(SQL Server) JSON Add Large Integer or Double

Demonstrates how to add a large number (larger than what can be held in an integer), or a double/float value to a JSON document.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @json int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- To add a large integer, use AddNumberAt.

    -- (an index of -1 indicates append).
    DECLARE @index int
    SELECT @index = -1
    DECLARE @success int
    EXEC sp_OAMethod @json, 'AddNumberAt', @success OUT, @index, 'bignum', '8239845689346587465826345892644873453634563456'

    -- Do the same for a double..
    EXEC sp_OAMethod @json, 'AddNumberAt', @success OUT, @index, 'double', '-153634.295'

    EXEC sp_OASetProperty @json, 'EmitCompact', 0
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    -- Output:

    -- 	{
    -- 	  "bignum": 8239845689346587465826345892644873453634563456,
    -- 	  "double": -153634.295
    -- 	}

    EXEC @hr = sp_OADestroy @json


END
GO