13 lines
567 B
SQL
13 lines
567 B
SQL
-- 查询目前所有空调中的最高温度与最低温度与历史最高低温
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SELECT
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(SELECT MAX(temperature) FROM air_conditioner
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WHERE "on" = TRUE AND NOT frozen AND NOT burnt) AS max,
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(SELECT MIN(temperature) FROM air_conditioner
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WHERE "on" = TRUE AND NOT frozen AND NOT burnt) AS min,
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(SELECT MAX(temperature) FROM air_conditioner_log
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WHERE "on" = TRUE AND NOT frozen AND NOT burnt) AS his_max,
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(SELECT MIN(temperature) FROM air_conditioner_log
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WHERE "on" = TRUE AND NOT frozen AND NOT burnt) AS his_min; |