The syntax of theWHILEstatement is as follows: WHILE expression DO Statements END WHILE TheWHILEloop checks the expression at the beginning of each iteration. If the expression evaluates toTRUE, MySQL will executes statements betweenWHILEandEND WHILEuntil the expression evaluates toFALSE. TheWHILEloop...
I try to run over a while loop while some value is not 0, but I get syntax errors. As far as I can tell my construction is similar as the manual describes: http://dev.mysql.com/doc/refman/5.5/en/while.html mysql> set @test = 2; ...
流程控制语句 循环---Loop...ITERATE---LEAVE loop;While...do;repeat...until #loop test 循环测试:loop;while;repeatDROP PROCEDURE IF EXISTS `syntax_loop`; DELIMITER // CREATE PROCEDURE syntax_loop(INOUT loop_param INT(4),INOUT while_param INT(4),INOUT repeat_param INT(4)) BEGIN /* loop...
其中,while do循环是一种常用的循环结构。然而,在使用while do循环时,有时候会遇到报错的情况。本文将深入探讨mysql while do报错的原因,并提供解决方案。 1. 报错信息解析 在使用while do循环时,可能会遇到如下的错误信息: ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that...
1、死循环学会用法 a = 1 while True: print(a) a +=1 2、无限次输入，直到输对，...
Error Code:1064You have an errorinyourSQLsyntax;check the manual that corresponds to your MySQL server versionforthe right syntax to use near''at line3Execution Time:0sec Transfer Time:0sec Total Time:0.001sec---Query:ENDError Code:1064 创建名为CountProc的存储过程,代码如下: 代码语言:javascrip...
2.条件语句 if 条件 thenstatementelsestatementend if; 3.循环语句(1).while循环 [label:] WHILE expression DOstatementsEND WHILE [label] ; (2).loop循环 [label:] LOOPstatementsEND LOOP [label]; (3).repeat until循环 [label:] REPEATstatementsUNTIL expressionEND REPEAT [label] ;...
CREATE PROCEDURE simple_loop(OUT counter INT) BEGIN SET counter = 0; my_simple_loop: LOOP SET counter = counter+1; IF counter = 10 THEN LEAVE my_simple_loop; END IF; END LOOP my_simple_loop; END$$ DELIMITER ; WHILE DO、END WHILE ...
[begin_label:] WHILE search_condition DO statement_list END WHILE [end_label] The statement list within a WHILE statement is repeated as long as the search_condition expression is true. statement_list consists of one or more SQL statements, each terminated by a semicolon (;) statement delimit...
WHILE loop The syntax of while loop is as follows: WHILE expression DO Statements END WHILE First the while loop checks the expression, if it is true it will executes statement until the expression become false. Because while loop checks the expression before statements executed, it is ...