mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-25 17:12:03 +00:00
61 lines
3.4 KiB
SQL
61 lines
3.4 KiB
SQL
DROP TABLE IF EXISTS decimal;
|
|
|
|
CREATE TABLE IF NOT EXISTS decimal
|
|
(
|
|
a DEC(9, 2),
|
|
b DEC(18, 5),
|
|
c DEC(38, 5),
|
|
d Nullable(DEC(9, 4)),
|
|
e Nullable(DEC(18, 8)),
|
|
f Nullable(DEC(38, 8))
|
|
) ENGINE = Memory;
|
|
|
|
SELECT toNullable(toDecimal32(32, 0)) AS x, assumeNotNull(x);
|
|
SELECT toNullable(toDecimal64(64, 0)) AS x, assumeNotNull(x);
|
|
SELECT toNullable(toDecimal128(128, 0)) AS x, assumeNotNull(x);
|
|
|
|
SELECT ifNull(toDecimal32(1, 0), NULL), ifNull(toDecimal64(1, 0), NULL), ifNull(toDecimal128(1, 0), NULL);
|
|
SELECT ifNull(toNullable(toDecimal32(2, 0)), NULL), ifNull(toNullable(toDecimal64(2, 0)), NULL), ifNull(toNullable(toDecimal128(2, 0)), NULL);
|
|
SELECT ifNull(NULL, toDecimal32(3, 0)), ifNull(NULL, toDecimal64(3, 0)), ifNull(NULL, toDecimal128(3, 0));
|
|
SELECT ifNull(NULL, toNullable(toDecimal32(4, 0))), ifNull(NULL, toNullable(toDecimal64(4, 0))), ifNull(NULL, toNullable(toDecimal128(4, 0)));
|
|
|
|
SELECT coalesce(toDecimal32(5, 0), NULL), coalesce(toDecimal64(5, 0), NULL), coalesce(toDecimal128(5, 0), NULL);
|
|
SELECT coalesce(NULL, toDecimal32(6, 0)), coalesce(NULL, toDecimal64(6, 0)), coalesce(NULL, toDecimal128(6, 0));
|
|
|
|
SELECT coalesce(toNullable(toDecimal32(7, 0)), NULL), coalesce(toNullable(toDecimal64(7, 0)), NULL), coalesce(toNullable(toDecimal128(7, 0)), NULL);
|
|
SELECT coalesce(NULL, toNullable(toDecimal32(8, 0))), coalesce(NULL, toNullable(toDecimal64(8, 0))), coalesce(NULL, toNullable(toDecimal128(8, 0)));
|
|
|
|
SELECT nullIf(toNullable(toDecimal32(1, 0)), toDecimal32(1, 0)), nullIf(toNullable(toDecimal64(1, 0)), toDecimal64(1, 0));
|
|
SELECT nullIf(toDecimal32(1, 0), toNullable(toDecimal32(1, 0))), nullIf(toDecimal64(1, 0), toNullable(toDecimal64(1, 0)));
|
|
SELECT nullIf(toNullable(toDecimal32(1, 0)), toDecimal32(2, 0)), nullIf(toNullable(toDecimal64(1, 0)), toDecimal64(2, 0));
|
|
SELECT nullIf(toDecimal32(1, 0), toNullable(toDecimal32(2, 0))), nullIf(toDecimal64(1, 0), toNullable(toDecimal64(2, 0)));
|
|
SELECT nullIf(toNullable(toDecimal128(1, 0)), toDecimal128(1, 0));
|
|
SELECT nullIf(toDecimal128(1, 0), toNullable(toDecimal128(1, 0)));
|
|
SELECT nullIf(toNullable(toDecimal128(1, 0)), toDecimal128(2, 0));
|
|
SELECT nullIf(toDecimal128(1, 0), toNullable(toDecimal128(2, 0)));
|
|
|
|
INSERT INTO decimal (a, b, c, d, e, f) VALUES (1.1, 1.1, 1.1, 1.1, 1.1, 1.1);
|
|
INSERT INTO decimal (a, b, c, d) VALUES (2.2, 2.2, 2.2, 2.2);
|
|
INSERT INTO decimal (a, b, c, e) VALUES (3.3, 3.3, 3.3, 3.3);
|
|
INSERT INTO decimal (a, b, c, f) VALUES (4.4, 4.4, 4.4, 4.4);
|
|
INSERT INTO decimal (a, b, c) VALUES (5.5, 5.5, 5.5);
|
|
|
|
SELECT * FROM decimal ORDER BY d, e, f;
|
|
SELECT isNull(a), isNotNull(a) FROM decimal WHERE a = toDecimal32(5.5, 1);
|
|
SELECT isNull(b), isNotNull(b) FROM decimal WHERE a = toDecimal32(5.5, 1);
|
|
SELECT isNull(c), isNotNull(c) FROM decimal WHERE a = toDecimal32(5.5, 1);
|
|
SELECT isNull(d), isNotNull(d) FROM decimal WHERE a = toDecimal32(5.5, 1);
|
|
SELECT isNull(e), isNotNull(e) FROM decimal WHERE a = toDecimal32(5.5, 1);
|
|
SELECT isNull(f), isNotNull(f) FROM decimal WHERE a = toDecimal32(5.5, 1);
|
|
SELECT count() FROM decimal WHERE a IS NOT NULL;
|
|
SELECT count() FROM decimal WHERE b IS NOT NULL;
|
|
SELECT count() FROM decimal WHERE c IS NOT NULL;
|
|
SELECT count() FROM decimal WHERE d IS NULL;
|
|
SELECT count() FROM decimal WHERE e IS NULL;
|
|
SELECT count() FROM decimal WHERE f IS NULL;
|
|
SELECT count() FROM decimal WHERE d IS NULL AND e IS NULL;
|
|
SELECT count() FROM decimal WHERE d IS NULL AND f IS NULL;
|
|
SELECT count() FROM decimal WHERE e IS NULL AND f IS NULL;
|
|
|
|
DROP TABLE IF EXISTS decimal;
|