**My System:**
MW: 1.25.5 PHP: 5.6.23 PostgresSQL: 9.4.6 SMW: 2.3.1 SM Drilldown: 2.0.2
**My Problem:**
Whenever I want to use Special:BrowseData there is an issue with my Database:
```
CREATE TEMPORARY TABLE semantic_drilldown_filter_values AS SELECT s_id AS id, (IF(o_blob IS NULL, o_hash, CONVERT(o_blob using utf8))) AS value FROM "smw_di_blob" JOIN "smw_object_ids" p_ids ON "smw_di_blob".p_id = p_ids.smw_id WHERE p_ids.smw_title = 'WorkflowStatus'
```
I googled for this issue and found there ist no
```
CONVERT(o_blob using utf8)
```
function in PostgreSQL.
**MyBacktrace:**
```
#0 /srv/www/htdocs/SemanticMediaWiki/includes/db/DatabasePostgres.php(539): DatabaseBase->reportQueryError('ERROR: syntax ...', '42601', '\tCREATE TEMPORA...', 'DatabaseBase::q...', false)
#1 /srv/www/htdocs/SemanticMediaWiki/includes/db/Database.php(1205): DatabasePostgres->reportQueryError('ERROR: syntax ...', '42601', '\tCREATE TEMPORA...', 'DatabaseBase::q...', false)
#2 /srv/www/htdocs/SemanticMediaWiki/extensions/SemanticDrilldown/includes/SD_Filter.php(426): DatabaseBase->query('\tCREATE TEMPORA...')
#3 /srv/www/htdocs/SemanticMediaWiki/extensions/SemanticDrilldown/specials/SD_BrowseData.php(970): SDFilter->createTempTable()
#4 /srv/www/htdocs/SemanticMediaWiki/extensions/SemanticDrilldown/specials/SD_BrowseData.php(1187): SDBrowseDataPage->printUnappliedFilterLine(Object(SDFilter), '/XXX...')
#5 /srv/www/htdocs/SemanticMediaWiki/includes/specialpage/QueryPage.php(537): SDBrowseDataPage->getPageHeader()
#6 /srv/www/htdocs/SemanticMediaWiki/extensions/SemanticDrilldown/specials/SD_BrowseData.php(127): QueryPage->execute('Kapitel')
#7 /srv/www/htdocs/SemanticMediaWiki/includes/specialpage/SpecialPage.php(384): SDBrowseData->execute('Kapitel')
#8 /srv/www/htdocs/SemanticMediaWiki/includes/specialpage/SpecialPageFactory.php(582): SpecialPage->run('Kapitel')
#9 /srv/www/htdocs/SemanticMediaWiki/includes/MediaWiki.php(263): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#10 /srv/www/htdocs/SemanticMediaWiki/includes/MediaWiki.php(634): MediaWiki->performRequest()
#11 /srv/www/htdocs/SemanticMediaWiki/includes/MediaWiki.php(482): MediaWiki->main()
#12 /srv/www/htdocs/SemanticMediaWiki/index.php(41): MediaWiki->run()
#13 /srv/www/htdocs/SemanticMediaWiki/index.php5(26): require('/srv/www/htdocs...')
#14 {main}
```
Is this a real issue?