String Between Two delimiters ('_')

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I am working on splitting a string into its basic components. I have figured out the first part and is working fine;

SELECT(SUBSTRING(Field,0,CHARINDEX('_',Field,0))) AS POS1

What I am currently having a problem with is the 2nd and 3rd parts. The format of the whole string is; character_character_character (where each of these fields can have a varied amount of characters).

SUBSTRING(Field, CHARINDEX('-',Field)+1, CHARINDEX('_',Field, CHARINDEX('_',Field)+1 - CHARINDEX('_',Field)-1)) AS POS2

This is working in some instances but truncating in others. I've been staring at this for so long that I am solution blind.

Also, going to tackle the third position.

Any advice would be welcomed as to why this does work the way it should.


This should work:

SELECT Field, SUBSTRING(Field,0,CHARINDEX('_',Field,0)) AS POS1, 
SUBSTRING(SUBSTRING(Field, CHARINDEX('_',Field)+1, LEN(Field)), 0, CHARINDEX('_',SUBSTRING(Field, CHARINDEX('_',Field)+1, LEN(Field)),0)) AS POS2 ,
SUBSTRING(Field, 3 + LEN(SUBSTRING(Field,0,CHARINDEX('_',Field,0))) + LEN(SUBSTRING(SUBSTRING(Field, CHARINDEX('_',Field)+1, LEN(Field)), 0, CHARINDEX('_',SUBSTRING(Field, CHARINDEX('_',Field)+1, LEN(Field)),0))), LEN(Field))  AS POS3
FROM YOUR_TABLE

Solved: Capture text string between two delimiters, Solved: Hi, I have a variable with values all structured like this: MHS7. VITAMIN D DEFICIENCY (ONSET DATE = UN UNK 2016) I need to  Text.BetweenDelimiters. 8/2/2019; 2 minutes to read; In this article Syntax Text.BetweenDelimiters(text as nullable text, startDelimiter as text, endDelimiter as text, optional startIndex as any, optional endIndex as any) as any About. Returns the portion of text between the specified startDelimiter and endDelimiter.


If it's always three parts you can use a trick with replace and parsename:

SELECT PARSENAME(val, 3) As col1,
       PARSENAME(val, 2) As col2,
       PARSENAME(val, 1) As col3
FROM Table
CROSS APPLY
(
    SELECT REPLACE(Col, '_', '.') As val
) x

Java Class To Find Substrings Between Two Delimiters, Where , Sometimes, it is necessary to find substrings of a string between two delimiters. * This is usually easy, unless the delimiters can be nested. public string Between(string STR , string FirstString, string LastString) { string FinalString; int Pos1 = STR.IndexOf(FirstString) + FirstString.Length; int Pos2 = STR.IndexOf(LastString); FinalString = STR.Substring(Pos1, Pos2 - Pos1); return FinalString; }


I've used REVERSE before to do something similar with the path and file names.There are some examples Here too.

DECLARE @full VARCHAR(MAX)
SET @full = 'c:\windows\system\sub-folder\somefile_file-stuff.qqq'
SELECT SUBSTRING(@full, 1, LEN(@full)-(CHARINDEX('\',REVERSE(@full))-1)) AS Path

Extract substrings between start and end points, I now how a String with full text from the pdf. I need to extract the text in the string that lies between the words “SECOND PARTY THE BUYERS NameEnglish”  I need a SQL query to get the value between two known strings (the returned value should start and end with these two strings). An example. "All I knew was that the dog had been very bad and required harsh punishment immediately regardless of what anyone else thought." In this case the known strings are "the dog" and "immediately".


Try this, I tend to use variables to get the positions and simply the process

declare @field varchar(300) =  'character1_character2_character3'
declare @char1Pos int =  CHARINDEX('_',@field,0)

--select @char1Pos
declare @char2Pos int = (CHARINDEX('_',@field)+@char1Pos + 1) -1
--select @char2Pos

select  (SUBSTRING(@field,0,@char1Pos)) AS POS1,
SUBSTRING(@field, -- field
          @char1Pos+ 1,--starting position for POS2
          (@char2Pos -1) - @char1Pos) --ENDING POSITION FOR POS2
          AS POS2,
     substring(@field,-- field
                ((@char2Pos +1) ),--starting position for POS3
                len(@field) - ((@char2Pos -1) - @char1Pos))--ENDING POSITION FOR POS2
                 as POS3

Extracting text between two Str Delimiters - Build, I would like the “middle part” of a string like below blahblahblah 123456​Ablahblah How would I get 123456 (string in between the last space  These solutions assume the start string and final string are different. Here is a solution I use for an entire file when the initial and final indicators are the same, assuming the entire file is read using readlines():


Final working code;

SELECT (SUBSTRING([field],0,CHARINDEX('_',[field],0))) AS POS1
, SUBSTRING(SUBSTRING([field], CHARINDEX('_',[field])+1, LEN([field])), 0, CHARINDEX('_',SUBSTRING([field], CHARINDEX('_',[field])+1, LEN([field])),0)) AS POS2
, RIGHT([field],CHARINDEX('_',REVERSE([field]))-1) AS POS3
FROM TableName

Thanks all, especially Sorix.

How to split string between two delimiters - Build, This article shows the C plus plus (C++) code to extract/replace a sub-string between two delimiters or characters using find and substr  Note: A3 is the text cell, / is the character you want to extract between. Extract part string between two characters with Kutools for Excel. If you have Kutools for Excel, you also can extract part string between two texts.


C plus plus code to Extract/Replace String between two delimiters , @Flag int=0) RETURNS varchar(8000) AS /* Extracts part of a string between two delimiters Parameters: @StrIn - source character expression @StartDelim,  Text to Columns feature is very useful to split a list to multiple columns in Excel. This method is talking about how to split data by specified delimiter with Text to Column feature in Excel. Please do as follows: 1. Select the column list you want to split by delimiter, and click Data > Text to Columns. See screenshot: 2.


Strextract UDF, Almost there, thanks to this list and http://fahdshariff.blogspot.com/2012/12/sed-​mutli-line-replacement-between-two.html. I am able on the command line to  Consecutive delimiters are treated as if an empty string element were present between them. 3. Except when spaces are used as a delimiter, all spaces present in each element are preserved.


Find and replace string between two delimiters, The practical ways of using the useful substring functionality in Java - from A Scanner breaks its input into tokens using a delimiter pattern, which we're going to see how to extract a substring nested between two Strings: ? If you want to extract the values between the 2nd and 3rd colon delimiter, you add a column with this formula: Text.Split([Value], ":"){2} It splits the text on each colon and returns a list of the separated values. To fetch the 3rd value from the list you use {2} because the count starts at zero here.