小编JSH*_*jan的帖子

我试图从多个表中获取数据,但不知道如何做到这一点.下面是我正在使用的查询,但它不起作用.请建议.

SELECT DISTINCT 
        VWL.Type, VWL.ID AS CompanyID,VWL.Name
    FROM dbo.LeadList_New AS VWL 
    LEFT OUTER JOIN
        CASE VWL.Type WHEN 'COMPANY' THEN
            CRMCompanyEmailAddress AS CE ON VWL.ID=CE.CRMCompanyID
        WHEN 'PERSON' THEN
            PersonEmailAddress AS PE ON VWL.ID=PE.PersonID
        END