This example demonstrates how to define and open a REF CURSOR variable, and then pass it as a procedure parameter. The cursor variable is specified as an IN OUT parameter so that the result set is made available to the caller of the procedure: CREATE OR REPLACE PROCEDURE emp_by_job ( p_...
存储子程序是被命名的PL/SQL块,以编译的形式存储在数据库服务器中,可以在应用程序中进行调用,是PL/SQL程序模块化的一种体现。 PL/SQL中的存储子程序包括存储过程和(存储)函数两种。 存储子程序是以独立对象的形式存储在数据库服务器中,因此是一种全局结构,与之对应的是局部子程序,即嵌套在PL/SQL块中的局部过程...
Example 创建存储过程,输出系统的日期和时间CREATE OR REPLACE PROCEDURE display_time IS BEGIN dbms_output.put_line(systimestamp); END display_time;使用三种方式调用上面创建的存储过程方式一:使用sqlplus命令EXECUTE(简写EXEC) 调用EXECUTE display_time;方式二:使用sql命令CALL调用CALL display_time( );方式三:在...
For example, 123 is an integer literal and 'abc' is a character literal, but 1+2 is not a literal. PL/SQL literals include all SQL literals (described in Oracle Database SQL Language Reference) and BOOLEAN literals (which SQL does not have). A BOOLEAN literal is the predefined logical...
PostgreSQL 存储过程数据参数 plsql存储过程 oracle 提供可以把 PL/SQL 程序存储在数据库中,并可以在任何地方来运行它。这样就叫储存过程和函数。过程和函数统称为 PL/SQL 子程序,他们是被命名的 PL/SQL块,均存储在数据库中,并通过输入、输出参数或输入/输出参数与其调用者交换信息。过程和函数的唯一区别是函数总...
Let us see another example. Code implementation with IN OUT parameter: DECLARE num number; PROCEDURE addNum(i IN OUT number) IS BEGIN i := i + i; END; BEGIN num := 1; addNum(num); dbms_output.put_line('The sum is ' || num); ...
To work with PL/SQL warning messages, you use thePLSQL_WARNINGSinitialization parameter, theDBMS_WARNINGpackage, and theUSER/DBA/ALL_PLSQL_OBJECT_SETTINGSviews. PL/SQL Warning Categories PL/SQL warning messages are divided into categories, so that you can suppress or display groups of similar wa...
The assignment statement sets a previously-declared variable or formal OUT or IN OUT parameter to the value of an expression.
SQL statements and expressions within a PL/pgSQL function can refer to variables and parameters of the function. But parameters will only be substituted in places where a parameter or column reference is syntactically allowed. As an extreme case, consider this example of poor programming style: ...
Problem:Error calling a PL/SQL procedure with one in/out parameter of type LONGError:ORA-06502: PL/SQL: numeric or value error ORA-06512: at "procedure_name", line119 ORA-06502: PL/SQL: numeric or value error: character string buffer toosmall ORA-06512: at line 1...