aspose file tools*
The moose likes JDBC and the fly likes SQL SUBSTRING command problem Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of The Java EE 7 Tutorial Volume 1 or Volume 2 this week in the Java EE forum
or jQuery UI in Action in the JavaScript forum!
JavaRanch » Java Forums » Databases » JDBC
Bookmark "SQL SUBSTRING command problem" Watch "SQL SUBSTRING command problem" New topic
Author

SQL SUBSTRING command problem

Bob Backlund
Ranch Hand

Joined: Jun 05, 2003
Posts: 51
Quite simple really, I have a table with a shift_id which is generated by date (ddmmyyyhhmmss) plus '_userid' (example 24032006132015_01). I need to check that a user doesn;t have a shift time for today already entered, so I'm checking the substring of the first 8 characters to see if they match todays date, here is my SQL command:

[SELECT * FROM tblTimeSheet WHERE (SUBSTRING(shift_id, 0, 8) = '24032006')]

So how come this returns NULL when there are clearly 5 rows in my DB which have 24032006 at the start of the shift_id?


Cheers!
Bob Backlund
Ranch Hand

Joined: Jun 05, 2003
Posts: 51
It's OK, I've sorted it (it's Friday), the substring has to be from 1,8 NOT 0,8
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: SQL SUBSTRING command problem