Oracle-procedure解读 procedure概述 存储过程( Stored Procedure )是一组为了完成特定功能的 SQL 语句集,经编译后存储在数据库中。 用户通过指定存储过程的名字并给出参数(如果该存储过程带有参数)来执行它。 存储过程是由流控制和 SQL 语句书写的过程,这个过程经编译和优化后存储在数据库服务器中,应用程序使用时只要...
A cursor in SQL is a database object stored in temp memory and used to work with datasets. You can use cursors to manipulate data in a database, one row at a time. A cursor uses a SQL SELECT statement to fetch a rowset from a database and then can read and manipulate one row at...
(1)Java StoredProcedure 中定义in,out参数的顺序要与SP sql中定义的in,out参数顺序一致 declareParameter(new SqlOutParameter(“return_sql”, OracleTypes.VARCHAR)); declareParameter(new SqlParameter(“V_SOEID”,OracleTypes.VARCHAR)); declareParameter(new SqlParameter(“V_IOIID”, OracleTypes.VARCHAR))...
Ref光标正好相反,可以动态地打开,或者利用一组SQL静态语句来打开,选择哪种方法由逻辑确定(一个IF/THEN/ELSE代码块将打开一个或其它的查询)。例如,下面的代码块显示一个典型的静态SQL光标,光标C。此外,还显示了如何通过使用动态SQL或静态SQL来用ref光标(在本例中为L_CURSOR)来打开一个查询: Declare type rc is ...
SQL Server 2012 Service Pack 3SQL Server 2014 Developer - duplicate (do not use)SQL Server 2014 Enterprise - duplicate (do not use)SQL Server 2014 Standard - duplicate (do not use) Symptoms Assume that you create a stored procedure that uses a cursor on a table variable in Microsoft SQL ...
beginforrecin(selectgsmno,statusfromgsm_resource) loop dbms_output.put_line(rec.gsmno||'--'||rec.status);endloop;end;/ 三、REFcursor Ref cursor属于动态cursor(直到运行时才知道这条查询)。 从技术上讲,在最基本的层次静态cursor和ref cursor是相同的。一个典型的PL/SQL光标按定义是静态的。Ref光标正...
This example demonstrates the use ofsp_cursorprepexec. It runs a query against thePersontable in theAdventureWorks2022database returning all records where first name is "Katherine". SQL USEAdventureWorks2022; GODECLARE@prep_handleINT, @cursorINT, @scrolloptINT=4104, @ccoptINT=8193, @...
However, if you also use the FOR UPDATE OF clause, specify OPTION (<query_hint>) after FOR UPDATE OF. SQL Server implicitly converts the cursor to another type if clauses in select_statement conflict with the functionality of the requested cursor type. FOR UPDATE [ OF column_n...
I started implementing this code with stored procedure alone. However I see that I am not able to check the conditions row-wise and insert\update based on condition when I use only stored procedure. I am thinking of using cursor in a stored procedure to apply the logic...
However, if you also use the FOR UPDATE OF clause, specify OPTION (<query_hint>) after FOR UPDATE OF. SQL Server implicitly converts the cursor to another type if clauses in select_statement conflict with the functionality of the requested cursor type. FOR UPDATE [ OF column_name [ ,.....