WebAug 19, 2024 · Write a program in PL/SQL to show the uses of SQL%NOTFOUND to determine if a UPDATE statement affected any rows. Sample Solution: PL/SQL Code: … Web显式游标在 PL/SQL 块的声明部分定义查询，该查询可以返回多行 显式游标，就是自己定义的游标 显式游标的使用： （1）游标变量的声明 cursor 游标名 is select语句; （指向集而并非第一条数据） cursor cur_emp is select * from emp; (2)打开游标 open 游标名称; open cur_emp;

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WebIn Oracle PL/SQL, the EXIT statement can be used to exit a loop early, before it completes its normal iteration. The EXIT statement can be used with a WHEN clause, which specifies a condition under which the loop should exit. The syntax for using the EXIT statement with a WHEN clause is as follows: EXIT [WHEN boolean_expression]; EXIT WHEN example WebJun 3, 2007 · The SQL%NOTFOUND attribute has a Boolean value that returns TRUE if no rows were affected by an INSERT, UPDATE, or DELETE statement, For example: BEGIN … iowa map of cities

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WebAug 19, 2024 · Sample Solution: PL/SQL Code: DROP TABLE emp_temp; CREATE TABLE emp_temp AS SELECT employee_id, first_name, last_name FROM employees; CREATE OR REPLACE PROCEDURE test_proc ( z_emp_id NUMBER ) AUTHID DEFINER AS BEGIN DELETE FROM emp_temp WHERE employee_id = z_emp_id; IF SQL% FOUND THEN DBMS_OUTPUT. Web我創建了這個觸發器一周但沒有編譯錯誤但是當我輸入一個記錄到EMP REPORT它會彈出一個錯誤信息說 adsbygoogle window.adsbygoogle .push 我無法弄清楚我哪里出錯了。 請幫助我 ： 請注意，我不能刪除約束和它的主鍵 WebIn this syntax: First, specify the name of the cursor after the CURSOR keyword. Second, define a query to fetch data after the IS keyword. Open a cursor Before start fetching rows from the cursor, you must open it. To … iowa maps free