DROP TABLE IF EXISTS lineitem;
DROP TABLE IF EXISTS q6_forecast_revenue_change;

-- create tables and load data
create external table lineitem (L_ORDERKEY INT, L_PARTKEY INT, L_SUPPKEY INT, L_LINENUMBER INT, L_QUANTITY DOUBLE, L_EXTENDEDPRICE DOUBLE, L_DISCOUNT DOUBLE, L_TAX DOUBLE, L_RETURNFLAG STRING, L_LINESTATUS STRING, L_SHIPDATE STRING, L_COMMITDATE STRING, L_RECEIPTDATE STRING, L_SHIPINSTRUCT STRING, L_SHIPMODE STRING, L_COMMENT STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY '|' STORED AS TEXTFILE LOCATION '/tpch/lineitem';

-- create the target table
create table q6_forecast_revenue_change (revenue double);

-- the query
insert overwrite table q6_forecast_revenue_change 
select 
  sum(l_extendedprice*l_discount) as revenue
from 
  lineitem
where 
  l_shipdate >= '1994-01-01'
  and l_shipdate < '1995-01-01'
  and l_discount >= 0.05 and l_discount <= 0.07
  and l_quantity < 24;