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UCenter实现各系统通信的原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...查用户id变量$discuz_uid是否为空来判断，用户是否登录（包括从别的应用登录。）
如果用户从bbs登录，则在登录验证成功后通过如下代码：
$ucsynlogin = $allowsynlogin ? uc_user_synlogin($discuz_uid) : '';
通知其它应用----“用户已从bbs登...
How to use NULL or empty string in SQL
...ow to use NULL and an empty string at the same time in a WHERE clause in SQL Server. I need to find records that have either null values or an empty string. Thanks.
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SQL Server Management Studio won't let me add an index to a table
...ble just in case, and refreshed and restarted SSMS, but no luck. I'm using SQL Server 2012 Business Intelligence SP1 CTP.
5...
Lock Escalation - What's happening here?
While altering a table (removing a column) in SQL Server 2008, I clicked the Generate Change Script button and I noticed that the change script it generated drops the column, says "go" and then runs an additional ALTER TABLE statement that appears to set the lock escalation for the table to "TABLE"....
How to rename a table in SQL Server?
The SQL query that I have used is :
8 Answers
8
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How can I solve a connection pool problem between ASP.NET and SQL Server?
...he code between .Open and Close throws an exception:
var connection = new SqlConnection(connectionString);
connection.Open();
// some code
connection.Close();
The correct way would be this:
var connection = new SqlConnection(ConnectionString);
try
{
connection.Open();
s...
sql query to return differences between two tables
I am trying to compare two tables, SQL Server, to verify some data. I want to return all the rows from both tables where data is either in one or the other. In essence, I want to show all the discrepancies. I need to check three pieces of data in doing so, FirstName, LastName and Product.
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SQL-Server: The backup set holds a backup of a database other than the existing
I am trying to restore a SQL Server backup file for my database, but it is throwing an error as follow:
24 Answers
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“The certificate chain was issued by an authority that is not trusted” when connecting DB in VM Role
I am experiencing error when connecting MY DB which is in VM Role(I have SQL VM Role) from Azure Website. Both VM Role and Azure Website are in West zone. I am facing following issue:
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is it possible to select EXISTS directly as a bit?
...o BIT is not necessary to retrieve the results from the query, tested with SQL Server 2008 R2.
– Tore Aurstad
Mar 31 '15 at 9:09
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