Documentation

SQL comparison operators

Comparison operators evaluate the relationship between the left and right operands and returns true or false.

Operator Meaning
= Equal to
<> Not equal to
!= Not equal to
> Greater than
>= Greater than or equal to
< Less than
<= Less than or equal to
~ Matches a regular expression
~* Matches a regular expression (case-insensitive)
!~ Does not match a regular expression
!~* Does not match a regular expression (case-insensitive)

=

The = operator compares the left and right operands and, if equal, returns true. Otherwise returns false.

SELECT 123 = 123
Int64(123) = Int64(123)
true

!=, <>

The != and <> operators compare the left and right operands and, if not equal, returns true. Otherwise returns false.

SELECT 123 != 456
Int64(123) != Int64(456)
true
SELECT 123 <> 456
Int64(123) != Int64(456)
true

>

The > operator compares the left and right operands and, if the left operand is greater than the right operand, returns true. Otherwise returns false.

SELECT 3 > 2
Int64(3) > Int64(2)
true

>=

The >= operator compares the left and right operands and, if the left operand is greater than or equal to the right operand, returns true. Otherwise returns false.

SELECT 3 >= 2
Int64(3) >= Int64(2)
true

<

The < operator compares the left and right operands and, if the left operand is less than the right operand, returns true. Otherwise returns false.

SELECT 1 < 2
Int641(1) < Int64(2)
true

<=

The <= operator compares the left and right operands and, if the left operand is less than or equal to the right operand, returns true. Otherwise returns false.

SELECT 1 <= 2
Int641(1) <= Int64(2)
true

~

The ~ operator compares the left string operand to the right regular expression operand and, if it matches (case-sensitive), returns true. Otherwise returns false.

SELECT 'abc' ~ 'a.*'
Utf8(“abc”) ~ Utf8(“a.*”)
true

~*

The ~* operator compares the left string operand to the right regular expression operand and, if it matches (case-insensitive), returns true. Otherwise returns false.

SELECT 'Abc' ~* 'A.*'
Utf8(“Abc”) ~* Utf8(“A.*”)
true

!~

The !~ operator compares the left string operand to the right regular expression operand and, if it does not match (case-sensitive), returns true. Otherwise returns false.

SELECT 'abc' !~ 'd.*'
Utf8(“abc”) !~ Utf8(“d.*”)
true

!~*

The !~* operator compares the left string operand to the right regular expression operand and, if it does not match (case-insensitive), returns true. Otherwise returns false.

SELECT 'Abc' !~* 'a.*'
Utf8(“Abc”) !~* Utf8(“a.*”)
false

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