Dropping multiple tables with same prefix in Hive
There is no such thing as regular expressions for drop query in hive (or i didn't find them). But there are multipe ways to do it, for example :
With a shell script :
hive -e "show tables 'temp_*'" | xargs -I '{}' hive -e 'drop table {}'Or by putting your tables in a specific database and dropping the whole database.
Create table temp.table_name;Drop database temp cascade;
Above solutions are good. But if you have more tables to delete, then running 'hive -e drop table' is slow. So, I used this:
hive -e 'use db;show tables' | grep pattern > file.hqluse vim editor to open file.hql and run below commands
:%s!^!drop table :%s!$!;then run
hive -f file.hqlThis approach will be much faster.