lib: Don't render empty filters to SQL
Else we are presented with syntax errors. fixes #9211
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@ -166,10 +166,12 @@ class DbQuery extends SimpleQuery
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$parts[] = $filterPart;
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}
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}
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if ($level > 0) {
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$str .= ' (' . implode($op, $parts) . ') ';
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} else {
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$str .= implode($op, $parts);
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if (! empty($parts)) {
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if ($level > 0) {
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$str .= ' (' . implode($op, $parts) . ') ';
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} else {
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$str .= implode($op, $parts);
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}
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}
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}
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} else {
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