should be it

external/duckdb/test/optimizer/statistics/statistics_aggregate.test

@@ -0,0 +1,152 @@
+# name: test/optimizer/statistics/statistics_aggregate.test
+# description: Statistics propagation test with aggregates expression
+# group: [statistics]
+
+statement ok
+SET default_null_order='nulls_first';
+
+statement ok
+CREATE TABLE integers AS SELECT * FROM (VALUES (1), (2), (3)) tbl(i);
+
+statement ok
+PRAGMA explain_output = OPTIMIZED_ONLY;
+
+# statistics propagation in groups
+# no null values
+query II
+EXPLAIN SELECT i IS NULL FROM (SELECT i FROM integers GROUP BY i) integers(i);
+----
+logical_opt	<!REGEX>:.*IS_NULL.*
+
+# i=4 is out of range [1,3]
+query II
+EXPLAIN SELECT i=4 FROM (SELECT i FROM integers GROUP BY i) integers(i);
+----
+logical_opt	<!REGEX>:.*\(i = 4\).*
+
+# i=3 is in range [1,3]
+query II
+EXPLAIN SELECT i=3 FROM (SELECT i FROM integers GROUP BY i) integers(i);
+----
+logical_opt	<REGEX>:.*\(i = 3\).*
+
+# count without null values
+query I
+SELECT COUNT(i) FROM integers;
+----
+3
+
+query II
+SELECT i, COUNT(i) FROM integers GROUP BY i ORDER BY i;
+----
+1	1
+2	1
+3	1
+
+statement ok
+INSERT INTO integers VALUES (NULL);
+
+# count with null values
+query I
+SELECT COUNT(i) FROM integers;
+----
+3
+
+query II
+SELECT i, COUNT(i) FROM integers GROUP BY i ORDER BY i;
+----
+NULL	0
+1	1
+2	1
+3	1
+
+# sum
+# sum that fits in int64
+statement ok
+CREATE TABLE bigints AS SELECT i::BIGINT as i FROM (VALUES (1), (2), (3)) tbl(i);
+
+query I
+SELECT SUM(i) FROM bigints;
+----
+6
+
+# avg
+query I
+SELECT AVG(i) FROM bigints;
+----
+2
+
+# sum no longer fits in int64
+statement ok
+INSERT INTO bigints VALUES (9223372036854775806);
+
+query I
+SELECT SUM(i) FROM bigints;
+----
+9223372036854775812
+
+query I
+SELECT AVG(i) FROM bigints;
+----
+2305843009213693952
+
+statement ok
+DROP TABLE bigints;
+
+statement ok
+CREATE TABLE bigints AS SELECT i::BIGINT as i FROM (VALUES (-1), (-2), (-3)) tbl(i);
+
+query I
+SELECT SUM(i) FROM bigints;
+----
+-6
+
+# avg
+query I
+SELECT AVG(i) FROM bigints;
+----
+-2
+
+# sum no longer fits in int64 [negative]
+statement ok
+INSERT INTO bigints VALUES (-9223372036854775806);
+
+query I
+SELECT SUM(i) FROM bigints;
+----
+-9223372036854775812
+
+query I
+SELECT AVG(i) FROM bigints;
+----
+-2305843009213693952
+
+# now with decimals
+# sum that fits in int64
+statement ok
+CREATE TABLE decimals AS SELECT i::DECIMAL(18,1) as i FROM (VALUES (1), (2), (3)) tbl(i);
+
+query I
+SELECT SUM(i) FROM decimals;
+----
+6.0
+
+# avg
+query I
+SELECT AVG(i) FROM decimals;
+----
+2.0
+
+# sum no longer fits in int64
+statement ok
+INSERT INTO decimals SELECT 99999999999999999.9 FROM repeat(1, 10)
+
+query I
+SELECT SUM(i) FROM decimals;
+----
+1000000000000000005.0
+
+query I
+SELECT AVG(i) FROM decimals;
+----
+76923076923076923