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数据库实例之错误

Jun 07, 2016 pm 03:15 PM
Appear Example database mistake

上周把五个实例弄完了,出现了一些错误,有的错误犯得极其低级,敲代码最注重的是细心啊! 实例一 :strSQL = SELECT 口令 FROM 系统用户 WHERE用户名=' UserName ', 错误原因: 没加单引号而是双引号, 第 1 个双引号实际上会 和第 2 个双引号配套 所以错误

           上周把五个实例弄完了,出现了一些错误,有的错误犯得极其低级,敲代码最注重的是细心啊!

            实例一: strSQL = "SELECT 口令 FROM 系统用户 WHERE用户名='" & UserName & "'",    错误原因:没加单引号而是双引号,1个双引号实际上会   和第2个双引号配套所以错误就出现了.,以及口令前面没加空格。

       实例二:在开始程序中打开数据源管理器找不到自己想要的MicrosoftAccess Driver(*.mdb).

     数据库实例之错误

     

     数据库实例之错误

    打开C:\Windows\SysWOW64里面有个odbcad32.exe打开就可以设置access的数据源了,具体原因还在查询中。

    实例三:没有出现什么大的错误,关键在于细心啊。

    实例四:

    数据库实例之错误

     数据库实例之错误

    说明数据库中没有找到身份这个项目,在数据源中加入身份这个项目就可以了.

        实例五:

       数据库实例之错误

    原因出现在下面画红框的地方设置的太小。

   数据库实例之错误

   经过这几周的学习,对数据库有了一定的了解,还要继续努力去学习啊。

 

 

 

   

 

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