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-- columns are the same, but the order is important create table x (a int2, b int8, c int2); create table y (a int8, b int2, c int2); insert into x select 0, 0, 0 from generate_series(1,100000); insert into y select 0, 0, 0 from generate_series(1,100000); select pg_size_pretty(pg_total_relation_size('x')), pg_size_pretty(pg_total_relation_size('y'));

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