我使用的软件将只允许我进入的地方.SQL语句的部分。然而,SELECT DISTINCT Left([PR].[WBS1],5)&"-000" AS WBS1GROUP BY Left([PR].[WBS1],5), Right([PR].[WBS1],3), PR.Status
HAVING ((Right(PR.WBS1,3)<>
给定时间戳数据,我想计算过去4-6天的某些变量的中位数。过去1-3天的中位数可以由pd.pandas.DataFrame.rolling计算,但我找不到如何使用滚动来计算过去4-6天的中位数。6 days2 2011-014-6 days
6 2011-01-02 12:00:00 1.744812 NaN #
我将一个旧软件(使用MS-ACCESS MDB)转换为mySQL。我有一个查询需要很长时间才能运行(实际上,我在等待5分钟后就中断了运行),我该如何编写它?SELECT pa_ID, pa_PRODUCT_ID, pr_ID,pr_NAME,Sum(pa_KILOS) as IN_KILOS,
(select sum(pl_KILOS) fromPOLHSH.pl_PARALABH_ID = pa_ID) as OUT_KILOS From PARALABH, PRODUCTS WHERE pa_company_id=1 GROU