FOR loop_counter IN [REVERSE] lowest_number..highest_number LOOP {.statements.} END LOOP; You would use a FOR Loop when you want to execute the loop body a fixed number of times. 译:当你需循环体执行一定的次数的时候,就可以使用FOR Loop。 Let's take a look at an example. FOR Lcntr ...
A) Simple PL/SQL FOR LOOP example In this example, the loopindexisl_counter,lower_boundis one, andupper_boundis five. The loop shows a list of integers from 1 to 5. BEGINFORl_counterIN1..5LOOPDBMS_OUTPUT.PUT_LINE( l_counter );ENDLOOP;END;Code language:SQL (Structured Query Language...
The syntax for the FOR Loop is: FOR loop_counter IN [REVERSE] lowest_number..highest_number LOOP {.statements.} END LOOP; You would use a FOR Loop when you want to execute the loop body a fixed number of times. Let's take a look at an example. FOR Lcntr IN 1..20 LOOP L...
FOR employee_rec in c1 LOOP total_val := total_val + employee_rec.monthly_income; END LOOP; RETURN total_val; END; In this example, we've created a cursor called c1. TheCURSOR FOR Loopwill terminate after all records have been fetched from the cursor c1. 译:在这个示例中,我们建立了...
1) PL/SQL cursor FOR LOOP example The following example declares an explicit cursor and uses it in the cursorFOR LOOPstatement. DECLARECURSORc_productISSELECTproduct_name, list_priceFROMproductsORDERBYlist_priceDESC;BEGINFORr_productINc_productLOOPdbms_output.put_line( r_product.product_name ||'...
在Oracle中,可以使用FOR循环实现循环编程。需要声明一个计数器变量,然后使用FOR关键字开始循环,设置循环的起始值、结束值和步长。在循环体内编写需要执行的代码,最后使用END LOOP结束循环。 在Oracle中,我们可以使用PL/SQL语言来实现循环编程,PL/SQL是Oracle数据库的过程式语言,它允许我们编写存储过程、函数和触发器等,...
Oracle PL/SQL中的for循环语法如下: FOR loop_counter IN [REVERSE] lower_bound..upper_bound LOOP -- Loop statements END LOOP; 复制代码 其中,loop_counter是循环计数器变量,lower_bound是循环的起始值,upper_bound是循环的结束值。循环会从lower_bound开始逐步增加或减少至upper_bound,直到达到结束条件为止。
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[oracle]pl/sql --循环语句demo --循环语句 有三种结构 loop while for --使用的表users Name Type Nullable Default Comments --- --- --- --- --- ID NUMBER(4) Y NAME VARCHAR2(29) Y 1. 2. 3. 4. --loop循环 要以end loop结束...
FOR I IN 1..100 LOOP DBMS_OUTPUT.put_line(I); SELECT DBMS_RANDOM.value(1, 100) INTO V_AGE FROM DUAL; V_NAME := 'FOR_' || V_AGE; INSERT INTO TB_USER(USER_NAME, USER_AGE) VALUES (V_NAME, V_AGE); END LOOP; COMMIT; ...