Solved

How can I trim certain characters in SQL?

Posted on 2011-09-26
4
270 Views
Last Modified: 2012-06-27
How can I trim certain characters in a query?

I have a column that had some records containing the value: 12345-123
I only want to select the characters before the dash.

So I want to trim the dash and all characters at the right of the dash.
(So it returns the value: 12345)

Best regards,
Clyde.
0
Comment
Question by:Clyde_Radcliffe
  • 2
4 Comments
 
LVL 6

Expert Comment

by:kswathi
ID: 36597606
0
 
LVL 6

Expert Comment

by:kswathi
ID: 36597616
0
 
LVL 3

Expert Comment

by:John_Arifin
ID: 36597972
Select Left(YourField, charindex('-', YourField) - 1) from YourTable
0
 
LVL 92

Accepted Solution

by:
Patrick Matthews earned 500 total points
ID: 36599320
If the data will ALWAYS have a dash, then John_Arifin's suggestion will work splendidly.

If there is any possibility that there is no dash, would you want the whole string returned, or nothing?  If the former:

SELECT LEFT(SomeColumn, CHARINDEX('-', SomeColumn + '-') - 1) AS Answer
FROM SomeTable

Open in new window


If the latter, this excludes records where there is no dash:

SELECT LEFT(SomeColumn, CHARINDEX('-', SomeColumn) - 1) AS Answer
FROM SomeTable
WHERE SomeColumn LIKE '%-%'

Open in new window


and this returns a null:

SELECT CASE 
    WHEN SomeColumn LIKE '%-%' THEN LEFT(SomeColumn, CHARINDEX('-', SomeColumn) - 1)
    ELSE NULL END AS Answer
FROM SomeTable

Open in new window


and this returns a zero length string:

SELECT CASE 
    WHEN SomeColumn LIKE '%-%' THEN LEFT(SomeColumn, CHARINDEX('-', SomeColumn) - 1)
    ELSE '' END AS Answer
FROM SomeTable

Open in new window

0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

Suggested Solutions

International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
For both online and offline retail, the cross-channel business is the most recent pattern in the B2C trade space.
Via a live example, show how to extract insert data into a SQL Server database table using the Import/Export option and Bulk Insert.
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.

772 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