Select * from movierating
给出 NULL 值作为结果。
我在下面尝试过创建表查询:
CREATE TABLE movierating(id INT, movieid INT, rating INT, time string);
CREATE TABLE movierating(id INT, movieid INT, rating INT, time string) ROW FORMAT DELIMITED FIELDS TERMINATED BY ' ' stored as textfile;
尝试以下负载查询:
load data local inpath '/tmp/Movie-rating.txt' into table movierating;
load data local inpath '/tmp/Movie-rating.txt' OVERWRITE into table movierating;
数据到“Movie-rating.txt”文件中:(分隔符是标签)
1 123 3 881250949
2 125 4 881250123