PL/SQL程序有3种模式:IN (default),IN OUT,OUT (1)、IN 模式参数是一个常量 IN模式参数是一个常量必须被看作常量。下面的过程将不能编译成功以为第3行是一个IN模式变量 PROCEDURE print_next_value(v_data IN INTEGER) IS BEGIN v_data := v_data+1; -- compile error dbms_
The return type of the function is VARCHAR which is declared in line no 2. The function returns the 'emp_name' which is of type VARCHAR as the return value in line no 9. How to execute a PL/SQL Function? A function can be executed in the following ways. 1) Since a function return...
By using IN OUT parameter we can pass values into a parameter and return a value to the calling program using the same parameter. But this is possible only if the value passed to the procedure and output value have a same datatype. This parameter is used if the value of the parameter w...
[(parameter_name [IN | OUT | IN OUT] type [, ...])] RETURN return_datatype {IS | AS} BEGIN < function_body > END [function_name]; 1. 2. 3. 4. 5. 6. 7. 以下示例说明了如何创建和调用独立函数。此函数返回customers表中CUSTOMERS的总数。 无涯教程将使用在PL/SQL变量一章中创建的CUS...
[Chapter 1] 1.15 Calling PL/SQL Functions in SQLSteven FeuersteinBill Pribyl &Chip Dawes
This Oracle tutorial explains how to create and drop functions in Oracle/PLSQL with syntax and examples.Create Function Just as you can in other languages, you can create your own functions in Oracle. Syntax The syntax to create a function in Oracle is: CREATE [OR REPLACE] FUNCTION function...
Oracle/PLSQL: Creating Functions In Oracle, you can create your own functions. The syntax for a function is: CREATE [OR REPLACE] FUNCTION function_name [ (parameter [,parameter]) ] RETURN return_datatype IS | AS [declaration_section]
We will use the CUSTOMERS table, which we had created in the PL/SQL Variables chapter −Select * from customers; +---+---+---+---+---+ | ID | NAME | AGE | ADDRESS | SALARY | +---+---+---+---+---+ | 1 | Ramesh | 32 | Ahmedabad | 2000.00 | | 2 | Khilan |...
flush_privileges.sql: 权限刷新脚本,将兼容性对象的使用权限授予全部用户 uninstall.sql: 卸载脚本,用于移除 compat-tools 创建的一系列兼容性相关对象 Oracle_Views.sql: Oracle数据库兼容性数据字典及视图 Oracle_Functions.sql: Oracle数据库兼容性函数
An alternative method may be used to create a function in PL/R, if certain criteria are met. First, the function must be a simple call to an existing R function. Second, the function name used for the PL/R function must match that of the R function exactly. If these two criteria are...