将多个日期作为参数传递给Hive查询 [英] passing multiple dates as a paramters to Hive query
问题描述
我正在尝试将日期列表作为参数传递给我的配置单元查询.
I am trying to pass a list of dates as parameter to my hive query.
#!/bin/bash
echo "Executing the hive query - Get distinct dates"
var=`hive -S -e "select distinct substr(Transaction_date,0,10) from test_dev_db.TransactionUpdateTable;"`
echo $var
echo "Executing the hive query - Get the parition data"
hive -hiveconf paritionvalue=$var -e 'SELECT Product FROM test_dev_db.TransactionMainHistoryTable where tran_date in("${hiveconf:paritionvalue}");'
echo "Hive query - ends"
输出为:
Executing the hive query - Get distinct dates
2009-02-01 2009-04-01
Executing the hive query - Get the parition data
Logging initialized using configuration in file:/hive/conf/hive-log4j.properties
OK
Product1
Product1
Product1
Product1
Product1
Product1
Time taken: 0.523 seconds, Fetched: 6 row(s)
Hive query - ends
仅输入第一个日期作为输入.我想将日期设为('2009-02-01','2009-04-01') 注意:TransactionMainHistoryTable在tran_date列上以字符串类型进行了分区.
It's only taking only first date as input. I would like to pass my dates as ('2009-02-01','2009-04-01') Note:TransactionMainHistoryTable is partitioned on tran_date column with string type.
推荐答案
使用collect_set
收集不同值的数组,并使用定界符','
将其连接起来.这将产生没有外部引号2009-02-01','2009-04-01
的列表,并且在第二个脚本中也添加外部引号'
,或者您可以在第一个查询中添加它们.并且在执行内联sql(-e选项)时,您无需传递hiveconf变量,直接的shell变量替换将起作用.从文件(-f选项)执行脚本时,请使用hiveconf
Collect array of distinct values using collect_set
and concatenate it with delimiter ','
. This will produce list without outer quotes 2009-02-01','2009-04-01
and in the second script add outer quotes '
also, or you can add them in the first query. And when executing in inline sql (-e option) you do not need to pass hiveconf variable, direct shell variable substitution will work. Use hiveconf when you are executing script from file (-f option)
工作示例:
date_list=$(hive -S -e "select concat_ws('\',\'',collect_set(substr(dt,0,10))) from (select stack (2,'2017-01', '2017-02')as dt)s ;")
hive -e "select * from (select stack (2,'2017-01', '2017-02')as dt)s where dt in ('${date_list}');"
返回:
好
2017-01
2017-02
Time taken: 1.221 seconds, Fetched: 2 row(s)
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