mysql中如何查询表的第一条和最后一条记录
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2022-05-20 09:58:05
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无详细内容 无 SELECT createdtime FROM `Z_2015-09-15` WHERE deviceid='460040271516782' limit 1;SELECT createdtime FROM `Z_2015-09-15` WHERE deviceid='460040271516782' order by id DESC limit 1;
SELECT createdtime FROM `Z_2015-09-15` WHERE deviceid='460040271516782' limit 1; SELECT createdtime FROM `Z_2015-09-15` WHERE deviceid='460040271516782' order by id DESC limit 1;
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