相关疑难解决方法(0)

我有一个存储过程,它选择1条记录.可以从不同PC上的几个不同应用程序调用存储过程.这个想法是存储过程带回了需要处理的下一条记录,如果两个应用程序同时调用存储过程,则不应该返回相同的记录.我的查询如下,我正在尝试尽可能高效地编写查询(sql 2008).它可以比这更有效地完成吗？

CREATE PROCEDURE GetNextUnprocessedRecord
AS
BEGIN
    SET NOCOUNT ON;

    --ID of record we want to select back
    DECLARE @iID BIGINT     

    -- Find the next processable record, and mark it as dispatched
    -- Must be done in a transaction to ensure no other query can get
    -- this record between the read and update
    BEGIN TRAN

        SELECT TOP 1
            @iID = [ID]
        FROM
            --Don't read locked records, only lock the specific record
            [MyRecords] WITH (READPAST, ROWLOCK)
        WHERE
            [Dispatched] is null …