Question
I'm using Entity Framework to get the total row count for a table. I simply want the row count, no where clause or anything like that. The following query works, but is slow. It took about 7 seconds to return the count of 4475.
My guess here is that it's iterating through the entire table, just like how IEnumerable.Count() extension method works.
Is there a way I can get the total row count "quickly"? is there a better way?
public int GetLogCount()
{
using (var context = new my_db_entities(connection_string))
{
return context.Logs.Count();
}
}
Accepted Answer
That is the way to get your row count using Entity Framework. You will probably see faster performance on the second+ queries as there is an initialization cost the first time that you run it. (And it should be generating a Select Count() query here, not iterating through each row).
If you are interested in a faster way to get the raw row count in a table, then you might want to try using a mini ORM like Dapper or OrmLite.
You should also make sure that your table is properly defined (at the very least, that it has a Primary Key), as failure to do this can also affect the time to count rows in the table.
Popular Answer
You can even fire Raw SQL query using entity framework as below:
var sql = "SELECT COUNT(*) FROM dbo.Logs";
var total = context.Database.SqlQuery<int>(sql).Single();
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