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sql删除重复数据

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Original file line number	Diff line number	Diff line change
`@@ -31,3 +31,7 @@ select DepartmentID,DepartmentName from BasicDepartment group by DepartmentID`
`31`	`31`
`32`	`32`
`33`	`33`	`***********************************************************************************************`
	`34`	`+更复杂的重复删除:属性中有相同的字段`
	`35`	`+1、想将属性通过单列转多行得到新的表`
	`36`	`+2、再删除重复数据`
	`37`	`+3、再利用GROUP BY CONCAT回复成原表`

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