Non-relational databases are attracting more attention day by day. The main limitation is that today\'s complicated data are indeed connected. Isn\'t it convenient to connect databases as we connect t
Is a MongoDB\'s NumberLong really 64 bit signed integer really 64 bit? MongoDB\'s NumberLong is said to be a 64 bit signed integer, which should mean we can play with -2^开发者_运维问答63 <= x <
I am using ASP.NET with C# and I need to make the condition of the query dynamic, Example: Database: NameSex
Okay, so I have successfully retrieved rows from my db where i have fields : ref,fname,lname,event1,event2,event3.
I\'m trying to retrieve the closest adjacent rows (above and below) a record in a result set that match a certain condition.
My company has a fairly old fat client application written in Delphi. We are very interested in replacing it with a shiny new web application. This will make maintenance a breeze and many clients want
I have an SQL query wtih a lot of joins. The fact is that before the query had to join the StudentClass table and Class table, it outputted the correct amount of rows which should be 4 rows. But when
I have a DB table with the following structure id | dateCreated | numOfUsers Where a typical row is 1, \'2011-10-13 12:00:00\', 4
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I\'d like to have access to the numbers and type of public transportation and for each of them, their stops of a certain city. So for instance, I\'d like to have :
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