presto-main/src/main/java/io/prestosql/connector/system/jdbc/ColumnJdbcTable.java/ColumnJdbcTable/addColumnRows
class ColumnJdbcTable:    private static void addColumnRows(Builder builder, String catalog, SchemaTableName tableName, List<ColumnMetadata> columns)
    {
        int ordinalPosition = 1;
        for (ColumnMetadata column : columns) {
            if (column.isHidden()) {
                continue;
            }
            builder.addRow(
                    catalog,
                    tableName.getSchemaName(),
                    tableName.getTableName(),
                    column.getName(),
                    jdbcDataType(column.getType()),
                    column.getType().getDisplayName(),
                    columnSize(column.getType()),
                    0,
                    decimalDigits(column.getType()),
                    numPrecRadix(column.getType()),
                    DatabaseMetaData.columnNullableUnknown,
                    column.getComment(),
                    null,
                    null,
                    null,
                    charOctetLength(column.getType()),
                    ordinalPosition,
                    "",
                    null,
                    null,
                    null,
                    null,
                    null,
                    null);
            ordinalPosition++;
        }
    }