38 lines
879 B
SQL
38 lines
879 B
SQL
create table list (n integer, v real);
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insert into list values (0, 90);
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insert into list values (1, 47);
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insert into list values (2, 58);
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insert into list values (3, 29);
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insert into list values (4, 22);
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insert into list values (5, 32);
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insert into list values (6, 55);
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insert into list values (7, 5);
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insert into list values (8, 55);
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insert into list values (9, 73);
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create view diff1 as select list.n, (select next.v from list as next where next.n = list.n + 1) - list.v as v from list;
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create view diff2 as select list.n, (select next.v from diff1 as next where next.n = list.n + 1) - list.v as v from diff1 as list;
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select * from diff1;
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0|-43.0
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1|11.0
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2|-29.0
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3|-7.0
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4|10.0
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5|23.0
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6|-50.0
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7|50.0
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8|18.0
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9|
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select * from diff2;
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0|54.0
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1|-40.0
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2|22.0
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3|17.0
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4|13.0
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5|-73.0
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6|100.0
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7|-32.0
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8|
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9|
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