0
A
回答
1
你应该尝试:
Select *
From(
SELECT *
FROM myTableOne
GROUP BY myCol1
) firstTable
LEFT JOIN myTableTwo secondTable ON
firstTable.idColumn = secondTable.idColumn
哪里myTableOne是由组选择和myTableTwo是要留下参加关于
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是的,你可以:)表 – NikNik