Oracle中loop语句会先执行一次循环,然后再判断“exit when”关键字后面的条件表达式的值是true还是false,如果是true,那么将退出循环,否则继续循环. LOOP循环 语法如下loop plsql_sentence;exit when end_condition_expend loop;具体例子如下: declare i ; sum_i ; begin loop i :; sum_i:=i+sum_i; ; end loop; dbms_output.put_line('前
You are given an array of positive and negative integers. If a number n at an index is positive, then move forward n steps. Conversely, if it's negative (-n), move backward n steps. Assume the first element of the array is forward next to the last el
You are given a circular array nums of positive and negative integers. If a number k at an index is positive, then move forward k steps. Conversely, if it's negative (-k), move backward k steps. Since the array is circular, you may assume that the la
1,获取操作员姓名 SELECT SINGLE ADRP~NAME_TEXT INTO GS_OUTPUT-UNAMT FROM ADRP INNER JOIN USR21 ON ADRP~PERSNUMBER = USR21~PERSNUMBER WHERE USR21~BNAME = GS_OUTPUT-UNAME. 2,获取操作员邮箱地址 SELECT SINGLE ADR6~SMTP_ADDR INTO GS_OUTPUT-EMAIL FROM ADR6 INNER JOIN USR21
list comprehension 后面可以有多个for loops,每个for后面可以有if [(x, y, x * y)for x in(0,1,2,3)for y in(0,1,2,3)if x < y]等同于: for x in (0,1,2,3): for y in (0,1,2,3): if x < y: print (x, y, x*y) It also supports both “if" statements and referencing the outer i
pl/sql的控制结构if-then if-then-else if-then-elsif-else 案例1:编写一个过程,可以输入一个雇员名,如果该雇员的工资低于2000,就给该雇员工资增加10% create or replace procedure mypro(spName varchar2) is v_sal emp.sal%type begin select sal into v_sal from emp where ename = spName then update emp set
