left join 关联查询 一对多 重复数据处理

left join 关联查询 一对多 重复数据处理

-- 修改前sql
SELECT DISTINCT
	a.QYMC,
	a.XYDM,
	a.DZ,
	a.FW,
	a.XKZBH,
	a.JGJG,
	a.FZJG,
	a.QFR,
	a.FZRQ_DATE,
	a.YXQZ_DATE,
	a.TYPE,
	c.facilityName,
c.facilityLocation
FROM
	COMPANY_BASE a
LEFT JOIN company_drug_product b ON a.UUID = b.COMPANYBASEUUID
left join employee c on a.UUID = c.COMPANYBASEUUID and c.isdel=0 and c.mark=9
WHERE
	a.QYLX = 3
AND a.ISDEL = 0

AND (
	ifnull(a.QYMC, '') = ''
	OR ifnull(a.XYDM, '') = ''
	OR ifnull(a.DZ, '') = ''
	OR ifnull(a.FW, '') = ''
	OR ifnull(a.XKZBH, '') = ''
	OR ifnull(a.JGJG, '') = ''
	OR ifnull(a.FZJG, '') = ''
	OR ifnull(a.QFR, '') = ''
	OR ifnull(a.FZRQ_DATE, '') = ''
	OR ifnull(a.YXQZ_DATE, '') = ''
	OR ifnull(a.TYPE, '') = ''
	OR ifnull(b.FR, '') = ''
	OR ifnull(b.FZR, '') = ''
	OR ifnull(c.facilityName, '') = ''
)
ORDER BY
	a.YXQ_DATE DESC,
	a.id DESC

-- 修改后sql
SELECT DISTINCT
	a.QYMC,
	a.XYDM,
	a.DZ,
	a.FW,
	a.XKZBH,
	a.JGJG,
	a.FZJG,
	a.QFR,
	a.FZRQ_DATE,
	a.YXQZ_DATE,
	a.TYPE,
	c.facilityName,
c.facilityLocation
FROM
	COMPANY_BASE a
LEFT JOIN company_drug_product b ON a.UUID = b.COMPANYBASEUUID
LEFT JOIN (select COMPANYBASEUUID,fullName from employee where isdel = 0 and mark = 9 GROUP BY COMPANYBASEUUID) as c on c.COMPANYBASEUUID = a.UUID
WHERE
	a.QYLX = 3
AND a.ISDEL = 0

AND (
	ifnull(a.QYMC, '') = ''
	OR ifnull(a.XYDM, '') = ''
	OR ifnull(a.DZ, '') = ''
	OR ifnull(a.FW, '') = ''
	OR ifnull(a.XKZBH, '') = ''
	OR ifnull(a.JGJG, '') = ''
	OR ifnull(a.FZJG, '') = ''
	OR ifnull(a.QFR, '') = ''
	OR ifnull(a.FZRQ_DATE, '') = ''
	OR ifnull(a.YXQZ_DATE, '') = ''
	OR ifnull(a.TYPE, '') = ''
	OR ifnull(b.FR, '') = ''
	OR ifnull(b.FZR, '') = ''
	OR ifnull(c.facilityName, '') = ''
)
ORDER BY
	a.YXQ_DATE DESC,
	a.id DESC