Topik ini menjelaskan cara melakukan kueri bersyarat di PyODPS.
Prasyarat
Sebelum memulai, pastikan Anda telah menyelesaikan tugas-tugas berikut:
Anda telah mengaktifkan MaxCompute.
Anda telah mengaktifkan DataWorks.
Anda telah membuat alur kerja di DataWorks. Prosedur dalam topik ini didasarkan pada ruang kerja DataWorks yang menggunakan mode dasar dan belum bergabung dalam pratinjau publik DataStudio.
Prosedur
Unduh set data uji dan impor ke MaxCompute.
Unduh dan ekstrak set data Iris, lalu ubah nama file iris.data menjadi iris.csv.
Buat tabel bernama pyodps_iris dan unggah set data iris.csv. Untuk informasi selengkapnya, lihat Buat tabel dan unggah data.
Pernyataan berikut digunakan untuk membuat tabel.
CREATE TABLE if not exists pyodps_iris ( sepallength DOUBLE comment 'sepal length (cm)', sepalwidth DOUBLE comment 'sepal width (cm)', petallength DOUBLE comment 'petal length (cm)', petalwidth DOUBLE comment 'petal width (cm)', name STRING comment 'type' );
- Masuk ke Konsol DataWorks.
Di panel navigasi kiri, klik Workspaces.
Di kolom Actions, pilih .
Pada halaman Data Development, klik kanan alur dan pilih .
Pada kotak dialog Create Node, masukkan nama node dan klik Confirm.
Masukkan kode berikut di node PyODPS.
import sys reload(sys) # Ubah encoding default sistem. sys.setdefaultencoding('utf8') iris = DataFrame(o.get_table('pyodps_iris')) # Metode 1: Mengembalikan output berdasarkan suatu kondisi. 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"] # Metode 2: Mendapatkan hasil data menggunakan kondisi filter dari ODPS DataFrame. print iris[iris.sepallength > 5].head(5) # Metode 3: Mengembalikan output menggunakan metode query. print iris.query("(sepallength < 5) and (petallength > 1.5)").head(5)Klik
.
Anda dapat melihat hasilnya di Log.
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