# name: test/optimizer/ordered_aggregate.test
# description: Test ORDER BY in AGGREGATE clause optimizations
# group: [optimizer]

statement ok
CREATE TABLE integers(grp INTEGER, i INTEGER);

statement ok
INSERT INTO integers VALUES (1, 10), (2, 15), (1, 30), (2, 20)

# duplicate expressions are removed
query I nosort order_by_agg
EXPLAIN SELECT FIRST(i ORDER BY i) FROM integers
----

query I nosort order_by_agg
EXPLAIN SELECT FIRST(i ORDER BY i, i, i) FROM integers
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query I nosort order_by_agg
EXPLAIN SELECT FIRST(i ORDER BY i, i DESC, i DESC NULLS FIRST) FROM integers
----

# groups are removed
query I nosort order_by_agg_grp
EXPLAIN SELECT grp, FIRST(i ORDER BY i) FROM integers GROUP BY grp ORDER BY grp
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query I nosort order_by_agg_grp
EXPLAIN SELECT grp, FIRST(i ORDER BY grp, i) FROM integers GROUP BY grp ORDER BY grp
----

query I nosort order_by_agg_grp
EXPLAIN SELECT grp, FIRST(i ORDER BY grp, i, grp DESC, i DESC) FROM integers GROUP BY grp ORDER BY grp
----

# now with no remaining aggregates
query I nosort order_by_none
EXPLAIN SELECT grp, FIRST(i) FROM integers GROUP BY grp ORDER BY grp
----

query I nosort order_by_none
EXPLAIN SELECT grp, FIRST(i ORDER BY grp) FROM integers GROUP BY grp ORDER BY grp
----

query I nosort order_by_none
EXPLAIN SELECT grp, FIRST(i ORDER BY grp, grp DESC, grp DESC NULLS FIRST) FROM integers GROUP BY grp ORDER BY grp
----

# ORDER BY is removed from aggregates for which it has no effect
query I nosort order_by_min
EXPLAIN SELECT MIN(i) FROM integers
----

query I nosort order_by_min
EXPLAIN SELECT MIN(i ORDER BY i) FROM integers
----

query I nosort order_by_max
EXPLAIN SELECT MAX(i) FROM integers
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query I nosort order_by_max
EXPLAIN SELECT MAX(i ORDER BY i) FROM integers
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query I nosort order_by_median
EXPLAIN SELECT MEDIAN(i) FROM integers
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query I nosort order_by_median
EXPLAIN SELECT MEDIAN(i ORDER BY i) FROM integers
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query I nosort order_by_sum
EXPLAIN SELECT SUM(i) FROM integers
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query I nosort order_by_sum
EXPLAIN SELECT SUM(i ORDER BY i) FROM integers
----