How to fetch SQL int values by passing comma separated string where condition?

Question

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I have a table dbo.StockDetails

SQL

INT Varchar   INT
ID StockName SectorID

1 Abc 1
2 Win 1
3 CBH 2
4 Tes 3
5 Ras 5
6 GAS 3

Expected Result
ID
1
2
3
6

What I have tried:

SQL

Declare @SectorID varchar(50)='1,2'
select ID from dbo.StockDetails where SectorID IN (@SectorID)

Conversion failed when Converting the varchar value '1,2' to data type int.

My input parameter @SectorID data type is String with comma separator i mean its 1,2
Is there any possible way to fetch without creating a sql function?

Posted 16-Mar-22 3:11am

Salt Pepper

Updated 16-Mar-22 4:16am

RickZeeland

v3

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Maciej Los · Answer 1 · 2022-03-16T04:16:00

If you use MS SQL Server, you can use STRING_SPLIT (Transact-SQL) - SQL Server | Microsoft Docs[^]

MSDN wrote:
As an example, the following SELECT statement uses the space character as the separator:

SQL
SELECT value FROM STRING_SPLIT('Lorem ipsum dolor sit amet.', ' ');
In a practice run, the preceding SELECT returned following result table:
value
------
Lorem
ipsum
dolor
sit
amet
.

Then you can join data, like this:

SQL

SELECT ID, StockName, SectorID  
FROM StockDetails
JOIN STRING_SPLIT(@SectorID,',')
    ON value = SectorID;

As an alternative, you can use CTE[^] or custom function[^] to split string into parts.

Good luck

M Imran Ansari · Answer 2 · 2022-03-16T03:26:00

Solution 1

You can achieve this through dynamic query like:

DECLARE @SectorID varchar(50) = '1,2'
DECLARE @Query VARCHAR(1000)
SET @Query = 'SELECT ID FROM [dbo].[StockDetails] WHERE SectorID IN (' + @SectorID + ')';
EXEC (@Query)

Posted 16-Mar-22 3:26am

M Imran Ansari

Comments

Richard Deeming 16-Mar-22 10:54am

Which, unless you're extremely careful in constructing the parameter value, will leave you vulnerable to SQL Injection[^].