Supporting different levels of visibility to changes made to the database data by other users that is presented in the result set. Note For a full description of the SQL Server cursor types, see Type of Cursors. The JDBC specification provides support for forward-only and scrollable cursors tha...
SQL Server unterstützt vier Cursortypen. Cursor können Arbeitstabellen verwendentempdb. Genau wie Aggregations- oder Sortiervorgänge, die überlaufen, entstehen diese E/A-Kosten und stellen einen potenziellen Leistungsengpässe dar.STATIC-Cursor verwenden von Beginn an Arbeitstabellen. Weite...
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...
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...
SQL 复制 CREATE OR REPLACE PACKAGE PackageName AS TYPE Ref_cursor IS REF CURSOR RETURN emp%ROWTYPE; FUNCTION func_name (choice INT) RETURN Ref_cursor; END PackageName; 函数定义为: SQL 复制 CREATE OR REPLACE FUNCTION func_name (choice in INT) RETURN PackageName.ref_cursor AS out_cursor...
Client-Side Cursors and the SQLSRV Driver See Also Download PHP driver The SQLSRV driver lets you create a result set with rows that you can access in any order, depending on the cursor type. This topic will discuss client-side (buffered) and server-side (unbuffered) cursors. ...
The cursor data type cannot be used for a column in a CREATE TABLE statement.See alsoCAST and CONVERT (Transact-SQL) CURSOR_STATUS (Transact-SQL) Data Type Conversion (Database Engine) Data Types (Transact-SQL) DECLARE CURSOR (Transact-SQL) DECLARE @local_variable (Transact-SQL) SET @local...
Gilt für: SQL Server Azure SQL-Datenbank Azure SQL Managed Instance SQL-Datenbank in Microsoft Fabric Definiert die Attribute eines Transact-SQL-Servercursors, wie z. B. dessen Scrollverhalten sowie die Abfrage, die zum Erstellen des Resultsets verwendet wird, in dem der Cursor ausgeführt wird...
SQL Server Azure SQL 資料庫 Azure Synapse Analytics Analytics Platform System (PDW) 編譯提交之數據指標語句或批次的計劃,然後建立並填入數據指標。sp_cursorprepexec結合 和sp_cursorprepare的sp_cursorexecute函式。 這個程式是藉由在表格式數據流 (TDS) 封包中指定ID = 5來叫用。
PL/SQL为所有的DML语句都自动声明了隐式游标,如 SELECT INTO语句、INSERT语句、DELETE语句和UPDATE语句。 2)显式游标: 是由用户声明和操作的游标。 3)Ref游标:type 游标类型名 is ref cursor [return 返回值类型] --强类型的游标类型:type strong_cursor_type is ref cursor return emp%rowtype; ...