Question

我想在python中使用timestamp-value作为MySQL查询的变量。

tsmin = 1527573750;
tsmax = 1527574050;
command = "SELECT * FROM #CMD# WHERE data.#CMD#.TimesTamp BETWEEN 
          FROM_UNIXTIME(tsmin) AND FROM_UNIXTIME(tsmax)";

这会出现此错误：_mysql_exceptions.OperationalError：（1054，＆＃34;未知列＆＃39; tsmin＆＃39;在＆＃39; where子句＆＃39;＆＃34;）

当我使用以下命令时，它可以正常工作。

command = "SELECT * FROM #CMD# WHERE data.#CMD#.TimesTamp BETWEEN 
          FROM_UNIXTIME(1527573750) AND FROM_UNIXTIME(1527574050)"

任何可以帮助我的人？

Answer 1

f-strings （Python 3.6+）

tsmin = 1527573750;
tsmax = 1527574050;
command = f"SELECT * FROM #CMD# WHERE data.#CMD#.TimesTamp BETWEEN 
          FROM_UNIXTIME({tsmin}) AND FROM_UNIXTIME({tsmax})";

格式

tsmin = 1527573750;
tsmax = 1527574050;
command = "SELECT * FROM #CMD# WHERE data.#CMD#.TimesTamp BETWEEN 
          FROM_UNIXTIME({tsmin}) AND FROM_UNIXTIME({tsmax})".format(tsmin=tsmin, tsmax=tsmax);

时间戳作为sql查询中的变量

1 个答案: