postgres$# BEGIN postgres$# RAISE EXCEPTION 'Nonexistent ID --> %', user_id postgres$# USING HINT = 'Please check your user ID'; postgres$# END; postgres$# $g$; ERROR: Nonexistent ID --> 100 HINT: Please check your user ID CONTEXT: PL/pgSQL function inline_code_block line 5 at...
SELECT*FROMcustomersWHEREcustomer_id =100;Code language:SQL (Structured Query Language)(sql) Here is the output: In this tutorial, you have learned how to use the PL/SQLRAISEstatement to explicitly raise a user-defined exception, an internally defined exception, and re-raising an exception. ...
When exception2 then Sequence of statements; When others then 3、异常的抛出 由三种方式抛出异常 1. 通过PL/SQL运行时引擎 2. 使用RAISE语句 3. 调用RAISE_APPLICATION_ERROR存储过程 当数据库或PL/SQL在运行时发生错误时,一个异常被PL/SQL运行时引擎自动抛出。异常也可以通过RAISE语句抛出 RAISE exception_name...
When exception2 then Sequence of statements; When others then 3、异常的抛出 由三种方式抛出异常 1. 通过PL/SQL运行时引擎 2. 使用RAISE语句 3. 调用RAISE_APPLICATION_ERROR存储过程 当数据库或PL/SQL在运行时发生错误时,一个异常被PL/SQL运行时引擎自动抛出。异常也可以通过RAISE语句抛出 RAISE exception_name...
plsql raise PL/SQL is a procedural language extension for SQL in Oracle databases. It allows developers to write powerful and complex database applications by combining SQL statements with procedural constructs like loops, conditionals, and exception handling. Oneimportant feature of PL/SQL is the ...
e_sal_error是已经定义好的异常（e_sal_error exception;这句） raise e_sal_error就是抛出名字为e_sal_error的异常。抛出
1、在PL/SQL块的定义部分定义异常情况; 2、RAISE <异常情况>; 3、在PL/SQL块的异常情况处理部分对异常情况做出相应的处理。 DECLAREv_empno employees.employee_id%TYPE:=&empno;no_result EXCEPTION;--1、定义BEGINUPDATEemployeesSETsalary=salary+100WHEREemployee_id=v_empno;IFSQL%NOTFOUNDTHENRAISE no_result...
CREATE OR REPLACE PROCEDURE raise_demo (inval NUMBER) IS evenno EXCEPTION; oddno EXCEPTION; BEGIN IF MOD(inval, 2) = 1 THEN RAISE oddno; ELSE RAISE evenno; END IF; EXCEPTION WHEN evenno THEN dbms_output.put_line(TO_CHAR(inval) || ' is even'); WHEN oddno THEN dbms_output.put_li...
The following example shows a procedure that raises an exception ofoddnoorevennobased on the value provided as argument in the invocation:: CREATE OR REPLACE PROCEDURE raise_demo (inval NUMBER) IS evenno EXCEPTION; oddno EXCEPTION; BEGIN
当数据库或PL/SQL在运⾏时发⽣错误时，⼀个异常被PL/SQL运⾏时引擎⾃动抛出。异常也可以通过RAISE语句抛出RAISE exception_name;显式抛出异常是程序员处理声明的异常的习惯⽤法，但RAISE不限于声明了的异常，它可以抛出任何任何异常。例如，你希望⽤TIMEOUT_ON_RESOURCE错误检测新的运⾏时异常处理器，...