SELECT * into #TMP FROM A WHERE counttime='2020-09-28 00:00:00'
UPDATE #TMP SET CountTime='20200927'
INSERT INTO aSELECT * FROM #TMP
DROP TABLE #TMP
SELECT * into #TMP FROM A WHERE counttime='2020-09-28 00:00:00'
UPDATE #TMP SET CountTime='20200927'
INSERT INTO aSELECT * FROM #TMP
DROP TABLE #TMP
本文标题：同一个表里的数据再复制一条
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