查詢oracle數據庫是否有重複數據（根據多個字段判斷）

時間 2019-11-07

標籤查詢 oracle 數據庫是否重複數據根據多個字段判斷欄目 Oracle 简体版

原文原文鏈接

根據多個字段查詢重複數據的總條數：python

sql = "select count(*) from tablea a where (a.askname, a.atime) in (select askname,atime from tablea group by askname,atime having count(*)>1) and askrepid not in (select min(askrepid) from tablea group by askname,atime having count(*)>1)"
cursor.execute(sql)
conn.commit()
tables = cursor.fetchall()
print 'result*********:',tables