SQL Server

Get a Substring by Char Index and Length

Demonstrates how to use the GetRange method to get a substring by index and length.

Note: This example demonstrates the GetRange method which was added in Chilkat v9.5.0.87.

SQL Server

-- 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 @success int
    SELECT @success = 0

    DECLARE @sb int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sb OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Load a file that contains this string:  0123456789ABCDEF
    EXEC sp_OAMethod @sb, 'LoadFile', @success OUT, 'qa_data/txt/remove_chars.txt', 'utf-8'

    -- Return "56789A" from the string.
    -- if removeFlag is 1, the returned string is also removed from the sb.
    DECLARE @removeFlag int
    SELECT @removeFlag = 1
    DECLARE @result nvarchar(4000)
    EXEC sp_OAMethod @sb, 'GetRange', @result OUT, 5, 6, @removeFlag


    PRINT @result
    EXEC sp_OAMethod @sb, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    -- Output is: 
    -- 
    -- 56789A
    -- 01234BCDE

    EXEC @hr = sp_OADestroy @sb


END
GO