Set bbox parameters directly in the query. This seems to fix the performance gap.

src/main.rs

@@ -16,13 +16,6 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         set preserve_insertion_order = false;
         "#,
     )?;
-    let mut stmt = conn.prepare("select * from duckdb_settings()")?;
-    let mut rows = stmt.query([])?;
-    while let Some(row) = rows.next()? {
-        let name: String = row.get(0)?;
-        let value: String = row.get(1)?;
-        println!("{}: {}", name, value);
-    }
     let xmin = -97.734375;
     let xmax = -97.3828125;
     let ymin = 30.234375;
@@ -37,20 +30,13 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         let table = t.split('=');
         let table = table.last().unwrap();
         let root = format!("{ROOT}/{t}/*");
-        println!("Making table");
         println!(
             r#"create table {table} as select * from read_parquet("{root}") where bbox.xmin between {xmin} and {xmax} and bbox.ymin between {ymin} and {ymax};"#
         );
         let query = format!(
-            r#"create table {table} as select * from read_parquet(?) where bbox.xmin between ? and ? and bbox.ymin between ? and ?;"#
+            r#"create table {table} as select * from read_parquet(?) where bbox.xmin between {xmin} and {xmax} and bbox.ymin between {ymin} and {ymax};"#
         );
-        conn.execute(&query, params![root, xmin, xmax, ymin, ymax,])?;
-        println!("Counting");
-        conn.query_row(&format!("select count() from {table};"), [], |row| {
-            let count: usize = row.get(0).unwrap();
-            println!("{count}");
-            Ok(())
-        })?;
+        conn.execute(&query, params![root,])?;
     }
     Ok(())
 }