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:x |
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:o |
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select |
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o_year, |
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sum(decode(nation, ':1', volume, 0)) / sum(volume) as mkt_share |
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from |
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( |
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select |
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extract(year from o_orderdate) as o_year, |
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l_extendedprice * (1-l_discount) as volume, |
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n2.n_name as nation |
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from |
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part, |
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supplier, |
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lineitem, |
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orders, |
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customer, |
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nation n1, |
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nation n2, |
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region |
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where |
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p_partkey = l_partkey |
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and s_suppkey = l_suppkey |
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and l_orderkey = o_orderkey |
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and o_custkey = c_custkey |
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and c_nationkey = n1.n_nationkey |
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and n1.n_regionkey = r_regionkey |
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and r_name = ':2' |
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and s_nationkey = n2.n_nationkey |
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and o_orderdate between date '1995-01-01' and date '1996-12-31' |
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and p_type = ':3' |
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) all_nations |
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group by |
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o_year |
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order by |
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o_year; |
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:n -1 |
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