SELECT 1
FROM dbo.Customers
WHERE   CustID = @CustID COLLATE SQL_Latin1_General_CP1_CS_AS
    AND CustPassword = @CustPassword COLLATE SQL_Latin1_General_CP1_CS_AS

SELECT *
FROM Users
WHERE
    Username = @Username COLLATE SQL_Latin1_General_CP1_CS_AS
    AND Password = @Password COLLATE SQL_Latin1_General_CP1_CS_AS
    AND Username = @Username
    AND Password = @Password

SELECT *
FROM Users
WHERE
    CAST(Username as varbinary(100)) = CAST(@Username as varbinary))
    AND CAST(Password as varbinary(100)) = CAST(@Password as varbinary(100))
    AND Username = @Username
    AND Password = @Password

Select * from your_table where convert(varbinary, your_column) = convert(varbinary, 'aBcD')

SELECT
FROM Users
WHERE
    BINARY_CHECKSUM(Username) = BINARY_CHECKSUM(@Username)
    AND BINARY_CHECKSUM(Password) = BINARY_CHECKSUM(@Password)

declare @first_value nvarchar(1) = 'a'
declare @second_value navarchar(1) = 'A'

if HASHBYTES('SHA1',@first_value) = HASHBYTES('SHA1',@second_value) begin
    print 'equal'
end else begin
    print 'not equal'
end

-- output:
-- not equal

declare @example table (ValueA nvarchar(1), ValueB nvarchar(1))

insert into @example (ValueA, ValueB)
values  ('a', 'A'),
        ('a', 'a'),
        ('a', 'b')

select  ValueA + ' = ' + ValueB
from    @example
where   hashbytes('SHA1', ValueA) = hashbytes('SHA1', ValueB)

-- output:
-- a = a

select  ValueA + ' <> ' + ValueB
from    @example
where   hashbytes('SHA1', ValueA) <> hashbytes('SHA1', ValueB)

-- output:
-- a <> A
-- a <> b

declare @value_b nvarchar(1) = 'A'

select  ValueB + ' = ' + @value_b
from    @example
where   hashbytes('SHA1', ValueB) = hasbytes('SHA1', @value_b)

-- output:
-- A = A

SELECT * FROM table_name WHERE binary username=@search_parameter and binary password=@search_parameter