IN OUT - The parameter can be referenced by the procedure or function and the value of the parameter can be overwritten by the procedure or function. The following is a simple example of a function: CREATE OR REPLACE Function FindCourse ( name_in IN varchar2 ) RETURN number IS cnumber nu...
subprogram bodies :定义公有和私有的PL/SQL子程序。创建包体 CREATE OR REPLACE PACKAGE BODY comm_package ISFUNCTION validate_comm (p_comm IN NUMBER) RETURN BOOLEAN (包中创建函数) IS v_max_comm NUMBER; BEGIN SELECT MAX(comm) INTO v_max_comm FROM emp; IF p_comm > v_max_comm THEN RETURN(...
subprogram bodies :定义公有和私有的PL/SQL子程序。 创建包体 CREATE OR REPLACE PACKAGE BODY comm_package IS FUNCTION validate_comm (p_comm IN NUMBER) RETURN BOOLEAN (包中创建函数) IS v_max_comm NUMBER; BEGIN SELECT MAX(comm) INTO v_max_comm FROM emp; IF p_comm > v_max_comm THEN RETUR...
(1)A subprogram is a PL/SQLblock that is stored in the database and can be called by name from anapplication. When you create a subprogram, the database parses the subprogramand stores its parsed representation in the database. You can declare asubprogram as a procedure or a function. ...
在Oracle PL/SQL中,CASE表达式(CASE Expression)是一个非常强大且常用的工具,可以用于在SQL或PL/SQL中执行基于条件的操作。CASE表达式类似于IF-THEN-ELSE语句,但使用起来更加灵活,易于阅读和编写。 CASE表达式包含两种形式,一种是简单形式,一种是搜索形式。 下面将分别介绍这两种形式的写法、语法以及使用方法。
Oracle - FUNCTION getFunction ( dbId IN NUMBER) RETURN NUMBER IS <Function Body> MySQL - CREATE FUNCTION getFunction ( dbId IN INT) RETURNS INT RETURN <Function Body> 10) Replace functions as follows Oracle => MySQL --- NVL() => IFNULL() Find RegEx - NVL\((...
"CREATE FUNCTION Statement"for more information about the syntax and semantics "SQL_MACRO Clause"syntax and semantics Changes in Oracle Database Release 18c For Oracle Database 18c, Oracle Database PL/SQL Language Reference documents these new features. ...
This function creates a cell reference string from given column and row indices (1-based). For example, makeCellRef(54,8) will return 'BB8'.function makeCellRef ( p_colIdx in pls_integer , p_rowIdx in pls_integer ) return varchar2;...
Name of the PL/SQL stored procedure that the activity calls. Also, the PL/SQL stored procedure that a function activity calls must comply with a specific API. See:Standard API for PL/SQL Procedures Called by Function Activities. You can view the scripts that create theWF_REQDEMOstored proced...
The first is theWM_CONCATbuilt-in function. This is not supported by Oracle any more and is not documented, so I suggest avoiding it. Alternatively, you can create ageneric user-defined aggregate function, that does the work for you, in PL/SQL. This has been detailed in anAskTom article...