Comparison

equals

Compares two values for equality.

Syntax

equals(a, b)
        -- a = b
        -- a == b

Arguments

• a — First value.^* - b — Second value.^*

Returned value

Returns 1 if a is equal to b, otherwise 0 UInt8

Examples

Usage example

SELECT 1 = 1, 1 = 2;

┌─equals(1, 1)─┬─equals(1, 2)─┐
│            1 │            0 │
└──────────────┴──────────────┘

Introduced in version 1.1.

greater

Compares two values for greater-than relation.

Syntax

greater(a, b)
    -- a > b

Arguments

• a — First value.^* - b — Second value.^*

Returned value

Returns 1 if a is greater than b, otherwise 0 UInt8

Examples

Usage example

SELECT 2 > 1, 1 > 2;

┌─greater(2, 1)─┬─greater(1, 2)─┐
│             1 │             0 │
└───────────────┴───────────────┘

Introduced in version 1.1.

greaterOrEquals

Compares two values for greater-than-or-equal-to relation.

Syntax

greaterOrEquals(a, b)
    -- a >= b

Arguments

• a — First value.^* - b — Second value.^*

Returned value

Returns 1 if a is greater than or equal to b, otherwise 0 UInt8

Examples

Usage example

SELECT 2 >= 1, 2 >= 2, 1 >= 2;

┌─greaterOrEquals(2, 1)─┬─greaterOrEquals(2, 2)─┬─greaterOrEquals(1, 2)─┐
│                     1 │                     1 │                     0 │
└───────────────────────┴───────────────────────┴───────────────────────┘

Introduced in version 1.1.

isDistinctFrom

Performs a null-safe "not equals" comparison between two values. Returns true if the values are distinct (not equal), including when one value is NULL and the other is not. Returns false if the values are equal, or if both are NULL.

Syntax

isDistinctFrom(x, y)

Arguments

• x — First value to compare. Can be any RawTree data type. Any
• y — Second value to compare. Can be any RawTree data type. Any

Returned value

Returns true if the two values are different, treating NULLs as comparable:

• Returns true if x != y.
• Returns true if exactly one of x or y is NULL.
• Returns false if x = y, or both x and y are NULL. Bool

Examples

Basic usage with numbers and NULLs

SELECT
    isDistinctFrom(1, 2) AS result_1,
    isDistinctFrom(1, 1) AS result_2,
    isDistinctFrom(NULL, 1) AS result_3,
    isDistinctFrom(NULL, NULL) AS result_4

┌─result_1─┬─result_2─┬─result_3─┬─result_4─┐
│        1 │        0 │        1 │        0 │
└──────────┴──────────┴──────────┴──────────┘

Introduced in version 25.11.

isNotDistinctFrom

Performs a null-safe "equals" comparison between two values. Returns true if the values are equal, including when both are NULL. Returns false if the values are different, or if exactly one of them is NULL.

Syntax

isNotDistinctFrom(x, y)

Arguments

• x — First value to compare. Can be any RawTree data type. Any
• y — Second value to compare. Can be any RawTree data type. Any

Returned value

Returns true if the two values are equal, treating NULLs as comparable:

• Returns true if x = y.
• Returns true if both x and y are NULL.
• Returns false if x != y, or exactly one of x or y is NULL. Bool

Examples

Basic usage with numbers and NULLs

SELECT
    isNotDistinctFrom(1, 1) AS result_1,
    isNotDistinctFrom(1, 2) AS result_2,
    isNotDistinctFrom(NULL, NULL) AS result_3,
    isNotDistinctFrom(NULL, 1) AS result_4

┌─result_1─┬─result_2─┬─result_3─┬─result_4─┐
│        1 │        0 │        1 │        0 │
└──────────┴──────────┴──────────┴──────────┘

Introduced in version 25.10.

less

Compares two values for less-than relation.

Syntax

less(a, b)
    -- a < b

Arguments

• a — First value.^* - b — Second value.^*

Returned value

Returns 1 if a is less than b, otherwise 0 UInt8

Examples

Usage example

SELECT 1 < 2, 2 < 1;

┌─less(1, 2)─┬─less(2, 1)─┐
│          1 │          0 │
└────────────┴────────────┘

Introduced in version 1.1.

lessOrEquals

Compares two values for less-than-or-equal-to relation.

Syntax

lessOrEquals(a, b)
-- a <= b

Arguments

• a — First value.^* - b — Second value.^*

Returned value

Returns 1 if a is less than or equal to b, otherwise 0 UInt8

Examples

Usage example

SELECT 1 <= 2, 2 <= 2, 3 <= 2;

┌─lessOrEquals(1, 2)─┬─lessOrEquals(2, 2)─┬─lessOrEquals(3, 2)─┐
│                  1 │                  1 │                  0 │
└────────────────────┴────────────────────┴────────────────────┘

Introduced in version 1.1.

notEquals

Compares two values for inequality.

Syntax

notEquals(a, b)
    -- a != b
    -- a <> b

Arguments

• a — First value.^* - b — Second value.^*

Returned value

Returns 1 if a is not equal to b, otherwise 0. UInt8

Examples

Usage example

SELECT 1 != 2, 1 != 1;

┌─notEquals(1, 2)─┬─notEquals(1, 1)─┐
│               1 │               0 │
└─────────────────┴─────────────────┘

Introduced in version 1.1.