In this example, the dynamic PL/SQL block is an anonymous PL/SQL block that invokes a subprogram that has a formal parameter of the PL/SQL data type BOOLEAN. CREATEORREPLACEPROCEDUREsp_test_boolean(xBOOLEAN)AUT
[Chapter 4] Native Dynamic SQL in Oracle8iSteven Feuerstein
I'm trying to use dynamic sql to grant or revoke roles to a user account in an Oracle 12c database. I tried various things, eventually working up to the following code to try three methods of dynamic SQL. The three methods are DBMS_SQL, bind variables and concatenated statement methods. ...
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 ...
This method lets your program accept or build a dynamic SQL statement, then process it using descriptors (discussed in"Using Oracle Method 4"). The number of select-list items, the number of place-holders for input host variables, and the datatypes of the input host variables can be unknown...
Typically, an application program prompts the user for the text of a SQL statement and the values of host variables used in the statement. Oracle then parses the SQL statement to ensure it meets syntax rules.Next, Oracle binds the host variables to the SQL statement. That is, Oracle gets ...
在上面的示例中,动态SQL语句是根据变量dept_id的值构建的,并且使用USING子句将变量的值传递给SQL语句。 使用DBMS_SQL包:DBMS_SQL是Oracle提供的一个包,用于在PL/SQL中执行动态SQL语句。以下是一个使用DBMS_SQL包的示例: 代码语言:txt 复制 DECLARE cur_id INTEGER; sql_stmt VARCHAR2(200); result NUMBER; BEG...
Notice that in this case we’re overriding a suffix, while we’re still appending a prefix. foreach Another common necessity for dynamic SQL is the need to iterate(['ɪtəreɪt] ) over a collection, often to build an IN condition. For example: ...
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 ... Get Oracle PL/SQL Programming, Third Edition now with the O’Reilly learning platform. O’Reilly members experie...
其使用内部 Oracle 日期和时间戳记数据类型来与数据库交换数据,因此不涉及与字符数据的转换。 在将用户定义的 SQL 语句中带有 TO_CHAR 和 TO_DATE 函数的 Dynamic Plug-in 阶段迁移到 DRS Connector 阶段时,作业可能由于此差别而失败。对于包含自动生成的 SQL 语句的迁移阶段,则不会出现此问题,因为 DRS Co...