Drop dataset before re-registering with duckdb

index.html

@@ -129,16 +129,19 @@
 						await initDuckDB();
 					}
 
-					// Register the parquet file
+					// Drop existing file registration if it exists
 					try {
-						await db.registerFileURL(
-							'data.parquet',
-							url,
-							duckdb.DuckDBDataProtocol.HTTP,
-							false
-						);
+						await db.dropFile('data.parquet');
 					} catch {}
 
+					// Register the parquet file
+					await db.registerFileURL(
+						'data.parquet',
+						url,
+						duckdb.DuckDBDataProtocol.HTTP,
+						false
+					);
+
 					// Query to get column information
 					const result = await conn.query("DESCRIBE 'data.parquet'");
 					const rows = result.toArray();
@@ -347,16 +350,18 @@
 
 					setStatus('Loading parquet file...', 'info');
 
-					// Register the parquet file from URL
+					// Drop existing file registration if it exists
 					try {
-						await db.registerFileURL(
-							'data.parquet',
-							parquetUrl,
-							duckdb.DuckDBDataProtocol.HTTP,
-							false
-						);
-					}
-					catch {}
+						await db.dropFile('data.parquet');
+					} catch {}
+
+					// Register the parquet file from URL
+					await db.registerFileURL(
+						'data.parquet',
+						parquetUrl,
+						duckdb.DuckDBDataProtocol.HTTP,
+						false
+					);
 
 					// Detect columns and populate visualization dropdown
 					currentDatasetUrl = parquetUrl;