Я написал хранимую процедуру, чтобы показать, как это сделать раньше.
Вы в основном должны обработать строку.
Я попытался опубликовать код здесь, но форматирование стало все в порядке.
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id(N'[dbo].[uspSplitTextList]') AND OBJECTPROPERTY(id, N'IsProcedure') = 1)
DROP PROCEDURE [dbo].[uspSplitTextList]
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-- uspSplitTextList
--
-- Description:
-- splits a separated list of text items and returns the text items
--
-- Arguments:
-- @list_text - list of text items
-- @Delimiter - delimiter
--
-- Notes:
-- 02/22/2006 - WSR : use DATALENGTH instead of LEN throughout because LEN doesn't count trailing blanks
--
-- History:
-- 02/22/2006 - WSR : revised algorithm to account for items crossing 8000 character boundary
-- 09/18/2006 - WSR : added to this project
--
CREATE PROCEDURE uspSplitTextList
@list_text text,
@Delimiter varchar(3)
AS
SET NOCOUNT ON
DECLARE @InputLen integer -- input text length
DECLARE @TextPos integer -- current position within input text
DECLARE @Chunk varchar(8000) -- chunk within input text
DECLARE @ChunkPos integer -- current position within chunk
DECLARE @DelimPos integer -- position of delimiter
DECLARE @ChunkLen integer -- chunk length
DECLARE @DelimLen integer -- delimiter length
DECLARE @ItemBegPos integer -- item starting position in text
DECLARE @ItemOrder integer -- item order in list
DECLARE @DelimChar varchar(1) -- first character of delimiter (simple delimiter)
-- create table to hold list items
-- actually their positions because we may want to scrub this list eliminating bad entries before substring is applied
CREATE TABLE #list_items ( item_order integer, item_begpos integer, item_endpos integer )
-- process list
IF @list_text IS NOT NULL
BEGIN
-- initialize
SET @InputLen = DATALENGTH(@list_text)
SET @TextPos = 1
SET @DelimChar = SUBSTRING(@Delimiter, 1, 1)
SET @DelimLen = DATALENGTH(@Delimiter)
SET @ItemBegPos = 1
SET @ItemOrder = 1
SET @ChunkLen = 1
-- cycle through input processing chunks
WHILE @TextPos <= @InputLen AND @ChunkLen <> 0
BEGIN
-- get current chunk
SET @Chunk = SUBSTRING(@list_text, @TextPos, 8000)
-- setup initial variable values
SET @ChunkPos = 1
SET @ChunkLen = DATALENGTH(@Chunk)
SET @DelimPos = CHARINDEX(@DelimChar, @Chunk, @ChunkPos)
-- loop over the chunk, until the last delimiter
WHILE @ChunkPos <= @ChunkLen AND @DelimPos <> 0
BEGIN
-- see if this is a full delimiter
IF SUBSTRING(@list_text, (@TextPos + @DelimPos - 1), @DelimLen) = @Delimiter
BEGIN
-- insert position
INSERT INTO #list_items (item_order, item_begpos, item_endpos)
VALUES (@ItemOrder, @ItemBegPos, (@TextPos + @DelimPos - 1) - 1)
-- adjust positions
SET @ItemOrder = @ItemOrder + 1
SET @ItemBegPos = (@TextPos + @DelimPos - 1) + @DelimLen
SET @ChunkPos = @DelimPos + @DelimLen
END
ELSE
BEGIN
-- adjust positions
SET @ChunkPos = @DelimPos + 1
END
-- find next delimiter
SET @DelimPos = CHARINDEX(@DelimChar, @Chunk, @ChunkPos)
END
-- adjust positions
SET @TextPos = @TextPos + @ChunkLen
END
-- handle last item
IF @ItemBegPos <= @InputLen
BEGIN
-- insert position
INSERT INTO #list_items (item_order, item_begpos, item_endpos)
VALUES (@ItemOrder, @ItemBegPos, @InputLen)
END
-- delete the bad items
DELETE FROM #list_items
WHERE item_endpos < item_begpos
-- return list items
SELECT SUBSTRING(@list_text, item_begpos, (item_endpos - item_begpos + 1)) AS item_text, item_order, item_begpos, item_endpos
FROM #list_items
ORDER BY item_order
END
DROP TABLE #list_items
RETURN
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO