USE [site_fuchs]
GO
/****** Object:  UserDefinedFunction [dbo].[ott_jcsv_contains]    Script Date: 02.12.2020 21:05:05 ******/
DROP FUNCTION [dbo].[ott_jcsv_contains]
GO
/****** Object:  UserDefinedFunction [dbo].[ott_jcsv_contains]    Script Date: 02.12.2020 21:05:06 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

-- =============================================
-- Author:		<Author,,Name>
-- Create date: <Create Date, ,>
-- Description:	<Description, ,>
-- =============================================
CREATE FUNCTION [dbo].[ott_jcsv_contains]
(
	@groupcode varchar(10)
	,@text varchar(4000)
	,@fragment varchar(500)
)
RETURNS bit
AS
BEGIN
	DECLARE @RET bit;
	DECLARE @textinput varchar(4000) = REPLACE(ISNULL(@text, ''), ' ', '');

	IF (@textinput = '' OR @textinput = '{}' OR @fragment = '')
		BEGIN
			SET @RET = 0;
		END
	ELSE
		BEGIN

			-- Will be true 
			-- if any of the fragments exist in the list of text-items
	
			DECLARE @Pattern varchar(20) = '%"' + @groupcode + '":"%';
			DECLARE @P0 int = PATINDEX(@pattern, @textinput);
			DECLARE @P1 int = @P0 + LEN(@pattern) -2;
			DECLARE @P2 int = CHARINDEX('"',@textinput,@p1);

			IF @P0 = 0 
				BEGIN
					SET @RET = 0;

				END
			ELSE
				BEGIN
					DECLARE @text2 varchar(4000) = SUBSTRING(@textinput, @P1, @P2 - @P1);

					WITH texts as (SELECT * FROM string_split(ISNULL(@text2,''), ','))
						,fragments as (SELECT * FROM string_split(ISNULL(@fragment,''), ','))
					SELECT @RET = CASE WHEN EXISTS (SELECT * FROM texts JOIN fragments ON texts.[value] = fragments.[value]) THEN 1 ELSE 0 END;
				END

		END

	RETURN @RET;

END
GO
ALTER AUTHORIZATION ON [dbo].[ott_jcsv_contains] TO  SCHEMA OWNER 
GO