prestodb/presto · error · SQLFeatureNotSupportedException

updateNString

Error message

updateNString

What it means

updateNString in PrestoResultSet always throws SQLFeatureNotSupportedException: national-character string updates on the current row are unsupported because Presto result sets are read-only and the NCHAR APIs are not implemented.

Source

Thrown at presto-jdbc/src/main/java/com/facebook/presto/jdbc/PrestoResultSet.java:1328

    public int getHoldability()
            throws SQLException
    {
        checkOpen();
        return ResultSet.HOLD_CURSORS_OVER_COMMIT;
    }

    @Override
    public boolean isClosed()
            throws SQLException
    {
        return closed.get();
    }

    @Override
    public void updateNString(int columnIndex, String nString)
            throws SQLException
    {
        throw new SQLFeatureNotSupportedException("updateNString");
    }

    @Override
    public void updateNString(String columnLabel, String nString)
            throws SQLException
    {
        throw new SQLFeatureNotSupportedException("updateNString");
    }

    @Override
    public void updateNClob(int columnIndex, NClob nClob)
            throws SQLException
    {
        throw new SQLFeatureNotSupportedException("updateNClob");
    }

    @Override
    public void updateNClob(String columnLabel, NClob nClob)

View on GitHub (pinned to 55bb57d202)

Solutions

1. Use a SQL UPDATE statement to change string column values
2. Read string columns with getString instead of N-string update APIs
3. Treat Presto result sets as non-updatable in application design

When it happens

Trigger: Thrown at presto-jdbc/src/main/java/com/facebook/presto/jdbc/PrestoResultSet.java:1328 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of prestodb/presto@55bb57d202 (2026-09-04). Data as JSON: /api/errors/4e9c0d77d3ad3085. Report an issue: GitHub.