Question

我收到错误[错误] 1066 - 不是唯一的表/别名：＆＃39; vtiger_leadscf＆＃39;

UPDATE vtigerdb.vtiger_leadscf
JOIN vtiger_new.vtiger_leaddetails ON vtiger_new.vtiger_leadscf.leadid = vtiger_new.vtiger_leaddetails.leadid
JOIN vtiger_new.vtiger_leadaddress ON vtiger_new.vtiger_leadaddress.leadaddressid = vtiger_new.vtiger_leadscf.leadid
JOIN vtiger_new.vtiger_crmentity ON vtiger_new.vtiger_crmentity.crmid = vtiger_new.vtiger_leadscf.leadid
JOIN vtiger_new.vtiger_users ON vtiger_new.vtiger_users.id = vtiger_new.vtiger_crmentity.smcreatorid
JOIN vtigerdb.vtiger_leadscf ON vtigerdb.vtiger_leadscf.leadid = vtiger_new.vtiger_leadscf.leadid
SET vtigerdb.vtiger_leadscf.cf_953 = CONCAT(vtiger_new.vtiger_users.first_name,' ',vtiger_new.vtiger_users.last_name)
WHERE vtigerdb.vtiger_leadscf.leadid = vtiger_new.vtiger_leadscf.leadid
AND cf_953 = ""

无法弄清楚它是什么问题。

Answer 1

上次加入和更新引用同一个表。使用JOIN table AS other_name可以避免此问题。

这是更正后的查询。另外我认为你在最后一次加入时意味着vtiger_new而不是你写的vtigerdb。

UPDATE vtigerdb.vtiger_leadscf
JOIN vtiger_new.vtiger_leaddetails ON vtiger_new.vtiger_leadscf.leadid = vtiger_new.vtiger_leaddetails.leadid
JOIN vtiger_new.vtiger_leadaddress ON vtiger_new.vtiger_leadaddress.leadaddressid = vtiger_new.vtiger_leadscf.leadid
JOIN vtiger_new.vtiger_crmentity ON vtiger_new.vtiger_crmentity.crmid = vtiger_new.vtiger_leadscf.leadid
JOIN vtiger_new.vtiger_users ON vtiger_new.vtiger_users.id = vtiger_new.vtiger_crmentity.smcreatorid
JOIN vtiger_new.vtiger_leadscf AS vlead ON vtigerdb.vtiger_leadscf.leadid = vlead.leadid
SET vtigerdb.vtiger_leadscf.cf_953 = CONCAT(vtiger_new.vtiger_users.first_name,' ',vtiger_new.vtiger_users.last_name)
WHERE vtigerdb.vtiger_leadscf.leadid = vlead.leadid
AND cf_953 = ""

从不同的数据库加入时，mysql中不是唯一的表/别名

1 个答案: