presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/BaseJdbcClient.java/BaseJdbcClient/getColumns
class BaseJdbcClient:    protected static ResultSet getColumns(JdbcTableHandle tableHandle, DatabaseMetaData metadata)
            throws SQLException
    {
        return metadata.getColumns(
                tableHandle.getCatalogName(),
                escapeNamePattern(Optional.ofNullable(tableHandle.getSchemaName()), metadata.getSearchStringEscape()).orElse(null),
                escapeNamePattern(Optional.ofNullable(tableHandle.getTableName()), metadata.getSearchStringEscape()).orElse(null),
                null);
    }