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sqlite plugin: aggregate extents from rtree spatial index

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This commit is contained in:
Dane Springmeyer 2011-04-01 04:35:56 +00:00
parent ede84d5932
commit 6517f52dcf
1 changed files with 1 additions and 1 deletions
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2
plugins/input/sqlite/sqlite_datasource.cpp
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@ -150,7 +150,7 @@ void sqlite_datasource::bind() const
if (!extent_initialized_ && use_spatial_index_) if (!extent_initialized_ && use_spatial_index_)
{ {
std::ostringstream s; std::ostringstream s;
s << "SELECT xmin, ymin, xmax, ymax FROM " s << "SELECT MIN(xmin), MIN(ymin), MAX(xmax), MAX(ymax) FROM "
<< "idx_" << geometry_table_ << "_" << geometry_field_; << "idx_" << geometry_table_ << "_" << geometry_field_;
boost::scoped_ptr<sqlite_resultset> rs (dataset_->execute_query (s.str())); boost::scoped_ptr<sqlite_resultset> rs (dataset_->execute_query (s.str()));
if (rs->is_valid () && rs->step_next()) if (rs->is_valid () && rs->step_next())