【判断题】【消耗次数：1】
执行命令 list field 编号,名称for 启用日期<{^1990/12/31}, 将显示表中1990年以后启用的设备的编号、名称
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执行命令“select * from sb order by 价格 DESC,启用日期 asc”，将查询表中所有设备的基本情况,查询结果按价格降序排,价格相同再按启用日期升序排
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