Oct 23,  · The short name for Descending is DESC. SQL Syntax for DESC and ASC SELECT language, year FROM proglang_tbl ORDER BY year DESC, language ASC; Explanation. The above result gives ordered results by YEAR. The ASC and DESC role is to sort the results. DESC Vs ASC. By default all the results in ORDER BY are Ascending – default is ASC; In DESC, the. ORDER BY in MySQL: DESC & ASC. Details Last Updated: 04 March Sorting Results. We looked at how to get data from our tables using the SELECT command. Results were returned in the same order the records were added into the database. This is the default sort order. In this section, we will be looking at how we can sort our query results. The desc qualifier (which stands for descending, i.e. high to low) changes the sequence from the default of low to high. Data is ordered depending on the data type. Text is ordered according to collating sequence, numbers from low to high (e.g. is before 5), and dates are ordered from earliest to latest.

Desc vs asc mysql

To sort in reverse (descending) order, add the DESC keyword to the name of the You can sort on multiple columns, and you can sort different columns in. If a query mixes ASC and DESC, the optimizer can use an index on the columns if the index also uses corresponding mixed ascending and descending. Updated Answer for MySQL As noted by Kazimieras Aliulis in the comments, support for descending indexes is being added in MySQL MySQL supports. Sorting of data is done using the SELECT command and it can be done on strings, number as well as date data types. Both DESC and ASC. The MySQL ORDER BY clause is used to sort the records in your result set. If the ASC or DESC modifier is not provided in the ORDER BY clause, the results. The SQL ORDER BY Keyword. The ORDER BY keyword is used to sort the result -set in ascending or descending order. The ORDER BY keyword sorts the. To sort in reverse (descending) order, add the DESC keyword to the name of the You can sort on multiple columns, and you can sort different columns in. If a query mixes ASC and DESC, the optimizer can use an index on the columns if the index also uses corresponding mixed ascending and descending. Updated Answer for MySQL As noted by Kazimieras Aliulis in the comments, support for descending indexes is being added in MySQL MySQL supports. This tutorial introduces you to MySQL descending index and how to leverage it to increase the performance of queries. Hi, MySQL 4+ can use indexes for ORDER BY DESC ( can only in some cases) in every case that ASC can. However, reading a packed index in reverse order is slower. I don't think your index is packed, though, if it's a date-type column, unless you've specified PACK_KEYS in your CREATE TABLE. Better check with SHOW INDEX FROM PhoneCalls. SQL Index Performance - ASC vs DESC. Ask Question 2. In MySQL defining ASC or DESC for indexes is not only unsupported, but it would also be pointless. MySQL can traverse indexes in both directions as needed, so it does not require the order to be defined explicitly. Oct 23,  · The short name for Descending is DESC. SQL Syntax for DESC and ASC SELECT language, year FROM proglang_tbl ORDER BY year DESC, language ASC; Explanation. The above result gives ordered results by YEAR. The ASC and DESC role is to sort the results. DESC Vs ASC. By default all the results in ORDER BY are Ascending – default is ASC; In DESC, the. The desc qualifier (which stands for descending, i.e. high to low) changes the sequence from the default of low to high. Data is ordered depending on the data type. Text is ordered according to collating sequence, numbers from low to high (e.g. is before 5), and dates are ordered from earliest to latest. ORDER BY in MySQL: DESC & ASC. Details Last Updated: 04 March Sorting Results. We looked at how to get data from our tables using the SELECT command. Results were returned in the same order the records were added into the database. This is the default sort order. In this section, we will be looking at how we can sort our query results. Mar 29,  · When you query a MySQL database, you can sort the results by any field in an ascending or descending order just by adding ORDER BY at the end of your dukaguru.com use ORDER BY field_name ASC for an ascending sort (which is the default) or ORDER BY field_name DESC for a descending sort. You can use an ORDER BY clause in a SELECT statement, SELECT LIMIT or DELETE LIMIT .

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Mysql database tutorial asc, desc and between. part 3, time: 9:16
Tags: Video 11 september 2001 presentation , , Windows 7 ultimate iso microsoft , , Snehulienka a lovec firefox . ORDER BY in MySQL: DESC & ASC. Details Last Updated: 04 March Sorting Results. We looked at how to get data from our tables using the SELECT command. Results were returned in the same order the records were added into the database. This is the default sort order. In this section, we will be looking at how we can sort our query results. Hi, MySQL 4+ can use indexes for ORDER BY DESC ( can only in some cases) in every case that ASC can. However, reading a packed index in reverse order is slower. I don't think your index is packed, though, if it's a date-type column, unless you've specified PACK_KEYS in your CREATE TABLE. Better check with SHOW INDEX FROM PhoneCalls. SQL Index Performance - ASC vs DESC. Ask Question 2. In MySQL defining ASC or DESC for indexes is not only unsupported, but it would also be pointless. MySQL can traverse indexes in both directions as needed, so it does not require the order to be defined explicitly.

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