materialized view definition is
> select
> sum(o_totalprice) as sum_total,
> max(o_totalprice) as max_total,
> min(o_totalprice) as min_total,
> count(*) as count_all,
> bitmap_union(to_bitmap(case when o_shippriority > 1 and o_orderkey IN (1, 3) then o_custkey else null end)) >cnt_1,
> bitmap_union(to_bitmap(case when o_shippriority > 2 and o_orderkey IN (2) then o_custkey else null end)) as >cnt_2
> from lineitem
> left join orders on l_orderkey = o_orderkey and l_shipdate = o_orderdate;
the query following can be rewritten by materialized view above.
it use the aggregate fuction arithmetic calculation in the select
> select
> count(distinct case when O_SHIPPRIORITY > 2 and o_orderkey IN (2) then o_custkey else null end) as cnt_2,
> (sum(o_totalprice) + min(o_totalprice)) * count(*),
> min(o_totalprice) + count(distinct case when O_SHIPPRIORITY > 2 and o_orderkey IN (2) then o_custkey else null >end)
> from lineitem
> left join orders on l_orderkey = o_orderkey and l_shipdate = o_orderdate;
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