时间:2021-03-11 10:08:00 | 栏目:Shell | 点击:次
脚本tt.sh的内容如下:
#!/bin/bash params=$1 for param in $params do echo $param done
运行方式为:sh tt.sh "1 2 3 4 5"
输出为:
1 2 3 4 5
所以参考上面的命令,可以把hql的脚本写为如下方式,就可以循环执行sql:
功能:查找字符串 comments 中的param第一次出现的位置 ,返回的是位置数字
#!/bin/bash params=$1 for param in $params do hive -e "insert overwrite local directory '/tmp/$param' row format delimited fields terminated by '\t' select locate('$param',comments) as position from tb_a;" done
功能:查找评论中出现关键字的内容,没有关键词的内容过滤掉
#!/bin/bash params=$1 for param in $params do hive -e "insert overwrite local directory '/tmp/$param' row format delimited fields terminated by '\t' select position from (select locate('$param',comments) as position from tb_a where position != '0') a where a.position !='0' ;" done