In a character sort, the values are case-sensitive.NULL values are not considered at all by the sort operation.Only those columns that are specified in the SELECT list can be used in the ORDER BY clause.Numeric values are displayed from the maximum to the minimum value if they have decimal positions.

It seems like you've made a statement rather than asking a question. However, I can provide some clarification based on your statement.

1. Character Sort: In many programming languages and databases, sorting is indeed case-sensitive. This means 'a' and 'A' would be considered as different characters during the sort.

2. NULL values: Depending on the system, NULL values may be ignored during a sort operation or they may be considered as the lowest possible value.

3. SELECT and ORDER BY: In SQL, you can only use columns in the ORDER BY clause that are specified in the SELECT list. This is because the ORDER BY clause sorts the results of the query, and it can only sort based on the data that is returned by the SELECT statement.

4. Numeric Values: By default, numeric values are sorted from smallest to largest. If you want to display numeric values from maximum to minimum, you would need to specify this in your ORDER BY clause (e.g., ORDER BY column_name DESC).

Please let me know if you have any specific questions about these topics.