(SELECT 'tA' AS tablen, tableid, value, time FROM tA)
UNION ALL
(SELECT 'tB' AS tablen, tableid, value, time FROM tB)
UNION ALL
(SELECT tC AS tablen, tableid, value, time FROM tC)
ORDER BY time
UNION ALL
(SELECT 'tB' AS tablen, tableid, value, time FROM tB)
UNION ALL
(SELECT tC AS tablen, tableid, value, time FROM tC)
ORDER BY time
解决方案 »
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