How to split string in SQL Server

Question

I'm trying to split the value from the model_interested column so that from the whole data only model display

SELECT SUBSTRING(model_interested, 20, CHARINDEX('model', model_interested)) AS model_interested 
FROM cust

From the image in model_interested column I wish to only display

"model":"A180"
"model":"A200 AMG FL"

I have tried splitting by number of characters but I don't think it's the right way.

Answer 1

You can use the following solution using SUBSTRING and CHARINDEX :

SELECT SUBSTRING(model_interested, CHARINDEX('"model":"', model_interested) + LEN('"model":"'), CHARINDEX('"', model_interested, CHARINDEX('"model":"', model_interested) + LEN('"model":"')) - (CHARINDEX('"model":"', model_interested) + LEN('"model":"')))
FROM table_name

To get the whole property (with property name and value) you can use the following solution:

SELECT SUBSTRING(model_interested, CHARINDEX('"model":"', model_interested), CHARINDEX('"', model_interested, CHARINDEX('"model":"', model_interested) + LEN('"model":"')) - CHARINDEX('"model":"', model_interested) + 1)
FROM table_name

You can also use JSON_VALUE to get the expected value, but you have to change the data to a valid JSON value:

SELECT JSON_VALUE(REPLACE(REPLACE(model_interested, '{[', '[{'), ']}', '}]'), '$[0].model')
FROM table_name

demo on dbfiddle.uk

Answer 2

If using earlier version of SQL server than 2016, then you can write a query as:

;with cte as
(
 SELECT   
       Split.a.value('.', 'VARCHAR(100)') AS model_interested  
 FROM  (
         SELECT CAST ('<M>' + REPLACE([model_interested], '.', '</M><M>') + '</M>' AS XML)
                as  model_interested_xml
         FROM  @cust

        ) AS A CROSS APPLY model_interested_xml.nodes ('/M') AS Split(a)  
    )
select model_interested
from cte
where CHARINDEX('model',model_interested) > 0

demo here: https://rextester.com/CCW41495