在我使用MSSQL之前,但在一个新项目中,我使用mysql,当我运行我们的应用程序时,我得到这个错误CompilationErrorDescription:Anerroroccurredduringthecompilationofaresourcerequiredtoservicethisrequest.Pleasereviewthefollowingspecificerrordetailsandmodifyyoursourcecodeappropriately.CompilerErrorMessage:CS0246:Thetypeornamespacename'MySql'could
我有一个这样的.csv文件数据Date,Name,CallType,Number,Duration,Address,PostalCode,City,State,Country,Latitude,Longitude"Sep-18-201301:53:45PM","Unknown","outgoingcall",'123456',"0Secs","null","null","null","null","null",0.0,0.0,,,"Sep-18-201301:54:14PM","Unknown","outgoingcall",'1234567890',"0Secs","null","n
我有一个这样的.csv文件数据Date,Name,CallType,Number,Duration,Address,PostalCode,City,State,Country,Latitude,Longitude"Sep-18-201301:53:45PM","Unknown","outgoingcall",'123456',"0Secs","null","null","null","null","null",0.0,0.0,,,"Sep-18-201301:54:14PM","Unknown","outgoingcall",'1234567890',"0Secs","null","n
尝试将平面文件数据库转储中的数据加载到新表中时,我遇到了权限错误。我知道文件的架构和我的表是相同的,我尝试调整权限。我还应该尝试什么?mysql>loaddatainfile'myfile.txt'intotablemytablefieldsterminatedby','enclosedby'"';ERROR1045(28000):Accessdeniedforuser'user'@'%'grantallonmytable.*to'user'@'% 最佳答案 Here'sathread在MySQL论坛上讨论这个问题。这是答案,由Ke
尝试将平面文件数据库转储中的数据加载到新表中时,我遇到了权限错误。我知道文件的架构和我的表是相同的,我尝试调整权限。我还应该尝试什么?mysql>loaddatainfile'myfile.txt'intotablemytablefieldsterminatedby','enclosedby'"';ERROR1045(28000):Accessdeniedforuser'user'@'%'grantallonmytable.*to'user'@'% 最佳答案 Here'sathread在MySQL论坛上讨论这个问题。这是答案,由Ke
我正在使用此查询来生成博客存档菜单,如下所示:SELECTCONCAT(MONTHNAME(published),'',YEAR(published))ASmonthyear,COUNT(*)AStotalFROMblog_articlesWHEREstatus='Online'ANDYear(published)=2012GROUPBYCONCAT(MONTHNAME(published),'',YEAR(published))预期结果:January2012103February201287March201223April201299实际结果:计数是正确的,但不是东方精神,它应该是
我正在使用此查询来生成博客存档菜单,如下所示:SELECTCONCAT(MONTHNAME(published),'',YEAR(published))ASmonthyear,COUNT(*)AStotalFROMblog_articlesWHEREstatus='Online'ANDYear(published)=2012GROUPBYCONCAT(MONTHNAME(published),'',YEAR(published))预期结果:January2012103February201287March201223April201299实际结果:计数是正确的,但不是东方精神,它应该是
我需要根据某些条件使用加载数据文件更新表中的现有行,这可能吗?loaddatainfile'E:/xxx.csv'intotabletld_tod@aaa,@xxx_date,@cccfieldsterminatedby','LINESTERMINATEDBY'\r\n'setxxx=str_to_date(@xxx_date,'%d-%b-%y')wherexxxisnotnullandaaa=@aaa 最佳答案 您还可以创建一个暂存表,将CSV文件中的数据插入到暂存表中,然后通过所需的操作和过滤将数据最终插入到您的目标表中。CR
我需要根据某些条件使用加载数据文件更新表中的现有行,这可能吗?loaddatainfile'E:/xxx.csv'intotabletld_tod@aaa,@xxx_date,@cccfieldsterminatedby','LINESTERMINATEDBY'\r\n'setxxx=str_to_date(@xxx_date,'%d-%b-%y')wherexxxisnotnullandaaa=@aaa 最佳答案 您还可以创建一个暂存表,将CSV文件中的数据插入到暂存表中,然后通过所需的操作和过滤将数据最终插入到您的目标表中。CR
我需要使用group_concat来构建逗号分隔值的列表,但我需要引用这些值。我该怎么做?这个:425,254,431,53,513,13,1,13应转换为:'425','254','431','53','513','13','1','13' 最佳答案 用途:GROUP_CONCAT(CONCAT('''',your_column,'''')) 关于sql-如何使用group_concat引用值,我们在StackOverflow上找到一个类似的问题: http