| Analysis of the search query | linq to sql select row with max value |
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Top competitors on query "linq to sql select row with max value"
http://weblogs.asp.net/scottgu/archive/2007/08/23/linq-to-sql-part-7-updating-our-database-using-stored-procedures.aspx Competition: low
On the downside, SPROCs are usually much more time consuming to create when you are building a rich object model for your data layer, and end up being much harder to test and refactor. Is there a way to disable this feature? You can solve this one of two ways: 1) Manually modify the name of the class that you generated within the designer
http://www.xaprb.com/blog/2006/12/07/how-to-select-the-firstleastmax-row-per-group-in-sql/ Competition: low
The subquery is implemented as a temporary table behind the scenes, so filling it with data is one pass; then selecting every row from it and applying the WHERE clause is another. The calculation I googled so far are all correlation queries which are far too complex and not practical for tables with millions of records, because of the poor performance
http://geekswithblogs.net/michelotti/archive/2008/07/08/linq-to-sql---return-scalar-value-from-a-stored.aspx Competition: low
Have you debugged your L2S code by attaching to the Log property of the data context? This will show you all the SQL that is emitted from L2S while it's running and you can run it directly against SQL. That means that I'd have to change my stored procedure to alias my scalar data like this: 1: SELECT FirstName as Value Although this is a downside, I believe it's well worth it in order to realize all the other benefits of quick implementation and avoiding duplicate and unnecessary code
http://weblogs.asp.net/scottgu/archive/2007/09/07/linq-to-sql-part-9-using-a-custom-linq-expression-with-the-lt-asp-linqdatasource-gt-control.aspx Competition: low
I could have a common method which is responsible for reading the connection string and creating an instance, but then you would need to know about that method, which is now even further away from the default constructor. I for one would like to be able to trap this event so that I can store the original value prior to the change and thus enable undo functionality from within a base class, but with the event being fired without any valid arguments it is practically useless
oracle - SQL - How to select a row having a column with max value - Stack Overflow
http://stackoverflow.com/questions/2854257/sql-how-to-select-a-row-having-a-column-with-max-value Competition: low
Now if the date spans for 10 days, I need to make this query for each of the 10 days resulting in 10 rows, with each having a max value of that particular day
On the downside, SPROCs are usually much more time consuming to create when you are building a rich object model for your data layer, and end up being much harder to test and refactor. Is there a way to disable this feature? You can solve this one of two ways: 1) Manually modify the name of the class that you generated within the designer
The subquery is implemented as a temporary table behind the scenes, so filling it with data is one pass; then selecting every row from it and applying the WHERE clause is another. The calculation I googled so far are all correlation queries which are far too complex and not practical for tables with millions of records, because of the poor performance
Have you debugged your L2S code by attaching to the Log property of the data context? This will show you all the SQL that is emitted from L2S while it's running and you can run it directly against SQL. That means that I'd have to change my stored procedure to alias my scalar data like this: 1: SELECT FirstName as Value Although this is a downside, I believe it's well worth it in order to realize all the other benefits of quick implementation and avoiding duplicate and unnecessary code
I could have a common method which is responsible for reading the connection string and creating an instance, but then you would need to know about that method, which is now even further away from the default constructor. I for one would like to be able to trap this event so that I can store the original value prior to the change and thus enable undo functionality from within a base class, but with the event being fired without any valid arguments it is practically useless
oracle - SQL - How to select a row having a column with max value - Stack Overflow
Now if the date spans for 10 days, I need to make this query for each of the 10 days resulting in 10 rows, with each having a max value of that particular day
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