本文為您介紹如何使用PyODPS進行條件查詢。
前提條件
請提前完成如下操作:
在DataWorks上完成商務程序建立,本例使用DataWorks簡單模式。詳情請參見建立商務程序。
操作步驟
建立表並匯入資料。
下載鳶尾花資料集iris.data,重新命名為iris.csv。
建立表pyodps_iris並上傳資料集iris.csv。操作方法請參見建表並上傳資料。
建表語句如下。
CREATE TABLE if not exists pyodps_iris ( sepallength DOUBLE comment '片長度(cm)', sepalwidth DOUBLE comment '片寬度(cm)', petallength DOUBLE comment '瓣長度(cm)', petalwidth DOUBLE comment '瓣寬度(cm)', name STRING comment '種類' );
- 登入DataWorks控制台。
在左側導覽列上單擊工作空間列表。
選擇操作列中的 。
在資料開發頁面,按右鍵已經建立的商務程序,選擇 。
在建立節點對話方塊,輸入節點名稱,並單擊確認。
在PyODPS節點輸入範例程式碼。
import sys reload(sys) #修改系統預設編碼。 sys.setdefaultencoding('utf8') iris = DataFrame(o.get_table('pyodps_iris')) #方法一:使用條件方式輸出。 with o.execute_sql('select * from pyodps_iris WHERE sepallength > 5 ').open_reader() as reader4: print reader4.raw for record in reader4: print record["sepallength"],record["sepalwidth"],record["petallength"],record["petalwidth"],record["name"] #方法二:使用ODPS的DataFrame的過濾條件得出資料結果。 print iris[iris.sepallength > 5].head(5) #方法三:使用query的方式輸出。 print iris.query("(sepallength < 5) and (petallength > 1.5)").head(5)
單擊。
在作業記錄中查看結果。
Executing user script with PyODPS 0.8.0 "sepallength","sepalwidth","petallength","petalwidth","name" 5.1,3.5,1.4,0.2,"Iris-setosa" 5.4,3.9,1.7,0.4,"Iris-setosa" 5.4,3.7,1.5,0.2,"Iris-setosa" 5.8,4.0,1.2,0.2,"Iris-setosa" 5.7,4.4,1.5,0.4,"Iris-setosa" 5.4,3.9,1.3,0.4,"Iris-setosa" 5.1,3.5,1.4,0.3,"Iris-setosa" 5.7,3.8,1.7,0.3,"Iris-setosa" 5.1,3.8,1.5,0.3,"Iris-setosa" 5.4,3.4,1.7,0.2,"Iris-setosa" 5.1,3.7,1.5,0.4,"Iris-setosa" 5.1,3.3,1.7,0.5,"Iris-setosa" 5.2,3.5,1.5,0.2,"Iris-setosa" 5.2,3.4,1.4,0.2,"Iris-setosa" 5.4,3.4,1.5,0.4,"Iris-setosa" 5.2,4.1,1.5,0.1,"Iris-setosa" 5.5,4.2,1.4,0.2,"Iris-setosa" 5.5,3.5,1.3,0.2,"Iris-setosa" 5.1,3.4,1.5,0.2,"Iris-setosa" 5.1,3.8,1.9,0.4,"Iris-setosa" 5.1,3.8,1.6,0.2,"Iris-setosa" 5.3,3.7,1.5,0.2,"Iris-setosa" 7.0,3.2,4.7,1.4,"Iris-versicolor" 6.4,3.2,4.5,1.5,"Iris-versicolor" 6.9,3.1,4.9,1.5,"Iris-versicolor" 5.5,2.3,4.0,1.3,"Iris-versicolor" 6.5,2.8,4.6,1.5,"Iris-versicolor" 5.7,2.8,4.5,1.3,"Iris-versicolor" 6.3,3.3,4.7,1.6,"Iris-versicolor" 6.6,2.9,4.6,1.3,"Iris-versicolor" 5.2,2.7,3.9,1.4,"Iris-versicolor" 5.9,3.0,4.2,1.5,"Iris-versicolor" 6.0,2.2,4.0,1.0,"Iris-versicolor" 6.1,2.9,4.7,1.4,"Iris-versicolor" 5.6,2.9,3.6,1.3,"Iris-versicolor" 6.7,3.1,4.4,1.4,"Iris-versicolor" 5.6,3.0,4.5,1.5,"Iris-versicolor" 5.8,2.7,4.1,1.0,"Iris-versicolor" 6.2,2.2,4.5,1.5,"Iris-versicolor" 5.6,2.5,3.9,1.1,"Iris-versicolor" 5.9,3.2,4.8,1.8,"Iris-versicolor" 6.1,2.8,4.0,1.3,"Iris-versicolor" 6.3,2.5,4.9,1.5,"Iris-versicolor" 6.1,2.8,4.7,1.2,"Iris-versicolor" 6.4,2.9,4.3,1.3,"Iris-versicolor" 6.6,3.0,4.4,1.4,"Iris-versicolor" 6.8,2.8,4.8,1.4,"Iris-versicolor" 6.7,3.0,5.0,1.7,"Iris-versicolor" 6.0,2.9,4.5,1.5,"Iris-versicolor" 5.7,2.6,3.5,1.0,"Iris-versicolor" 5.5,2.4,3.8,1.1,"Iris-versicolor" 5.5,2.4,3.7,1.0,"Iris-versicolor" 5.8,2.7,3.9,1.2,"Iris-versicolor" 6.0,2.7,5.1,1.6,"Iris-versicolor" 5.4,3.0,4.5,1.5,"Iris-versicolor" 6.0,3.4,4.5,1.6,"Iris-versicolor" 6.7,3.1,4.7,1.5,"Iris-versicolor" 6.3,2.3,4.4,1.3,"Iris-versicolor" 5.6,3.0,4.1,1.3,"Iris-versicolor" 5.5,2.5,4.0,1.3,"Iris-versicolor" 5.5,2.6,4.4,1.2,"Iris-versicolor" 6.1,3.0,4.6,1.4,"Iris-versicolor" 5.8,2.6,4.0,1.2,"Iris-versicolor" 5.6,2.7,4.2,1.3,"Iris-versicolor" 5.7,3.0,4.2,1.2,"Iris-versicolor" 5.7,2.9,4.2,1.3,"Iris-versicolor" 6.2,2.9,4.3,1.3,"Iris-versicolor" 5.1,2.5,3.0,1.1,"Iris-versicolor" 5.7,2.8,4.1,1.3,"Iris-versicolor" 6.3,3.3,6.0,2.5,"Iris-virginica" 5.8,2.7,5.1,1.9,"Iris-virginica" 7.1,3.0,5.9,2.1,"Iris-virginica" 6.3,2.9,5.6,1.8,"Iris-virginica" 6.5,3.0,5.8,2.2,"Iris-virginica" 7.6,3.0,6.6,2.1,"Iris-virginica" 7.3,2.9,6.3,1.8,"Iris-virginica" 6.7,2.5,5.8,1.8,"Iris-virginica" 7.2,3.6,6.1,2.5,"Iris-virginica" 6.5,3.2,5.1,2.0,"Iris-virginica" 6.4,2.7,5.3,1.9,"Iris-virginica" 6.8,3.0,5.5,2.1,"Iris-virginica" 5.7,2.5,5.0,2.0,"Iris-virginica" 5.8,2.8,5.1,2.4,"Iris-virginica" 6.4,3.2,5.3,2.3,"Iris-virginica" 6.5,3.0,5.5,1.8,"Iris-virginica" 7.7,3.8,6.7,2.2,"Iris-virginica" 7.7,2.6,6.9,2.3,"Iris-virginica" 6.0,2.2,5.0,1.5,"Iris-virginica" 6.9,3.2,5.7,2.3,"Iris-virginica" 5.6,2.8,4.9,2.0,"Iris-virginica" 7.7,2.8,6.7,2.0,"Iris-virginica" 6.3,2.7,4.9,1.8,"Iris-virginica" 6.7,3.3,5.7,2.1,"Iris-virginica" 7.2,3.2,6.0,1.8,"Iris-virginica" 6.2,2.8,4.8,1.8,"Iris-virginica" 6.1,3.0,4.9,1.8,"Iris-virginica" 6.4,2.8,5.6,2.1,"Iris-virginica" 7.2,3.0,5.8,1.6,"Iris-virginica" 7.4,2.8,6.1,1.9,"Iris-virginica" 7.9,3.8,6.4,2.0,"Iris-virginica" 6.4,2.8,5.6,2.2,"Iris-virginica" 6.3,2.8,5.1,1.5,"Iris-virginica" 6.1,2.6,5.6,1.4,"Iris-virginica" 7.7,3.0,6.1,2.3,"Iris-virginica" 6.3,3.4,5.6,2.4,"Iris-virginica" 6.4,3.1,5.5,1.8,"Iris-virginica" 6.0,3.0,4.8,1.8,"Iris-virginica" 6.9,3.1,5.4,2.1,"Iris-virginica" 6.7,3.1,5.6,2.4,"Iris-virginica" 6.9,3.1,5.1,2.3,"Iris-virginica" 5.8,2.7,5.1,1.9,"Iris-virginica" 6.8,3.2,5.9,2.3,"Iris-virginica" 6.7,3.3,5.7,2.5,"Iris-virginica" 6.7,3.0,5.2,2.3,"Iris-virginica" 6.3,2.5,5.0,1.9,"Iris-virginica" 6.5,3.0,5.2,2.0,"Iris-virginica" 6.2,3.4,5.4,2.3,"Iris-virginica" 5.9,3.0,5.1,1.8,"Iris-virginica" 5.1 3.5 1.4 0.2 Iris-setosa 5.4 3.9 1.7 0.4 Iris-setosa 5.4 3.7 1.5 0.2 Iris-setosa 5.8 4.0 1.2 0.2 Iris-setosa 5.7 4.4 1.5 0.4 Iris-setosa 5.4 3.9 1.3 0.4 Iris-setosa 5.1 3.5 1.4 0.3 Iris-setosa 5.7 3.8 1.7 0.3 Iris-setosa 5.1 3.8 1.5 0.3 Iris-setosa 5.4 3.4 1.7 0.2 Iris-setosa 5.1 3.7 1.5 0.4 Iris-setosa 5.1 3.3 1.7 0.5 Iris-setosa 5.2 3.5 1.5 0.2 Iris-setosa 5.2 3.4 1.4 0.2 Iris-setosa 5.4 3.4 1.5 0.4 Iris-setosa 5.2 4.1 1.5 0.1 Iris-setosa 5.5 4.2 1.4 0.2 Iris-setosa 5.5 3.5 1.3 0.2 Iris-setosa 5.1 3.4 1.5 0.2 Iris-setosa 5.1 3.8 1.9 0.4 Iris-setosa 5.1 3.8 1.6 0.2 Iris-setosa 5.3 3.7 1.5 0.2 Iris-setosa 7.0 3.2 4.7 1.4 Iris-versicolor 6.4 3.2 4.5 1.5 Iris-versicolor 6.9 3.1 4.9 1.5 Iris-versicolor 5.5 2.3 4.0 1.3 Iris-versicolor 6.5 2.8 4.6 1.5 Iris-versicolor 5.7 2.8 4.5 1.3 Iris-versicolor 6.3 3.3 4.7 1.6 Iris-versicolor 6.6 2.9 4.6 1.3 Iris-versicolor 5.2 2.7 3.9 1.4 Iris-versicolor 5.9 3.0 4.2 1.5 Iris-versicolor 6.0 2.2 4.0 1.0 Iris-versicolor 6.1 2.9 4.7 1.4 Iris-versicolor 5.6 2.9 3.6 1.3 Iris-versicolor 6.7 3.1 4.4 1.4 Iris-versicolor 5.6 3.0 4.5 1.5 Iris-versicolor 5.8 2.7 4.1 1.0 Iris-versicolor 6.2 2.2 4.5 1.5 Iris-versicolor 5.6 2.5 3.9 1.1 Iris-versicolor 5.9 3.2 4.8 1.8 Iris-versicolor 6.1 2.8 4.0 1.3 Iris-versicolor 6.3 2.5 4.9 1.5 Iris-versicolor 6.1 2.8 4.7 1.2 Iris-versicolor 6.4 2.9 4.3 1.3 Iris-versicolor 6.6 3.0 4.4 1.4 Iris-versicolor 6.8 2.8 4.8 1.4 Iris-versicolor 6.7 3.0 5.0 1.7 Iris-versicolor 6.0 2.9 4.5 1.5 Iris-versicolor 5.7 2.6 3.5 1.0 Iris-versicolor 5.5 2.4 3.8 1.1 Iris-versicolor 5.5 2.4 3.7 1.0 Iris-versicolor 5.8 2.7 3.9 1.2 Iris-versicolor 6.0 2.7 5.1 1.6 Iris-versicolor 5.4 3.0 4.5 1.5 Iris-versicolor 6.0 3.4 4.5 1.6 Iris-versicolor 6.7 3.1 4.7 1.5 Iris-versicolor 6.3 2.3 4.4 1.3 Iris-versicolor 5.6 3.0 4.1 1.3 Iris-versicolor 5.5 2.5 4.0 1.3 Iris-versicolor 5.5 2.6 4.4 1.2 Iris-versicolor 6.1 3.0 4.6 1.4 Iris-versicolor 5.8 2.6 4.0 1.2 Iris-versicolor 5.6 2.7 4.2 1.3 Iris-versicolor 5.7 3.0 4.2 1.2 Iris-versicolor 5.7 2.9 4.2 1.3 Iris-versicolor 6.2 2.9 4.3 1.3 Iris-versicolor 5.1 2.5 3.0 1.1 Iris-versicolor 5.7 2.8 4.1 1.3 Iris-versicolor 6.3 3.3 6.0 2.5 Iris-virginica 5.8 2.7 5.1 1.9 Iris-virginica 7.1 3.0 5.9 2.1 Iris-virginica 6.3 2.9 5.6 1.8 Iris-virginica 6.5 3.0 5.8 2.2 Iris-virginica 7.6 3.0 6.6 2.1 Iris-virginica 7.3 2.9 6.3 1.8 Iris-virginica 6.7 2.5 5.8 1.8 Iris-virginica 7.2 3.6 6.1 2.5 Iris-virginica 6.5 3.2 5.1 2.0 Iris-virginica 6.4 2.7 5.3 1.9 Iris-virginica 6.8 3.0 5.5 2.1 Iris-virginica 5.7 2.5 5.0 2.0 Iris-virginica 5.8 2.8 5.1 2.4 Iris-virginica 6.4 3.2 5.3 2.3 Iris-virginica 6.5 3.0 5.5 1.8 Iris-virginica 7.7 3.8 6.7 2.2 Iris-virginica 7.7 2.6 6.9 2.3 Iris-virginica 6.0 2.2 5.0 1.5 Iris-virginica 6.9 3.2 5.7 2.3 Iris-virginica 5.6 2.8 4.9 2.0 Iris-virginica 7.7 2.8 6.7 2.0 Iris-virginica 6.3 2.7 4.9 1.8 Iris-virginica 6.7 3.3 5.7 2.1 Iris-virginica 7.2 3.2 6.0 1.8 Iris-virginica 6.2 2.8 4.8 1.8 Iris-virginica 6.1 3.0 4.9 1.8 Iris-virginica 6.4 2.8 5.6 2.1 Iris-virginica 7.2 3.0 5.8 1.6 Iris-virginica 7.4 2.8 6.1 1.9 Iris-virginica 7.9 3.8 6.4 2.0 Iris-virginica 6.4 2.8 5.6 2.2 Iris-virginica 6.3 2.8 5.1 1.5 Iris-virginica 6.1 2.6 5.6 1.4 Iris-virginica 7.7 3.0 6.1 2.3 Iris-virginica 6.3 3.4 5.6 2.4 Iris-virginica 6.4 3.1 5.5 1.8 Iris-virginica 6.0 3.0 4.8 1.8 Iris-virginica 6.9 3.1 5.4 2.1 Iris-virginica 6.7 3.1 5.6 2.4 Iris-virginica 6.9 3.1 5.1 2.3 Iris-virginica 5.8 2.7 5.1 1.9 Iris-virginica 6.8 3.2 5.9 2.3 Iris-virginica 6.7 3.3 5.7 2.5 Iris-virginica 6.7 3.0 5.2 2.3 Iris-virginica 6.3 2.5 5.0 1.9 Iris-virginica 6.5 3.0 5.2 2.0 Iris-virginica 6.2 3.4 5.4 2.3 Iris-virginica 5.9 3.0 5.1 1.8 Iris-virginica Sql compiled: CREATE TABLE tmp_pyodps_xxxx LIFECYCLE 1 AS SELECT * FROM xxx.`pyodps_iris` t1 WHERE t1.`sepallength` > 5 Instance ID: 2019xxxx Log view: http://logview.odps.aliyun.com/logview/?h=http://service.cn.maxcompute.aliyun.com/api&p=xxxx&i=2019xxxx&token=xxxx sepallength sepalwidth petallength petalwidth name 0 5.1 3.5 1.4 0.2 Iris-setosa 1 5.4 3.9 1.7 0.4 Iris-setosa 2 5.4 3.7 1.5 0.2 Iris-setosa 3 5.8 4.0 1.2 0.2 Iris-setosa 4 5.7 4.4 1.5 0.4 Iris-setosa Sql compiled: CREATE TABLE tmp_pyodps_xxxx LIFECYCLE 1 AS SELECT * FROM xxxx.`pyodps_iris` t1 WHERE (t1.`sepallength` < 5) AND (t1.`petallength` > 1.5) Instance ID: 2019xxxx Log view: http://logview.odps.aliyun.com/logview/?h=http://service.cn.maxcompute.aliyun.com/api&p=xxxx&i=2019xxxx&token=xxxx sepallength sepalwidth petallength petalwidth name 0 4.8 3.4 1.6 0.2 Iris-setosa 1 4.8 3.4 1.9 0.2 Iris-setosa 2 4.7 3.2 1.6 0.2 Iris-setosa 3 4.8 3.1 1.6 0.2 Iris-setosa 4 4.9 2.4 3.3 1.0 Iris-versicolor