SET allow_experimental_decimal_type = 1;
CREATE DATABASE IF NOT EXISTS test;
DROP TABLE IF EXISTS test.decimal;

CREATE TABLE IF NOT EXISTS test.decimal
(
    d1 DECIMAL(9, 8),
    d2 DECIMAL(18, 8),
    d3 DECIMAL(38, 8)
)
ENGINE = MergeTree
PARTITION BY toInt32(d1)
ORDER BY (d2, d3);

INSERT INTO test.decimal (d1, d2, d3) VALUES (4.2, 4.2, 4.2);

SELECT count() FROM test.decimal WHERE d1 =  toDecimal32('4.2', 1);
SELECT count() FROM test.decimal WHERE d1 != toDecimal32('4.2', 2);
SELECT count() FROM test.decimal WHERE d1 <  toDecimal32('4.2', 3);
SELECT count() FROM test.decimal WHERE d1 >  toDecimal32('4.2', 4);
SELECT count() FROM test.decimal WHERE d1 <= toDecimal32('4.2', 5);
SELECT count() FROM test.decimal WHERE d1 >= toDecimal32('4.2', 6);

INSERT INTO test.decimal (d1, d2, d3)
    SELECT toDecimal32(number % 10, 8), toDecimal64(number, 8), toDecimal128(number, 8) FROM system.numbers LIMIT 50;

SELECT count() FROM test.decimal WHERE d1 = 1;
SELECT * FROM test.decimal WHERE d1 > 5 AND d2 < 30 ORDER BY d2 DESC;
SELECT * FROM test.decimal WHERE d1 IN(1, 3) ORDER BY d2;

DROP TABLE test.decimal;