I am having some issues with a group query with MySQL. Question Is there a reason why a query won\'t use a 10 character partial index on a varchar(255) field to optimize a group by?
I\'m trying to show messages in an organized wa开发者_JAVA百科y in my rails 3 app. I\'m trying to group the messages by a listing id and showing the latest message in that conversation belonging to th
I need to show data between time 06:00 - 18:00 and 18:00 - 06:00 at same time this is sample Query I M Using. I can not retrieve second group data. How to do?
I have a SQL like this; SELECT B.MUS_K_ISIM AS CUSTOMER_NAME, B.HESAP_NO AS CUSTOMER_NO, SUM(B.RISK) AS TOTAL_RISK,
How can i convert this in LINQ? SELECT B.SENDER, B.SENDNUMBER, B.SMSTIME, B.SMSTEXT FROM MESSAGES B WHERE EXISTS ( SELECT A.SENDER
I have a table in which there is a bitwise column representing a list of statuses that can be attached to an entry. Each entry can have multiple statuses selected (hence the use of the bitwise logic).
I\'m planning to support Android devices from 2.0 onwards so I am using a managedQuery to query contacts.I get multiple results for people with the same name and phone number so I would like those res
I\'m writing a messaging system like Facebook\'s new Messages system, where the entire back and forth between two users is considered one conversation开发者_如何学运维.(As opposed to traditional email
I have the following GROUP BY: var stocks = from p in products from w in p.Warehouses from l in w.locations
I have a table filled with bus stops. Each stop has a line_id, a direction and coordinates (lat and lng).
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