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; --弱类型的...
(1)If CURSOR_SPACE_FOR_TIMEis set to false (the default), then a cursor can be deallocatedfromthe library cache regardless ofwhether application cursors associated with its SQL statement are this case, Oracle Database must verify that the cursor containing the SQLstatement is in the library ca...
SQL%ROWCOUNT 整型 代表DML语句成功执行的数据行数 SQL%FOUND 布尔型 值为TRUE代表插入、删除、更新或单行查询操作成功 SQL%NOTFOUND 布尔型 与SQL%FOUND属性返回值相反 SQL%ISOPEN 布尔型 DML执行过程中为真,结束后为假 【训练1】 使用隐式游标的属性,判断对雇员工资的修改是否成功。 步骤1:输入和运行以下程序:...
Hi, I have the below code, and I need to keep the result in the temp table. When I add Insert into temp table is extracting nothing while without it we have 7 records, and 7 records result is the correct result. Could you please help me what is
The name of the Transact-SQL server cursor defined.cursor_namemust conform to the rules for identifiers. INSENSITIVE Defines a cursor that makes a temporary copy of the data to be used by the cursor. All requests to the cursor are answered from this temporary table intempdb. Therefore, base...
Assume that you create a stored procedure that uses a cursor on a table variable in Microsoft SQL Server 2012 or SQL Server 2014. Additionally, the stored procedure updates the table by using a WHERE CURRENT OF statement together with the cursor. ...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source ...
than one instance of the cursor can be used in the same execution of the program. For example, assume a program is precompiled with the CONNECT(2) option and its DBRM is used to create a package at location X and a package at location Y. The program contains the following SQL ...
This enables Transact-SQL batches, stored procedures, and triggers to work with the output one row at a time. This also means that the procedure cannot be called directly from database API functions. The cursor output parameter must be bound to a program variable, but the database APIs do...
Server-Side Cursors and the SQLSRV Driver The following example shows the effect of the various cursors. On line 33 of the example, you see the first of three query statements that specify different cursors. Two of the query statements are commented. Each time you run the program, use a ...