R Data Preparation and Manipulation Using the sqldf Package: Executing SQL Statements from Within R Program by Djoni Darmawikarta

Author:Djoni Darmawikarta [Darmawikarta, Djoni]
Language: eng
Format: epub
Published: 2017-01-25T08:00:00+00:00

The default direction is ascending. To order a column in descending direction, use the DESC reserved word.

Multiple Columns

To order by more than one column, list the columns in the ORDER BY clause. The sequence of columns listed is significant. The order will be conducted by the first column in the list, followed by the second column, and so on. For example, if the ORDER BY clause has two columns, the query output will first be ordered by the first column. Any rows with identical values in the first column will be further ordered by the second column.

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