sql CREATE PROCEDURE dbo.DoWhileLoop @n INT AS BEGIN DECLARE @i INT = 1 WHILE (@i <= @n) BEGIN PRINT @i SET @i = @i + 1 END END 这个存储过程包含了一个while循环,在每次循环中打印当前数字并递增。 3.调用存储过程 在存储过程被创建之后,我们可以使用EXECUTE语句或者简化的EXEC语句来调用它...
设置n的初值为1,一直不断进行1+2+3+到n大于等于100时,就循环结束。 While...Wend语句是可以执行和Do...Loop While语句和Do While...Loop语句相同的程序,他们相当于三胞胎,三者之间可以相互替换,并且最后实现效果都是相同。 结合学生系统中的判断班号是否重复问题:如下图...
I am not sure about DO-WHILE IN MS SQL Server 2008 but you can change your WHILE loop logic, so as to USE like DO-WHILE loop. Examples are taken from here: http://blog.sqlauthority.com/2007/10/24/sql-server-simple-example-of-while-loop-with-continue-and-break-keywords/ Example of ...
while loop do...while loop In the previous tutorial, we learned about for loop. In this tutorial, we will learn about while and do..while loop. while loop The syntax of the while loop is: while (testExpression) { // the body of the loop } How while loop works? The while loop ev...
The do/while loop is a variant of the while loop. This loop will execute the code block once, before checking if the condition is true, then it will repeat the loop as long as the condition is true.Syntax do { // code block to be executed } while (condition); ...
mysql sql 使用 while 报错 mysql while do 语句,mysql存储过程详解1. 存储过程简介我们常用的操作数据库语言SQL语句在执行的时候需要要先编译,然后执行,而存储过程(StoredProcedure)是一组为了完成特定功能的SQL语句集,经编译后存储在
没有，有while 语法：WHILE condition LOOP statements END LOOP;
WHILE DO dropprocedureifexistsp_while_do;createprocedurep_while_do()begindeclareiint;seti=1;whilei<=10doselectconcat('index :', i);seti=i+1;endwhile;end; call p_while_do(); FOR LOOP dropprocedureifexistsp_for_loop;createprocedurep_for_loop()begindeclareiint;seti=1; ...
loop '返回到循环的头部至于while和until只是个条件而已。do while 条件 表示当条件为true的时候开始循环,否则则跳出循环;loop while 条件 表示条件为true的时候才返回循环的头部,否则则跳出循环~until与while用法一样,只不过是条件为ture时跳出循环,在不用while和until的时候,注意在循环体里面添加跳出循环的语句,否则...
While e > 4 e -= 1 d += 1 End While 3>Do[{while | Until} condition] [statements] [Exit Do] [statements] Loop example: Do Until str = "Cool" System.Console.WriteLine("What to do?") str = System.Console.ReadLine() Loop