import pandas as pdimport numpy as npfrom sklearn.model_selection import train_test_splitfrom sklearn.linear_model import LinearRegressionif __name__
一、sql中的判断：若有字段a值为-100 ~ 100需要查询结果负数一下为0；正数为1可用语句如下selectcase a >= 0 then 1else 0end as "字段1"二、sql中的替换：若有字段a有值0,1需要查询出结果0为否，1为是语句如下selectc
删除es.indices.delete(index='sales_index', ignore=[400, 404])
