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数据库实例之错误

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Jun 07, 2016 pm 03:15 PM

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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,第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).

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：

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：

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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