Solved

SQL Syntax to pull part of String Field back..? (CharIndex..?)

Posted on 2013-05-23
6
525 Views
Last Modified: 2013-05-29
My data field looks like this:


"Adventist Health System - Winter Park, FL"

This is a single String/Text Field and is consistent with the " - " and the ", " between the HospitalName and CityName, and the CityName and StateCode. All entries in this field follow this same format:  HospitalName " - " CityName ", " StateCode

I have a requirement to pull ONLY the CITYNAME from the above string field.

So that would be I need to pull the TEXT between the " - " and the ", " 

I need the function and syntax to use....THANKS
0
Comment
Question by:MIKE
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 23

Expert Comment

by:nemws1
ID: 39191897
You want PATINDEX and SUBSTRING.  I broke this down into more steps than necessary, just so you can understand it better.

DECLARE @str VARCHAR(100) = 'Adventist Health System - Winter Park, FL';
DECLARE @city VARCHAR(100);

DECLARE @sep1loc INT = PATINDEX('% - %', @str) + 3;
DECLARE @sep2loc INT = PATINDEX('%, %', @str);
DECLARE @citystrlen INT = @sep2loc - @sep1loc;
SELECT @sep1loc, @sep2loc, DATALENGTH(@str), @citystrlen
SELECT SUBSTRING(@str, @sep1loc, @citystrlen);

Open in new window

0
 
LVL 16

Expert Comment

by:Surendra Nath
ID: 39191899
the below one should help
declare @t varchar(200) 
set @t = 'Adventist Health System - Winter Park, FL'
select substring(@t,charindex('-',@t)+1,charindex(',',@t)-charindex('-',@t)-1)

Open in new window

0
 
LVL 23

Expert Comment

by:nemws1
ID: 39191913
Did you want this in a function?  Easy enough.

USE tempdb
GO

CREATE FUNCTION dbo.city_from_hospital_name
(@instr VARCHAR(1000))
RETURNS VARCHAR(1000)
AS
BEGIN
	DECLARE @sep1loc INT = PATINDEX('% - %', @instr) + 3;
	DECLARE @sep2loc INT = PATINDEX('%, %', @instr);
	DECLARE @citystrlen INT = @sep2loc - @sep1loc;
	-- SELECT @sep1loc, @sep2loc, DATALENGTH(@str), @citystrlen
	RETURN SUBSTRING(@instr, @sep1loc, @citystrlen);
END
GO

DECLARE @str VARCHAR(100) = 'Adventist Health System - Winter Park, FL';
SELECT dbo.city_from_hospital_name(@str);

Open in new window

0
MS Dynamics Made Instantly Simpler

Make Your Microsoft Dynamics Investment Count  & Drastically Decrease Training Time by Providing Intuitive Step-By-Step WalkThru Tutorials.

 
LVL 1

Expert Comment

by:dbote
ID: 39191998
If you don't want to you variables or functions here is a straight SQL example depending on the data you may have to play with the string manipulation.  

select 'Adventist Health System - Winter Park, FL' [Hospital],
      charindex('-','Adventist Health System - Winter Park, FL') [DashStartPosition],
      charindex(', ','Adventist Health System - Winter Park, FL') [StateStartPosition],
      ltrim(substring('Adventist Health System - Winter Park, FL',charindex('-','Adventist Health System - Winter Park, FL') +1,(charindex(', ','Adventist Health System - Winter Park, FL')-1) - (charindex('-','Adventist Health System - Winter Park, FL')))) [CityName]
0
 
LVL 32

Expert Comment

by:awking00
ID: 39192060
select substring(datafield,charindex('-',datafield) + 2,charindex(',',datafield) - charindex('-',datafield) - 2)
from yourtable;
0
 
LVL 69

Accepted Solution

by:
Scott Pletcher earned 500 total points
ID: 39192833
A CROSS APPLY makes the code so much easier to read, follow and maintain; and often prevents having to repeat CHARINDEXes and other functions:


SELECT
    LEFT(city_and_state, CHARINDEX(',', city_and_state) - 1) AS city
FROM (
    SELECT 'Adventist Health System - Winter Park, FL' AS string UNION ALL
    SELECT 'Baptist Hospital - Pensacola, FL'
) AS test_data
CROSS APPLY (
    --strip the orig 'name - city, st' string in the table to just 'city, st'
    SELECT SUBSTRING(string, CHARINDEX('-', string) + 2, 200) AS city_and_state
) AS ca1
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

JSON is being used more and more, besides XML, and you surely wanted to parse the data out into SQL instead of doing it in some Javascript. The below function in SQL Server can do the job for you, returning a quick table with the parsed data.
I have a large data set and a SSIS package. How can I load this file in multi threading?
Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.
Via a live example, show how to setup several different housekeeping processes for a SQL Server.

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question