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                      MSSQLserver 查詢不重復記錄

                      SELECT * from
                      table_name as t1
                      WHERE? NOT EXISTS
                      ? ? ? ?(SELECT *
                      ? ? ? ?FROM? ? table_name? as t2
                      ? ? ? ?WHERE? ?t1.meeting_id=t2.meeting_id
                      ? ? ? ?AND? ? ?t1.id <> t2.id

                      ? ? ? ?)


                      以上查詢table_name中meeting_id不重復的信息。列id為主鍵不重復。

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