Bug report #987
PostGIS: zeros instead of NULLs in a table
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Low | ||
| Assignee: |  Jürgen Fischer | ||
| Category: | Data Provider | ||
| Affected QGIS version: | Regression?: | No | |
| Operating System: | All | Easy fix?: | No |
| Pull Request or Patch supplied: | Resolution: | fixed | |
| Crashes QGIS or corrupts data: | Copied to github as #: | 11047 |
Description
1. Add a numeric column to your PostGIS table (in QGIS or any other client).
2. "Open Table" or "Identify Features" - see QGIS claims there are '0', instead of empty cells (NULL) in the column, although you did not enter them.
Actually these zeros are not there. These are NULL cells. Only QGIS displays them bogus.
This way you can't distinguish between cells really containing 0 and NULL. Moreover, you can't fill a NULL cell with a real 0 in QGIS - it will claim nothing changed in the table and won't let you save changes.
r8213
Associated revisions
- Support NULL database values (fixes #987 and #988)
- check for NULL values on load
- show "NULL" in attribute table and identify results
- support entry of "NULL" in attribute table or dialog
- free result of PQexec in postgres provider (fixes memory leaks)
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@8217 c8812cc2-4d05-0410-92ff-de0c093fc19c
- Support NULL database values (fixes #987 and #988)
- check for NULL values on load
- show "NULL" in attribute table and identify results
- support entry of "NULL" in attribute table or dialog
- free result of PQexec in postgres provider (fixes memory leaks)
git-svn-id: http://svn.osgeo.org/qgis/trunk@8217 c8812cc2-4d05-0410-92ff-de0c093fc19c
History
#1
Updated by Maciej Sieczka - about 16 years ago
#988 is related.
#2
Updated by cgsbob - about 16 years ago
Replying to [comment:1 msieczka]:
#988 is related.
Also look at #962. [https://trac.osgeo.org/qgis/attachment/ticket/962/nullprob.png] illustrates the problem.
#3
Updated by Jürgen Fischer about 16 years ago
- Resolution set to fixed
- Status changed from Open to Closed
#4 Updated by Anonymous over 14 years ago
Milestone Version 0.9.2 deleted