228 lines
8.6 KiB
PL/PgSQL
228 lines
8.6 KiB
PL/PgSQL
--
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-- grouping sets
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--
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-- test data sources
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create temp view gstest1(a,b,v)
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as values (1,1,10),(1,1,11),(1,2,12),(1,2,13),(1,3,14),
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(2,3,15),
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(3,3,16),(3,4,17),
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(4,1,18),(4,1,19);
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create temp table gstest2 (a integer, b integer, c integer, d integer,
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e integer, f integer, g integer, h integer);
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copy gstest2 from stdin;
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1 1 1 1 1 1 1 1
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1 1 1 1 1 1 1 2
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1 1 1 1 1 1 2 2
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1 1 1 1 1 2 2 2
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1 1 1 1 2 2 2 2
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1 1 1 2 2 2 2 2
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1 1 2 2 2 2 2 2
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1 2 2 2 2 2 2 2
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2 2 2 2 2 2 2 2
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\.
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create temp table gstest3 (a integer, b integer, c integer, d integer);
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copy gstest3 from stdin;
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1 1 1 1
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2 2 2 2
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\.
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alter table gstest3 add primary key (a);
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create temp table gstest_empty (a integer, b integer, v integer);
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create function gstest_data(v integer, out a integer, out b integer)
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returns setof record
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as $f$
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begin
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return query select v, i from generate_series(1,3) i;
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end;
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$f$ language plpgsql;
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-- basic functionality
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-- simple rollup with multiple plain aggregates, with and without ordering
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-- (and with ordering differing from grouping)
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select a, b, grouping(a,b), sum(v), count(*), max(v)
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from gstest1 group by rollup (a,b);
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select a, b, grouping(a,b), sum(v), count(*), max(v)
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from gstest1 group by rollup (a,b) order by a,b;
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select a, b, grouping(a,b), sum(v), count(*), max(v)
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from gstest1 group by rollup (a,b) order by b desc, a;
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select a, b, grouping(a,b), sum(v), count(*), max(v)
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from gstest1 group by rollup (a,b) order by coalesce(a,0)+coalesce(b,0);
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-- various types of ordered aggs
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select a, b, grouping(a,b),
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array_agg(v order by v),
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string_agg(v::text, ':' order by v desc),
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percentile_disc(0.5) within group (order by v),
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rank(1,2,12) within group (order by a,b,v)
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from gstest1 group by rollup (a,b) order by a,b;
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-- test usage of grouped columns in direct args of aggs
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select grouping(a), a, array_agg(b),
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rank(a) within group (order by b nulls first),
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rank(a) within group (order by b nulls last)
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from (values (1,1),(1,4),(1,5),(3,1),(3,2)) v(a,b)
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group by rollup (a) order by a;
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-- nesting with window functions
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select a, b, sum(c), sum(sum(c)) over (order by a,b) as rsum
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from gstest2 group by rollup (a,b) order by rsum, a, b;
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-- nesting with grouping sets
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select sum(c) from gstest2
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group by grouping sets((), grouping sets((), grouping sets(())))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets((), grouping sets((), grouping sets(((a, b)))))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets(grouping sets(rollup(c), grouping sets(cube(c))))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets(a, grouping sets(a, cube(b)))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets(grouping sets((a, (b))))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets(grouping sets((a, b)))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets(grouping sets(a, grouping sets(a), a))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets(grouping sets(a, grouping sets(a, grouping sets(a), ((a)), a, grouping sets(a), (a)), a))
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order by 1 desc;
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select sum(c) from gstest2
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group by grouping sets((a,(a,b)), grouping sets((a,(a,b)),a))
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order by 1 desc;
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-- empty input: first is 0 rows, second 1, third 3 etc.
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select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),a);
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select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),());
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select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),(),(),());
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select sum(v), count(*) from gstest_empty group by grouping sets ((),(),());
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-- empty input with joins tests some important code paths
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select t1.a, t2.b, sum(t1.v), count(*) from gstest_empty t1, gstest_empty t2
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group by grouping sets ((t1.a,t2.b),());
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-- simple joins, var resolution, GROUPING on join vars
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select t1.a, t2.b, grouping(t1.a, t2.b), sum(t1.v), max(t2.a)
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from gstest1 t1, gstest2 t2
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group by grouping sets ((t1.a, t2.b), ());
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select t1.a, t2.b, grouping(t1.a, t2.b), sum(t1.v), max(t2.a)
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from gstest1 t1 join gstest2 t2 on (t1.a=t2.a)
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group by grouping sets ((t1.a, t2.b), ());
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select a, b, grouping(a, b), sum(t1.v), max(t2.c)
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from gstest1 t1 join gstest2 t2 using (a,b)
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group by grouping sets ((a, b), ());
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-- check that functionally dependent cols are not nulled
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select a, d, grouping(a,b,c)
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from gstest3
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group by grouping sets ((a,b), (a,c));
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-- simple rescan tests
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select a, b, sum(v.x)
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from (values (1),(2)) v(x), gstest_data(v.x)
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group by rollup (a,b);
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select *
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from (values (1),(2)) v(x),
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lateral (select a, b, sum(v.x) from gstest_data(v.x) group by rollup (a,b)) s;
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-- min max optimisation should still work with GROUP BY ()
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explain (costs off)
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select min(unique1) from tenk1 GROUP BY ();
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-- Views with GROUPING SET queries
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CREATE VIEW gstest_view AS select a, b, grouping(a,b), sum(c), count(*), max(c)
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from gstest2 group by rollup ((a,b,c),(c,d));
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select pg_get_viewdef('gstest_view'::regclass, true);
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-- Nested queries with 3 or more levels of nesting
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select(select (select grouping(a,b) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP(e,f);
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select(select (select grouping(e,f) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP(e,f);
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select(select (select grouping(c) from (values (1)) v2(c) GROUP BY c) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP(e,f);
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-- Combinations of operations
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select a, b, c, d from gstest2 group by rollup(a,b),grouping sets(c,d);
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select a, b from (values (1,2),(2,3)) v(a,b) group by a,b, grouping sets(a);
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-- Tests for chained aggregates
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select a, b, grouping(a,b), sum(v), count(*), max(v)
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from gstest1 group by grouping sets ((a,b),(a+1,b+1),(a+2,b+2));
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select(select (select grouping(a,b) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP((e+1),(f+1));
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select(select (select grouping(a,b) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY CUBE((e+1),(f+1)) ORDER BY (e+1),(f+1);
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select a, b, sum(c), sum(sum(c)) over (order by a,b) as rsum
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from gstest2 group by cube (a,b) order by rsum, a, b;
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select a, b, sum(c) from (values (1,1,10),(1,1,11),(1,2,12),(1,2,13),(1,3,14),(2,3,15),(3,3,16),(3,4,17),(4,1,18),(4,1,19)) v(a,b,c) group by rollup (a,b);
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select a, b, sum(v.x)
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from (values (1),(2)) v(x), gstest_data(v.x)
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group by cube (a,b) order by a,b;
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-- Agg level check. This query should error out.
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select (select grouping(a,b) from gstest2) from gstest2 group by a,b;
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--Nested queries
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select a, b, sum(c), count(*) from gstest2 group by grouping sets (rollup(a,b),a);
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-- HAVING queries
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select ten, sum(distinct four) from onek a
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group by grouping sets((ten,four),(ten))
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having exists (select 1 from onek b where sum(distinct a.four) = b.four);
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-- Tests around pushdown of HAVING clauses, partially testing against previous bugs
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select a,count(*) from gstest2 group by rollup(a) order by a;
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select a,count(*) from gstest2 group by rollup(a) having a is distinct from 1 order by a;
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explain (costs off)
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select a,count(*) from gstest2 group by rollup(a) having a is distinct from 1 order by a;
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select v.c, (select count(*) from gstest2 group by () having v.c)
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from (values (false),(true)) v(c) order by v.c;
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explain (costs off)
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select v.c, (select count(*) from gstest2 group by () having v.c)
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from (values (false),(true)) v(c) order by v.c;
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-- HAVING with GROUPING queries
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select ten, grouping(ten) from onek
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group by grouping sets(ten) having grouping(ten) >= 0
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order by 2,1;
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select ten, grouping(ten) from onek
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group by grouping sets(ten, four) having grouping(ten) > 0
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order by 2,1;
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select ten, grouping(ten) from onek
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group by rollup(ten) having grouping(ten) > 0
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order by 2,1;
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select ten, grouping(ten) from onek
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group by cube(ten) having grouping(ten) > 0
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order by 2,1;
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select ten, grouping(ten) from onek
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group by (ten) having grouping(ten) >= 0
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order by 2,1;
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-- FILTER queries
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select ten, sum(distinct four) filter (where four::text ~ '123') from onek a
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group by rollup(ten);
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-- More rescan tests
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select * from (values (1),(2)) v(a) left join lateral (select v.a, four, ten, count(*) from onek group by cube(four,ten)) s on true order by v.a,four,ten;
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select array(select row(v.a,s1.*) from (select two,four, count(*) from onek group by cube(two,four) order by two,four) s1) from (values (1),(2)) v(a);
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-- Grouping on text columns
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select sum(ten) from onek group by two, rollup(four::text) order by 1;
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select sum(ten) from onek group by rollup(four::text), two order by 1;
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-- end
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