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- Dictionarydistinct/dɪˈstɪŋ(k)t/
adjective
- 1. recognizably different in nature from something else of a similar type: "the patterns of spoken language are distinct from those of writing" Similar Opposite
- 2. readily distinguishable by the senses: "a distinct smell of nicotine"
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To do this, you need to use an aggregate function to sort on, and use a GROUP BY to make the DISTINCT work. Try something like this: SELECT DISTINCT Category, MAX (CreationDate) FROM MonitoringJob GROUP BY Category ORDER BY MAX (CreationDate) DESC, Category. edited Dec 28, 2017 at 15:48. answered Mar 22, 2011 at 13:01.
Mar 31, 2010 · Interesting scenario. As you found, SELECT DISTINCT(a), b, c. is equivalent to: SELECT DISTINCT (a), b, c. is equivalent to: SELECT DISTINCT a, b, c. i.e. the parentheses are treated as expression grouping parentheses. Interestingly, a very similar issue occurs in VB6/VBScript where (for Function (byref x)) Function (x), Function x and Call ...
Jun 19, 2016 · 11. DISTINCT (or DISTINCTROW) is not a function; it is an option of the SELECT statement that tells MySQL to strip duplicate rows from the resultset generated by the query. By default it returns all the generated rows, including the duplicates. It can also be used together with COUNT() aggregate function (as COUNT(DISTINCT expr)) and it has the ...
Feb 19, 2017 · The reason DISTINCT and GROUP BY work on entire rows is that your query returns entire rows. To help you understand: Try to write out by hand what the query should return and you will see that it is ambiguous what to put in the non-duplicated columns.
Jan 29, 2009 · In case you need a Distinct method on multiple properties, you can check out my PowerfulExtensionslibrary. Currently it's in a very young stage, but already you can use methods like Distinct, Union, Intersect, Except on any number of properties; This is how you use it: using PowerfulExtensions.Linq;...var distinct = myArray.Distinct(x => x.A, x ...
Oct 15, 2012 · I want to get the unique values from the following list: ['nowplaying', 'PBS', 'PBS', 'nowplaying', 'job', 'debate', 'thenandnow'] The output which I require is ...
While query select distinct count(a) will give you list of unique counts of values in a. Without grouping it will be just one line with total count. See following example. create table t(a int) insert into t values (1),(2),(3),(3) select count (distinct a) from t select distinct count (a) from t group by a
Dec 27, 2010 · In order to avoid ORDER BY items must appear in the select list if SELECT DISTINCT error, the best should be. var results = ( from ta in DBContext.TestAddresses select ta.Name ) .Distinct() .OrderBy( x => 1);
var distinctValues = myStringList.Distinct(); Well and good, but if I have an enumerable of objects for which I need to specify equality, the only available overload is: var distinctValues = myCustomerList.Distinct(someEqualityComparer); The equality comparer argument must be an instance of IEqualityComparer<T>. I can do this, of course, but it ...
May 16, 2014 · 3. @DanielEarwicker this question is about "distinct by property". It would require the stream to be sorted by the same property, to be able to take advantage of it. First, the OP did never state that the stream is sorted at all. Second, streams are not able to detect whether they are sorted by a certain property.
