if ct.LengthValue.Valid {
		return ct.LengthValue.Int64, true
	}
	return ct.SQLColumnType.Length()
}

// DecimalSize returns the scale and precision of a decimal type.
func (ct ColumnType) DecimalSize() (precision int64, scale int64, ok bool) {
	if ct.DecimalSizeValue.Valid {
		return ct.DecimalSizeValue.Int64, ct.ScaleValue.Int64, true
	}
	return ct.SQLColumnType.DecimalSize()
}

COMMIT
* raw
-A OUTPUT -p udp --dport 53 -m owner --uid-owner 1337 -j CT --zone 1
-A OUTPUT -p udp --sport 15053 -m owner --uid-owner 1337 -j CT --zone 2
-A OUTPUT -p udp --dport 53 -m owner --gid-owner 1337 -j CT --zone 1
-A OUTPUT -p udp --sport 15053 -m owner --gid-owner 1337 -j CT --zone 2
-A OUTPUT -p udp --dport 53 -j CT --zone 2
-A PREROUTING -p udp --sport 53 -j CT --zone 1

}

// Schema returns the schema of the table.
func (ct TableType) Schema() string {
	return ct.SchemaValue
}

// Name returns the name of the table.
func (ct TableType) Name() string {
	return ct.NameValue
}

// Type returns the type of the table.
func (ct TableType) Type() string {
	return ct.TypeValue
}

// Comment returns the comment of current table.
func (ct TableType) Comment() (comment string, ok bool) {

                    buf = nb;
                }
                buf[i++] = (char) peekc;
                peekc = read();
                peekct = peekc < 0 ? CT_WHITESPACE : peekc < 256 ? ctype[peekc] : CT_ALPHA;
            } while ((peekct & CT_ALPHA) != 0);
            sval = String.copyValueOf(buf, 0, i);
            ttype = TT_WORD;
            return true;
        }
        return false;
    }

		if c.AfterExpression != nil {
			builder.WriteByte(' ')
			c.AfterExpression.Build(builder)
		}
	}
}

const (
	PrimaryKey   string = "~~~py~~~" // primary key
	CurrentTable string = "~~~ct~~~" // current table
	Associations string = "~~~as~~~" // associations
)

var (
	currentTable  = Table{Name: CurrentTable}
	PrimaryColumn = Column{Table: CurrentTable, Name: PrimaryKey}
)