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Is ASC default or DESC?
The ORDER BY clause provides your DBMS with a list of items to sort, and the order in which to sort them: either ascending order (ASC, the default) or descending order (DESC).
Can we use ASC and DESC in SQL?
The ORDER BY statement in sql is used to sort the fetched data in either ascending or descending according to one or more columns. We can use the keyword DESC to sort the data in descending order and the keyword ASC to sort in ascending order.
Does GROUP BY sort data in MySQL?
In MySQL, historically GROUP BY was used to provide sorting as well. If a query specified GROUP BY, the result was sorted as if ORDER BY was present in the query. MySQL here implicitly sorts the results from GROUP BY (i.e. in the absence of ASC or DESC designators for GROUP BY columns ).
What will happen if you don’t specify ASC or DESC after SQL ORDER BY clause?
Therefore, it cannot be used in table deletion. Explanation: If we have not specified any sorting with the ORDER BY clause, SQL always uses the ASC as a default sorting order. SQL treats Null as the lowest possible values while sorting. Both TRUNCATE and DELETE statement does not free the table’s space.
Is ORDER BY default ASC?
The keyword DESC in SQL, is used to sort the query result set in a descending order. The ASC keyword is used to sort the query result set in an ascending order. The default for ORDER BY when nothing has been explicitly specified is ASC.
Is ORDER BY name asc displays NULLs last?
Using the ASC order, a NULL value comes before any non-NULL value; using DESC order, the NULL comes last.
What is ASC and DESC SQL?
The keyword DESC in SQL, is used to sort the query result set in a descending order. The ASC keyword is used to sort the query result set in an ascending order. Both DESC and ASC work in conjunction with the ORDER BY keyword.
What does ORDER BY do in SQL?
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 records in ascending order by default. To sort the records in descending order, use the DESC keyword.
Is GROUP BY or ORDER BY first?
The ORDER BY clause must be the last clause that you specify in a query. If the query also contains a GROUP BY clause, the clause first arranges the output rows into groups. The ORDER BY clause then sorts the rows within each group.
What is the use of ORDER BY clause?
The SQL ORDER BY clause is used to sort the data in ascending or descending order, based on one or more columns. Some databases sort the query results in an ascending order by default.
How to remove group by ASC and DESC in MySQL?
The aim of this worklog is to remove the syntax for GROUP BY ASC and DESC. With this and the earlier removal of implicit sorting for GROUP BY, we can also remove some of the code which currently presumes that GROUP BY always sorts.
Is there a syntax for group by column in MySQL?
But what still remains is the non-standard extension that MySQL provides with GROUP BY clause to specify the order for GROUP BY columns – GROUP BY column ASC/DESC. The aim of this worklog is to remove the syntax for GROUP BY ASC and DESC.
Why is group by DESC not used in MySQL?
If you want the last id for each asker, then you should use an aggregate function: The reason why you were getting the unusual result is because MySQL uses an extension to GROUP BY which allows items in a select list to be nonaggregated and not included in the GROUP BY clause.
Which is part of group by [ ASC ] DESC?
In earlier versions the GROUP BY expression causes implicit ORDER BY by the same expression (until explicit ORDER BY clause specified) – and [ASC|DESC] allows to manipulate this implicit sorting. Now only explicit sorting is allowed. Actually asc and desc are not part of group by asc and desc come under order by.