How to get text between two words/characters

Question

How can I get some text between two known words?

Sub-select example:

(SELECT TOP(1)Note
FROM Clients
WHERE (ID=@ID) AND (Note IS NOT NULL) AND (Note NOT         


        

Answer 1

CREATE FUNCTION [dbo].[fnSplitString] 
( 
    @string NVARCHAR(MAX),
    @id int , ,
    @sword varchar(30) ,
    @delimiter varchar(30) 
) 
RETURNS @output TABLE(splitdata NVARCHAR(MAX) , id int
) 
BEGIN 
    DECLARE @start INT, @end INT 
    declare @start1 varchar(100)
    set @start1 = @sword

    declare @end1 varchar(100)
    set @end1 =  @delimiter
    SELECT @start = 1, @end = CHARINDEX(@delimiter, @string) + Len(@delimiter) - 1
    WHILE @start < LEN(@string) + 1 BEGIN 
        IF @end = 0  
            SET @end = LEN(@string) + 1

        INSERT INTO @output (splitdata , id)  
        VALUES(substring( LEFT((SUBSTRING(@string, @start, @end - @start)), charindex(@end1, (SUBSTRING(@string, @start, @end - @start)), CHARINDEX(@start1, (SUBSTRING(@string, @start, @end - @start))))-1), CHARINDEX(@start1, (SUBSTRING(@string, @start, @end - @start))) + len(@start1), LEN((SUBSTRING(@string, @start, @end - @start))))  ,@id ) 

        SET @start = @end + 1 
        SET @end = CHARINDEX(@delimiter, @string, @start)+ Len(@delimiter) - 1
         END 
    RETURN 
END

Select note , fnSplitString (note , id ,'startword', 'endword') from clients