IF OBJECT_ID('[dbo].[fnGetKapcsolodoTantargyak]') IS NOT NULL BEGIN
  DROP FUNCTION [dbo].[fnGetKapcsolodoTantargyak]
END
GO

CREATE FUNCTION [dbo].[fnGetKapcsolodoTantargyak] (@pTantargyId INT) 
RETURNS @return TABLE (
	ID					INT,
	C_FOTARGYID			INT, 
	C_NEV				NVARCHAR(255), 
	C_TARGYKATEGORIA 	INT
)
BEGIN   
	IF @pTantargyId IS NULL
	BEGIN   
		INSERT INTO @return 
		SELECT ID, C_FOTARGYID, C_NEV, C_TARGYKATEGORIA FROM T_TANTARGY WHERE TOROLT = 'F'
	END
	ELSE   
	BEGIN   
		INSERT INTO @return 
		SELECT ID, C_FOTARGYID, C_NEV, C_TARGYKATEGORIA FROM T_TANTARGY WHERE ID = @pTantargyId AND TOROLT = 'F'
		UNION
		SELECT ID, C_FOTARGYID, C_NEV, C_TARGYKATEGORIA FROM T_TANTARGY WHERE C_FOTARGYID = @pTantargyId AND TOROLT = 'F'
		UNION
		SELECT ID, C_FOTARGYID, C_NEV, C_TARGYKATEGORIA FROM T_TANTARGY WHERE C_FOTARGYID = (SELECT C_FOTARGYID FROM T_TANTARGY WHERE ID = @pTantargyId  AND TOROLT = 'F') AND TOROLT = 'F'
		UNION
		SELECT ID, C_FOTARGYID, C_NEV, C_TARGYKATEGORIA FROM T_TANTARGY WHERE ID = (SELECT C_FOTARGYID FROM T_TANTARGY WHERE ID = @pTantargyId  AND TOROLT = 'F')  AND TOROLT = 'F'
		ORDER BY C_FOTARGYID ASC, C_NEV ASC
	END
	RETURN  
END


GO