摘要:
oracle 求标准偏差:select STDdEV(column1) from (select 50 column1 from dualunion select 90 from dualunion select 70 from dual) ttsqlserver 里求标准偏差:select STDEV(column1) from (select 50 column1 union select 9... 阅读全文
posted @ 2009-07-24 16:07
左少白
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