The cursordata type cannot be used for a column in a CREATE TABLE statement. Note In this version of SQL Server, thecursor_nameoutput column ofsp_cursor_listandsp_describe_cursorreturns the name of the cursor variable. In previous releases, this output column returns a system-generated name....
MS SQL Server游标(CURSOR)的学习使用 下面代码示例中, 先是宣告你在游标中需使用变量,也就是临时存储处理字段的数据。 2. 宣告一个游标,并SELECT需要处理的数据集。 3. 打开游标(#6行代码)。 4. 从游标中拿来FETCH NEXT 数据给变量赋值。 5. 循环@@FETCH_STATUS = 0条件。 6. 在循环块,可以处理第一笔...
--备份的时候,sql2005 有一个小bug,备份不能放跟目录 backup database StuDB to disk='c:\backup\StuDb.bak' restore database StuDB from disk='c:\backup\StuDb.bak' --还原的时候,有时数据库正在使用,所以要先把这些使用这个数据库的进程结束 declare @spid int --声明游标 declare getSpid cursor ...
MS SQL SERVER 支持三种类型的游标:Transact_SQL 游标,API服务器游标和客户游标。 (1)Transact_SQL 游标 Transact_SQL 游标是由DECLARE CURSOR 语法定义、主要用在Transact_SQL脚本、存储过程和触发器中。Transact_SQL 游标主要用在服务器上,由从客户端发送给服务器的Transact_SQL 语句或是批处理、存储过程、触发器...
In SQL Server, the SELECT statement in a cursor definition is subject to the same transaction locking rules that apply to any other SELECT statement. In cursors, however, an additional set of scroll locks can be acquired based on the specification of a cursor concurrency level. ...
Tutorial: Writing Transact-SQL Statements BACKUP and RESTORE Statements (Transact-SQL) Built-in Functions (Transact-SQL) Collation (Transact-SQL) Control-of-Flow Language (Transact-SQL) Cursors (Transact-SQL) Cursors (Transact-SQL) CLOSE (Transact-SQL) ...
ODBC and ADO define four cursor types supported by Microsoft SQL Server. The DECLARE CURSOR statement has been extended; thus you can specify the four cursor types for Transact-SQL cursors. These cursors vary in their ability to detect changes to the result set and in the resources, such as...
Support the API cursor functions in OLE DB and ODBC. API server cursors are implemented on the server. Each time a client application calls an API cursor function, the SQL Server Native Client OLE DB provider or ODBC driver transmits the request to the server for action against the API serv...
为了提高性能, SQL Server可以异步填充大型键集和静态游标。可调用@@CURSOR_ROWS以确定当@@CURSOR_ROWS被调用时检索了游标符合条件的行数。语法【SELECT @@CURSOR_ROWS】,其中返回类型为integer数据类型。其返回值有四种如下图。 如果异步打开最后一个游标,@@CURSOR_ROWS 返回负数。 如果 sp_configure cursor ...
SQL Server populates the keyset of a large keyset-driven cursor asynchronously, which shortens the time between when the cursor is opened and when you can fetch the first rows. In This Section Expand table Topic Description About Choosing a Cursor Type Provides guidance on selecting an ...