presto-main/src/main/java/io/prestosql/sql/planner/planprinter/IoPlanPrinter.java/TableColumnInfo/equals
class TableColumnInfo:            @Override
            public boolean equals(Object obj)
            {
                if (this == obj) {
                    return true;
                }
                if (obj == null || getClass() != obj.getClass()) {
                    return false;
                }
                TableColumnInfo o = (TableColumnInfo) obj;
                return Objects.equals(table, o.table) &&
                        Objects.equals(columnConstraints, o.columnConstraints) &&
                        Objects.equals(estimate, o.estimate);
            }