Order by least
I just want to select the newest 3 comments on a post, and have them ordered in ASC order.
According to Itzik Ben-Gan, author of T-SQL Fundamentals for MS SQL Server 2012, "By default, SQL Server sorts NULL marks before non-NULL values. ORDER BY clause can be used to sort the results returned by SELECT statement in SQL Server.
The ordering of the selected data can be done by one or more columns in a table. SQL ORDER BY Examples Problem: List all suppliers in alphabetical order SELECT CompanyName, ContactName, City, Country FROM Supplier ORDER BY CompanyName The default sort order is ascending, that is, low-high or a-z.
Summary: in this tutorial, you will learn how to use the Oracle ORDER BY clause to sort the result set by one or more columns in ascending or descending order.. Introduction to Oracle ORDER BY clause. SQL ORDER BY clause is used to order the data sets retrieved from a SQL database. This section describes when MySQL can use an index to satisfy an ORDER BY clause, the filesort operation used when an index cannot be used, and execution plan information available from the optimizer about ORDER BY.. An ORDER BY with and without LIMIT may return rows in different orders, as discussed in Section 8.2.1.17, “LIMIT Query Optimization”.
Sometimes, we need result set to be sorted in a custom order, for example, a specific value must appear at top of result set, and others can be sorted in standard order. This is a list of United States of America states by population as of 2019.The list was made using the 2019 Census estimates taken by the United States Census Bureau.The total population of the United States was 330,150,668 at the December 2019 Census.. To get NULL marks to sort last, you can use a CASE expression that returns 1 when the" Next_Contact_Date column is NULL, "and 0 when it is not NULL.Non-NULL marks get 0 back from the expression; therefore, they sort before NULL marks (which get 1). When used with character data type columns it sorts data in dictionary-order. If we want to sort our Users table by the FirstName column, we'll have to use the following ORDER BY SQL statement: In Oracle, a table stores its rows in unspecified order regardless of the order … It orders the result set by specified column list.