在VB 2010中访问查询

Question

我有以下选择查询，我需要转换为删除查询以删除重复项。

麻烦的是我似乎无法让删除部分工作。在“查询”构建器中，这将选择我需要删除的记录。

SELECT [Field1], [Field2], [Field3], [Field4], COUNT([Field4]) AS CountOfDuplicates
FROM MyTable
GROUP BY [Field1], [Field2], [Field3],[Field4]
HAVING (COUNT([Field4])>1)

将SELECT更改为DELETE会导致错误'Missing FROM Clause'

由于

Answer 1

不是我原本想做的，但我选择了这个选项。创建另一个表以通过SELECT * INTO表FROM表GROUP BY *

删除重复项

这将删除重复的行。

SELECT [Field1], [Field2], [Field3], [Field4]
INTO tempTable
FROM MyTable
GROUP BY [Field1], [Field2], [Field3],[Field4];


DELETE * FROM MyTable;

INSERT INTO MyTable SELECT tempTable.* FROM tempTable;