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diff --git a/src/test/regress/sql/numerology.sql b/src/test/regress/sql/numerology.sql
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+--
+-- NUMEROLOGY
+-- Test various combinations of numeric types and functions.
+--
+
+
+--
+-- numeric literals
+--
+
+SELECT 0b100101;
+SELECT 0o273;
+SELECT 0x42F;
+
+-- cases near int4 overflow
+SELECT 0b1111111111111111111111111111111;
+SELECT 0b10000000000000000000000000000000;
+SELECT 0o17777777777;
+SELECT 0o20000000000;
+SELECT 0x7FFFFFFF;
+SELECT 0x80000000;
+
+SELECT -0b10000000000000000000000000000000;
+SELECT -0b10000000000000000000000000000001;
+SELECT -0o20000000000;
+SELECT -0o20000000001;
+SELECT -0x80000000;
+SELECT -0x80000001;
+
+-- cases near int8 overflow
+SELECT 0b111111111111111111111111111111111111111111111111111111111111111;
+SELECT 0b1000000000000000000000000000000000000000000000000000000000000000;
+SELECT 0o777777777777777777777;
+SELECT 0o1000000000000000000000;
+SELECT 0x7FFFFFFFFFFFFFFF;
+SELECT 0x8000000000000000;
+
+SELECT -0b1000000000000000000000000000000000000000000000000000000000000000;
+SELECT -0b1000000000000000000000000000000000000000000000000000000000000001;
+SELECT -0o1000000000000000000000;
+SELECT -0o1000000000000000000001;
+SELECT -0x8000000000000000;
+SELECT -0x8000000000000001;
+
+-- error cases
+SELECT 123abc;
+SELECT 0x0o;
+SELECT 0.a;
+SELECT 0.0a;
+SELECT .0a;
+SELECT 0.0e1a;
+SELECT 0.0e;
+SELECT 0.0e+a;
+PREPARE p1 AS SELECT $1a;
+
+SELECT 0b;
+SELECT 1b;
+SELECT 0b0x;
+
+SELECT 0o;
+SELECT 1o;
+SELECT 0o0x;
+
+SELECT 0x;
+SELECT 1x;
+SELECT 0x0y;
+
+-- underscores
+SELECT 1_000_000;
+SELECT 1_2_3;
+SELECT 0x1EEE_FFFF;
+SELECT 0o2_73;
+SELECT 0b_10_0101;
+
+SELECT 1_000.000_005;
+SELECT 1_000.;
+SELECT .000_005;
+SELECT 1_000.5e0_1;
+
+-- error cases
+SELECT _100;
+SELECT 100_;
+SELECT 100__000;
+
+SELECT _1_000.5;
+SELECT 1_000_.5;
+SELECT 1_000._5;
+SELECT 1_000.5_;
+SELECT 1_000.5e_1;
+
+
+--
+-- Test implicit type conversions
+-- This fails for Postgres v6.1 (and earlier?)
+--  so let's try explicit conversions for now - tgl 97/05/07
+--
+
+CREATE TABLE TEMP_FLOAT (f1 FLOAT8);
+
+INSERT INTO TEMP_FLOAT (f1)
+  SELECT float8(f1) FROM INT4_TBL;
+
+INSERT INTO TEMP_FLOAT (f1)
+  SELECT float8(f1) FROM INT2_TBL;
+
+SELECT f1 FROM TEMP_FLOAT
+  ORDER BY f1;
+
+-- int4
+
+CREATE TABLE TEMP_INT4 (f1 INT4);
+
+INSERT INTO TEMP_INT4 (f1)
+  SELECT int4(f1) FROM FLOAT8_TBL
+  WHERE (f1 > -2147483647) AND (f1 < 2147483647);
+
+INSERT INTO TEMP_INT4 (f1)
+  SELECT int4(f1) FROM INT2_TBL;
+
+SELECT f1 FROM TEMP_INT4
+  ORDER BY f1;
+
+-- int2
+
+CREATE TABLE TEMP_INT2 (f1 INT2);
+
+INSERT INTO TEMP_INT2 (f1)
+  SELECT int2(f1) FROM FLOAT8_TBL
+  WHERE (f1 >= -32767) AND (f1 <= 32767);
+
+INSERT INTO TEMP_INT2 (f1)
+  SELECT int2(f1) FROM INT4_TBL
+  WHERE (f1 >= -32767) AND (f1 <= 32767);
+
+SELECT f1 FROM TEMP_INT2
+  ORDER BY f1;
+
+--
+-- Group-by combinations
+--
+
+CREATE TABLE TEMP_GROUP (f1 INT4, f2 INT4, f3 FLOAT8);
+
+INSERT INTO TEMP_GROUP
+  SELECT 1, (- i.f1), (- f.f1)
+  FROM INT4_TBL i, FLOAT8_TBL f;
+
+INSERT INTO TEMP_GROUP
+  SELECT 2, i.f1, f.f1
+  FROM INT4_TBL i, FLOAT8_TBL f;
+
+SELECT DISTINCT f1 AS two FROM TEMP_GROUP ORDER BY 1;
+
+SELECT f1 AS two, max(f3) AS max_float, min(f3) as min_float
+  FROM TEMP_GROUP
+  GROUP BY f1
+  ORDER BY two, max_float, min_float;
+
+-- GROUP BY a result column name is not legal per SQL92, but we accept it
+-- anyway (if the name is not the name of any column exposed by FROM).
+SELECT f1 AS two, max(f3) AS max_float, min(f3) AS min_float
+  FROM TEMP_GROUP
+  GROUP BY two
+  ORDER BY two, max_float, min_float;
+
+SELECT f1 AS two, (max(f3) + 1) AS max_plus_1, (min(f3) - 1) AS min_minus_1
+  FROM TEMP_GROUP
+  GROUP BY f1
+  ORDER BY two, min_minus_1;
+
+SELECT f1 AS two,
+       max(f2) + min(f2) AS max_plus_min,
+       min(f3) - 1 AS min_minus_1
+  FROM TEMP_GROUP
+  GROUP BY f1
+  ORDER BY two, min_minus_1;
+
+DROP TABLE TEMP_INT2;
+
+DROP TABLE TEMP_INT4;
+
+DROP TABLE TEMP_FLOAT;
+
+DROP TABLE TEMP_GROUP;