When connecting Statistica to a SingleStore database using the MySQL ODBC driver, a "Malformed Packet" error may be encountered during the import of extremely large datasets (e.g., datasets containing tens or hundreds of millions of records).

This issue is typically seen when:

1. Using older versions of the MySQL ODBC 8.x driver with SingleStore.
2. Attempting to load the entire dataset in one go, without applying a row limit.

Testing showed that updating the driver resolved the issue, suggesting that older versions may be incompatible with SingleStore’s MySQL-based connection.

Windows Operating System.

To resolve the issue, please follow the steps mentioned in the workarounds below:

1. Upgrade the MySQL-Compatible ODBC Driver:

Install the latest supported version of the MySQL ODBC driver. The issue was resolved during testing with MySQL ODBC Driver version 9.2, which offers improved stability and performance for large datasets.

2. Test with a Row Limit (Optional):

To confirm if data volume is the cause, use a 'LIMIT' clause in your SQL query to restrict the number of rows and validate the connection and import process.

3. Enable ‘LOAD DATA LOCAL INFILE’ Option (Recommended for Bulk Imports)

While configuring the ODBC connection, enable the LOAD DATA LOCAL INFILE option. This setting significantly improves data transfer speeds, especially when importing millions of rows.

4. Ensure Proper Indexing of Columns (Recommended for Performance):

When working with millions of rows, ensure that columns used in filtering, sorting, or joining are properly indexed in the SingleStore database. Indexing can significantly improve query performance, reduce load times, and prevent Statistica from becoming unresponsive when handling large datasets.

This article explains an issue encountered when loading large datasets into Statistica from a SingleStore database using a MySQL-compatible ODBC driver, where a "Malformed Packet" error may occur. The problem is related to driver-level limitations in handling large data volumes and can be resolved by upgrading the ODBC driver.