If I have this multiupdate query UPDATE user u INNER JOIN user_profile up ON up.user_id = u.id SET u.name = \'same_name_i_already_had\', up.profile.age = 25
This question is a logical continuation of this one: How many rows will be locked by SELECT ... ORDER BY xxx LIMIT 1 FOR UPDATE?
I have a query with the following structure: SELECT ..... WHERE status = \'QUEUED\' ORDER BY position ASC LIMIT 1 FOR UPDATE;
I\'m selecting the available login infos from a DB randomly via the stored procedure below. But when multiple threads want to get the available login infos, duplicate records are returned although I\'
I\'m trying to use rowlock to prevent certain rows being updated while it\'s running but the problem is that I can\'t use the tables at all while running this:
I have an application which currently reads data from a table using the following stored procedure: CREATE PROCEDURE [dbo].[GetBatchOfEmails]
I have upgraded from SQL Server 2005 to 2008. I remember that in 2005, ROWLOCK simply did not work and I had to use PAGELOCK or XLOCK to achieve any type of actual locking. I know a reader of this wil
Is there a way to perform a set of non-atomic actions on MongoDB server (using the Ruby driver) as an single atomic action? What I need is basically a lo开发者_如何学Pythonck on certain object/collect
I keep r开发者_JAVA百科unning into \"enq: TX - row lock contention\", when I run the Sql command below in a oracle 9 DB.
I have an InnoDB table containing users, like this: +--------------+-----------------------+ user_id| name|
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