hive建立分割槽表，以當天日期（“2014-08-15”）作為分割槽依據，hql如下：

CREATE EXTERNAL TABLE IF NOT EXISTS product_sell(
category_id BIGINT,
province_id BIGINT,
product_id BIGINT,
price DOUBLE,
sell_num BIGINT
)
PARTITIONED BY (ds string)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY '\t'
LINES TERMINATED BY '\n'
STORED AS TEXTFILE;
 

然後以日期作為分割槽依據，插入資料，shell指令碼如下：

#!/bin/bash
source /etc/profile;

yesterday=$(date -d '-1 day' '+%Y-%m-%d')
lastweek=$(date -d '-1 week' '+%Y-%m-%d')

/usr/local/cloud/hive/bin/hive<<EOF 
INSERT OVERWRITE TABLE product_sell PARTITION (ds='$yesterday') select a.category_id, b.good_receiver_province_id as province_id, a.id as product_id, (b.sell_amount/b.sell_num) as price, b.sell_num from product a join (select si.product_id, s.good_receiver_province_id, sum(si.order_item_amount) sell_amount, sum(si.order_item_num) sell_num from so_item si join so s on (si.order_id=s.id) where si.is_gift=0 and si.is_hidden=0 and si.ds between '$lastweek' and '$yesterday' group by s.good_receiver_province_id, si.product_id) b on (a.id=b.product_id);
EOF
 

這個部分難點在於hive中不知道如何呼叫形如shell日期變數的方式建立日期分割槽，mark一下！