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我有 2 个表，其中一个存储零售商信息（商店名称、地址、邮政编码）然后我有一个联系人表，其中存储个人详细信息名称、电话、电子邮件地址。

我正在导出数据，但因为我可能有多个零售商的联系人，所以导出会为每个联系人/零售商复制行。

例如：
Another Retailer, 26 Lime Street,London,Anna Triffo,0207 4932678,anna@another.com
Another Retailer, 26 Lime Street,London,Jane Hall,,

我想做的是在单独的列中为每个联系人位置，即：RetailerName，TradingName，AddressLine1，AddressLine2，AddressLine3，AddressLine4，Town，Country，Contact1，Contact2，Contact3，Contact4，Tel1，Tel2，Tel3，Tel4 ,电子邮件1 电子邮件2, 电子邮件3

所以上面的例子看起来像：
Another Retailer, 26 Lime Street,London,Anna Triffo,0207 4932678,anna@another.com,Jane Hall,,

输出将是：
HeadOffice_YN、HeadOfficeId_N_R、ReferenceId、RetailerName、TradingName AddressLine1、AddressLine2、Contact1、Tel1、Email1、Contact2、Tel2、Email2、IBAN、BIC Rebate、RebateCalc、VATRegNo

和我的选择：

SELECT 
OL_HO_YN as 'HeadOffice_YN', 
SageX3ID as 'HeadOfficeId_N_R', 
tblBusinessPartner.BP_ID as 'ReferenceId', 
BP_NAME,
OL_NAME as 'RetailerName', 
OL_FULL_NAME as 'TradingName',
 @num_street_lines := 1 + LENGTH(OL_ADDRESS) - LENGTH(REPLACE(OL_ADDRESS, '\n', '')) AS num_street_lines,
    SUBSTRING_INDEX(OL_ADDRESS, '\n', 1) AS AddressLine1,
    IF(@num_street_lines > 1, SUBSTRING_INDEX(SUBSTRING_INDEX(OL_ADDRESS, '\n', 2), '\n', -1), '') AS AddressLine2,
    IF(@num_street_lines > 2, SUBSTRING_INDEX(SUBSTRING_INDEX(OL_ADDRESS, '\n', 3), '\n', -1), '') AS AddressLine3,
    RetailerCountry.CO_NAME as 'Country',
    if(OL_TOWN Is Null, '', OL_TOWN) AS 'Town', 
    if(BP_CREATED_DATE is null,'',BP_CREATED_DATE) as 'DateJoined_D',
    if(Contact.LastName is Null, Contact.FirstName, concat(Contact.FirstName, ' ', Contact.LastName)) as Contact1,
    Contact.TelNo as 'Tel1' , Contact.EmailAddress as 'Email1',
    #Add More Contact Details here
    BP_IBAN as 'IBAN', 
    BP_BIC as 'BIC',
    BP_REBATE as 'Rebate',
    tblCheckCodes.CC_Description as 'RebateCalc',
    OL_VAT_REG_NO as 'VATRegNo'

 FROM gbtfco_GBTF003L.tblBusinessPartner
join tblOutlet on BP_ID = OL_HO_BP_ID
join tblTerminal on OL_ID = TE_OL_ID
join tblCountry RetailerCountry on OL_CO_ID = CO_ID
join tblCheckCodes on tblBusinessPartner.BP_REBATE_CALC = tblCheckCodes.CC_CheckCode
left join ContactDetails Contact on tblOutlet.OL_ID = Contact.OL_ID

谢谢达伦
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