android contact database sqlite tutorial

Android contact database sqlite tutorial how to#

The SELECT statement that does not use ORDER BY clause returns a result set that is not in any order. Tracks Code language: SQL (Structured Query Language) ( sql )

Suppose, you want to get data from name, milliseconds, and album id columns, you use the following statement: SELECT name, Let’s take the tracks table in the sample database for the demonstration. You can sort the result set using a column that does not appear in the select list of the SELECT clause. Then, it sorts the sorted rows using the second column, and so on. In other words, the ORDER BY clause sorts the rows using the first column in the list. The ORDER BY clause sorts rows using columns or expressions from left to right. In case you want to sort the result set by multiple columns, you use a comma (,) to separate two columns. In other words, it sorts the result set in the ascending order by default. If you don’t specify the ASC or DESC keyword, SQLite sorts the result set using the ASC option. In this syntax, you place the column name by which you want to sort after the ORDER BY clause followed by the ASC or DESC keyword. It allows you to sort the result set based on one or more columns in ascending or descending order. The ORDER BY clause comes after the FROM clause. To sort the result set, you add the ORDER BY clause to the SELECT statement as follows: SELECTĬolumn_2 DESC Code language: SQL (Structured Query Language) ( sql ) If you use the SELECT statement to query data from a table, the order of rows in the result set is unspecified. It means that the rows in the table may or may not be in the order that they were inserted.

SQLite stores data in the tables in an unspecified order.

Android contact database sqlite tutorial how to#

Summary: in this tutorial, you will learn how to sort a result set of a query using SQLite ORDER BY clause.