Postgis raster shows random data with out-db image data

[qgib]

Author Name: asdf asdf (asdf asdf)
Original Redmine Issue: 8765
Affected QGIS version: 2.0.1
Redmine category:db_manager

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Out-db rasters from postgis database are shown as random data and sometimes crashes QGIS.

The problem might come from the way the database is queried.

Query made by QGIS taken from the server:
SELECT st_band(rast, 3), st_width(rast), st_height(rast), ....

As far as I have tested "st_band" in queries return data as out-db referenced rasters and contain no pixel data.
If there are no modification to the data like st_union or something like that, rasters stays as file references, which obviously cannot be used by the client over the network.

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Related issue(s): #17362 (duplicates)
Redmine related issue(s): 8628

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[qgib]

Author Name: asdf asdf (asdf asdf)

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Forgot to add details of the used version.

QGIS version 2.0.1-Dufour
QGIS code revision d94c044
Compiled against Qt 4.8.5
Running against Qt 4.8.5
Compiled against GDAL/OGR 1.10.0
Running against GDAL/OGR 1.10.1
Compiled against GEOS 3.4.2-CAPI-1.8.2
Running against GEOS 3.4.2-CAPI-1.8.2 r3921
PostgreSQL Client Version 9.2.4
SpatiaLite Version 4.1.1
QWT Version 5.2.3
PROJ.4 Version 480
QScintilla2 Version 2.7.2

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• priority_id was changed from Normal to High

[qgib]

Author Name: Giovanni Manghi (@gioman)

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should be duplicate of #17362

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• status_id was changed from Open to Feedback

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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• category_id was changed from Browser to DB Manager

[qgib]

Author Name: asdf asdf (asdf asdf)

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I'm not sure if this is duplicate of the #17362, this might actually be a just problem created by me by creating overviews manually as I have overviews for other use and didn't want to duplicate static raster data indb.

As a consequence of this self made overviews rasters are not indb and the overview query will fail as it relies that the data is always indb.

Anyways the question is should the overview query always expect indb data or not.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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Anyways the question is should the overview query always expect indb data or not.

better ask this in the developers mailing list and eventually close this as invalid.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• resolution was changed from to duplicate
• status_id was changed from Feedback to Closed