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17 sie 2011 · SELECT to_char( your_date_column, your_format_mask ) FROM your_table ORDER BY your_date_column In the SELECT list, you want to return a character string that represents the date in your preferred format. In the ORDER BY clause, you want to order by the actual date.
One way to order by positive integers, when they are stored as varchar, is to order by the length first and then the value: order by len(registration_no), registration_no This is particularly useful when the column might contain non-numeric values.
This tutorial shows you how to use the Oracle ORDER BY clause to sort rows by one or more columns in ascending or descending order.
An ORDER BY clause allows you to specify the order in which rows appear in the result set. In subqueries, the ORDER BY clause is meaningless unless it is accompanied by one or both of the result offset and fetch first clauses or in conjunction with the ROW_NUMBER function , since there is no guarantee that the order is retained in the outer ...
This Oracle tutorial explains how to use the Oracle ORDER BY clause with syntax and examples. The Oracle ORDER BY clause is used to sort the records in your result set. The ORDER BY clause can only be used in SELECT statements.
9 lis 2018 · Yes, if they are all numbers in the character field, you can: select * from T order by to_number (column); In fact, in Oracle8i, you could even create an index on to_number (column) and stand a chance of using that index in order to sort the data.
8 wrz 2015 · In this article we take a look at how you can influence the order of the data that is returned by queries. Setup. Introduction. Identify Columns : Expression, Position and Column Alias. Ascending (ASC) and Descending (DESC) Order. Handling NULLs : NULLS FIRST and NULLS LAST. Related articles. SQL for Beginners (Part 4) : The ORDER BY Clause.
