the dynamic PL/SQL block is an anonymous PL/SQL block that invokes a subprogram that has a formal parameter of the PL/SQL (but not SQL) data type RECORD. The record type is declared in a package specification, and the subprogram is declared in the package specification and defined in the...
This chapter shows you how to use dynamic SQL, an advanced programming technique that adds flexibility and functionality to your applications. After weighing the advantages and disadvantages of dynamic SQL, you learn four methods--from simple to complex--for writing programs that accept and process ...
This example illustrates how you can create and use dynamic cursor in Oracle PL/SQL. The example is pretty simple, but I hope you can get the idea and apply it to more complicated cases. DECLARE t_cursorISREF CURSOR; my_cursor t_cursor; v_customer RECORD(customer_id NUMBER(18),amount ...
静态SQL: 在PL/SQL块中使用的SQL语句在编译时是明确的,执行的是确定对象。 动态SQL: 在PL/SQL块编译时SQL语句是不确定的,如根据用户输入的参数的不同而执行不同的操作。 1、跟据动态条件获得数据集 /*定义游标*/ TYPE App_CUR IS REF CURSOR; /*定义存储过程*/ PROCEDURE sp_QueryAppName(p_where1 VARC...
* Dynamic SQL statement... MOVE 'DELETE FROM EMP WHERE DEPTNO = 30' TO STMT. However, most dynamic SQL statements contain select-list items or place-holders for bind variables, as shown in the following UPDATE statement: * Dynamic SQL statement with place-holders... MOVE 'UPDATE EMP ...
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Examples Execute a SQL SELECT query with the table name as a dynamic variable using bind variables. This query returns the number of employees under a manager with a specific ID. DO $$DECLARE Tabname varchar(30) := 'employees'; num integer := 1; cnt integer; BEGIN EXECUTE ...
Ever since Oracle Version 7.1, we PL/SQL developers have been able to use the built-in DBMS_SQL package to execute dynamic SQL. In Oracle8i, we were given a second option ... GetOracle PL/SQL Programming, Third Editionnow with the O’Reillylearning platform. ...
允许值包括:None(默认值)、PhysicalPartitionsOfTable和DynamicRange。 启用分区选项(即,该选项不为None)时,用于从 Oracle 数据库并行加载数据的并行度由复制活动上的parallelCopies设置控制。否 partitionSettings指定数据分区的设置组。 当分区选项不是None时适用。否 ...
Dapper Elapsed: 00:00:00.6818111; Query Entity Counts: 131072; ORM: FreeSql* Elapsed: 00:00:00.6060042; Query Tuple Counts: 131072; ORM: FreeSql* Elapsed: 00:00:00.4211323; Query ToList<Tuple> Counts: 131072; ORM: FreeSql* Elapsed: 00:00:01.0236285; Query Dynamic Counts: 131072; ORM: Fre...