[Hadoop big data] - detailed explanation of Hive connection JOIN use case
http://www.cnblogs.com/xing901022/p/5804836.html
Clear table data
insert overwrite table t_table1 select * from t_table1 where 1=0;
build table
create table test_part (id int,name string,no int) partitioned by (dt string) row format delimited fields terminated by '\t' stored as textfile ;
Parameter passing example in hive
http://blog.sina.com.cn/s/blog_7097d08d0102wc9d.html
hive -e "select * from database_name.table_name where p_log_date= '${e_date}' limit 10;"
#Execute the hql script with the -f option
hive -hivevar where_date=$s_date -f test.sql
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The following is the content of test.sql:
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select * from database_name.table_name where p_log_date >= '${where_date}' limit 10;
#!/bin/sh
echo `date +%Y-%m-%d`
echo `date --date="-24 hour" +%Y-%m-%d`
echo $cur
for=2
database=default
#hive -e "use ${database}; select * from test2;" > log.txt
hive -hivevar tid=$para -f test.sql > log.txt
echo 'successfully'