Hive 在配置单元中查询映射值
我在蜂巢里有一张桌子,每小时都会通过Spark/Parquet更新一次Hive 在配置单元中查询映射值,hive,Hive,我在蜂巢里有一张桌子,每小时都会通过Spark/Parquet更新一次 CREATE TABLE IF NOT EXISTS user ( name STRING, creation_date DATE, cards map<STRING,STRING> ) STORED AS PARQUET ; 结果是这样的 KillerZord1001 2016-01-02 {"Archer":"2",&qu
CREATE TABLE IF NOT EXISTS user
(
name STRING,
creation_date DATE,
cards map<STRING,STRING>
) STORED AS PARQUET ;
结果是这样的
KillerZord1001 2016-01-02 {"Archer":"2","Gobelin":"6"}
HalfAMill 2016-02-05 {"Witch":"7","Gobelin":"8"}
但我想要的是我正在寻找的钥匙的价值,更像:
KillerZord1001 2016-01-02 6
HalfAMill 2016-02-05 8
Hive可以执行这样的查询吗?您只需执行
SELECT name, creation_date, card["Gobelin"] FROM USER
WHERE card["Gobelin"] IS NOT NULL
SELECT name, creation_date, card["Gobelin"] FROM USER
WHERE card["Gobelin"] IS NOT NULL