should be it

external/duckdb/test/sql/overflow/test_numeric_overflow.test

@@ -0,0 +1,87 @@
+# name: test/sql/overflow/test_numeric_overflow.test
+# description: Test handling of overflows in float/double
+# group: [overflow]
+
+statement ok
+PRAGMA enable_verification
+
+query I
+SELECT 1e1000
+----
+inf
+
+# overflow on cast from double to real results in an error
+statement error
+SELECT 1e308::REAL
+----
+Conversion Error
+
+# except we can cast inf -> inf
+query I
+SELECT 1e1000::REAL
+----
+inf
+
+# test string casts
+query I
+SELECT '1e1000'::DOUBLE
+----
+inf
+
+query I
+SELECT '1e100'::REAL
+----
+inf
+
+# overflow in SUM/AVG overflow
+query I
+SELECT SUM(i) FROM (VALUES (1e308), (1e308)) tbl(i)
+----
+inf
+
+query I
+SELECT AVG(i) FROM (VALUES (1e308), (1e308)) tbl(i)
+----
+inf
+
+# overflow in arithmetic as well
+query I
+SELECT 1e308+1e308
+----
+inf
+
+query I
+SELECT 1e308*2
+----
+inf
+
+query I
+SELECT -1e308-1e308
+----
+-inf
+
+query I
+SELECT 1e308/0.1
+----
+inf
+
+query I
+SELECT 2e38::REAL+2e38::REAL
+----
+inf
+
+query I
+SELECT 2e38::REAL*2
+----
+inf
+
+query I
+SELECT -2e38::REAL-2e38::REAL
+----
+-inf
+
+query I
+SELECT 2e38::REAL/0.1::REAL
+----
+inf
+