配置單元 - 按年份劃分

Question

我按配置單元劃分年份。我創建了一個腳本：

DROP TABLE movies_byYear; 

CREATE TABLE movies_byYear (title STRING, full_name STRING, ep_name STRING, type STRING, ep_num STRING, suspended BOOLEAN) PARTITIONED BY (year INT) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' STORED AS TEXTFILE; 

INSERT OVERWRITE TABLE movies_byYear PARTITION (year='2013') SELECT title, full_name, ep_name, type, ep_num, suspended FROM movies WHERE year='2013'; 

然而，當使用：SELECT COUNT(*) FROM movies WHERE year='2013';

我沒有得到由2013年回所有的電影，而不是我得到的所有電影回來。

是否有可能讓蜂房決定在哪裏進行分區？

我真的很感謝你的回答！

UPDATE

當添加year我得到：

INSERT OVERWRITE TABLE movies_byYear PARTITION (year=2013) SELECT title, full_name, ep_name, type, ep_num, suspended, year FROM movies WHERE year=2013; 

FAILED: SemanticException [Error 10044]: Line 1:23 Cannot insert into target table because column number/types are different '2013': Table insclause-0 has 6 columns, but query has 7 columns. 

Answer 1

插入時，可以插入：

SELECT title, full_name, ep_name, type, ep_num, suspended 

添加年到...目前您year場movies_byYear爲空...

當您在配置單元的創建表語句中指定分區year時，year將成爲表格中的一列！

UPDATE

替換此

INSERT OVERWRITE TABLE movies_byYear PARTITION (year='2013') SELECT title, full_name, ep_name, type, ep_num, suspended FROM movies WHERE year='2013';

與此：

INSERT OVERWRITE TABLE movies_byYear PARTITION (year=2013) SELECT title, full_name, ep_name, type, ep_num, suspended FROM movies WHERE year='2013';

也就是說，去掉單引號括起來的年份值在分區...