay Column StatisticsDescribe PartitionDescribe DatabaseVersion informationIconAs of Hive 0.7.D...
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其他好文 时间:
2015-01-24 22:34:56
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519
题目:Given amxnmatrix, if an element is 0, set its entire row and column to 0. Do it in place.click to show follow up.Follow up:Did you use extra space?...
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编程语言 时间:
2015-01-24 21:12:54
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192
SELECT Sysobjects.name AS TABLE_NAME , syscolumns.Id , syscolumns.name AS COLUMN_NAME , systypes.name AS DATA_TYPE , sysc...
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数据库 时间:
2015-01-24 13:00:53
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220
DBMS的分类DB2、Oracle、Microsoft SQL Server、Sybase SQLServer、Informix、MySQL数据库的结构元素库 database表 table列 column数据类型 datatype记录 record主键 primarykey索引 index表关联S...
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数据库 时间:
2015-01-24 10:13:37
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145
Linux awk UsageLinux awk UsageTable of Contents1. Sum a specific column:2. Sum the columns of the lines with additional conditions(starting with 7):3....
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系统相关 时间:
2015-01-23 22:46:35
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156
Excel Sheet Column Title2015.1.23 17:20Given a positive integer, return its corresponding column title as appear in an Excel sheet.For example: 1 -...
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其他好文 时间:
2015-01-23 19:49:35
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144
Excel Sheet Column Number2015.1.23 17:54Related to questionExcel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corres...
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其他好文 时间:
2015-01-23 19:44:00
阅读次数:
187