forked from huawei/openGauss-server
176 lines
3.2 KiB
SQL
176 lines
3.2 KiB
SQL
set current_schema=vector_engine;
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set enable_vector_engine=on;
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-- turn on early free policy.
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set enable_early_free=on;
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-- tpch Q5, HashJoin
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set enable_nestloop=off;
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set enable_mergejoin=off;
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set enable_hashjoin=on;
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explain (costs off) select
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n_name,
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sum(l_extendedprice * (1 - l_discount)) as revenue
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from
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customer,
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orders,
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lineitem,
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supplier,
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nation,
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region
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where
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c_custkey = o_custkey
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and l_orderkey = o_orderkey
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and l_suppkey = s_suppkey
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and c_nationkey = s_nationkey
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and s_nationkey = n_nationkey
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and n_regionkey = r_regionkey
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and r_name = 'ASIA'
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and o_orderdate >= '1994-01-01'::date
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and o_orderdate < '1994-01-01'::date + interval '1 year'
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group by
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n_name
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order by
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revenue desc;
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select
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n_name,
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sum(l_extendedprice * (1 - l_discount)) as revenue
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from
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customer,
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orders,
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lineitem,
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supplier,
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nation,
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region
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where
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c_custkey = o_custkey
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and l_orderkey = o_orderkey
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and l_suppkey = s_suppkey
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and c_nationkey = s_nationkey
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and s_nationkey = n_nationkey
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and n_regionkey = r_regionkey
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and r_name = 'ASIA'
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and o_orderdate >= '1994-01-01'::date
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and o_orderdate < '1994-01-01'::date + interval '1 year'
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group by
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n_name
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order by
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revenue desc;
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-- tpch Q5, MergeJoin
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set enable_nestloop=off;
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set enable_mergejoin=on;
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set enable_hashjoin=off;
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explain (costs off) select
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n_name,
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|
sum(l_extendedprice * (1 - l_discount)) as revenue
|
|
from
|
|
customer,
|
|
orders,
|
|
lineitem,
|
|
supplier,
|
|
nation,
|
|
region
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|
where
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|
c_custkey = o_custkey
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|
and l_orderkey = o_orderkey
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and l_suppkey = s_suppkey
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and c_nationkey = s_nationkey
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and s_nationkey = n_nationkey
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and n_regionkey = r_regionkey
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and r_name = 'ASIA'
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and o_orderdate >= '1994-01-01'::date
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and o_orderdate < '1994-01-01'::date + interval '1 year'
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group by
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n_name
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order by
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revenue desc;
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select
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n_name,
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sum(l_extendedprice * (1 - l_discount)) as revenue
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|
from
|
|
customer,
|
|
orders,
|
|
lineitem,
|
|
supplier,
|
|
nation,
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|
region
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|
where
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|
c_custkey = o_custkey
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|
and l_orderkey = o_orderkey
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and l_suppkey = s_suppkey
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and c_nationkey = s_nationkey
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and s_nationkey = n_nationkey
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and n_regionkey = r_regionkey
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and r_name = 'ASIA'
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and o_orderdate >= '1994-01-01'::date
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and o_orderdate < '1994-01-01'::date + interval '1 year'
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group by
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n_name
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order by
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revenue desc;
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-- tpch Q5, NestLoop
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set enable_nestloop=on;
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set enable_mergejoin=off;
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set enable_hashjoin=off;
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explain (costs off) select
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n_name,
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|
sum(l_extendedprice * (1 - l_discount)) as revenue
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|
from
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|
customer,
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|
orders,
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|
lineitem,
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|
supplier,
|
|
nation,
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|
region
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|
where
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|
c_custkey = o_custkey
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|
and l_orderkey = o_orderkey
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and l_suppkey = s_suppkey
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and c_nationkey = s_nationkey
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and s_nationkey = n_nationkey
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and n_regionkey = r_regionkey
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and r_name = 'ASIA'
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and o_orderdate >= '1994-01-01'::date
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and o_orderdate < '1994-01-01'::date + interval '1 year'
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group by
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n_name
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order by
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revenue desc;
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select
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n_name,
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sum(l_extendedprice * (1 - l_discount)) as revenue
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from
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customer,
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|
orders,
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|
lineitem,
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|
supplier,
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|
nation,
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|
region
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where
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c_custkey = o_custkey
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and l_orderkey = o_orderkey
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and l_suppkey = s_suppkey
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and c_nationkey = s_nationkey
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and s_nationkey = n_nationkey
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and n_regionkey = r_regionkey
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and r_name = 'ASIA'
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and o_orderdate >= '1994-01-01'::date
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and o_orderdate < '1994-01-01'::date + interval '1 year'
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group by
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n_name
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order by
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revenue desc;
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