在LOOP语句内部使用IF-THEN语法判断condition条件是否成立,如果成立,则执行EXIT退出循环,此时程序执行流程就会跳转到statement 3 中。 3.使用EXTI-WHEN退出循环 PL/SQL提供了EXIT WHEN语句来终止一个循环,该语句与EXIT的不同在于可以在WHEN关键字的后面指定一个循环执行的条件,通常是一个比较表达式或者是一个函数或变量...
结合range()和len()函数以遍历一个序列的索引: a = ['python', 'sql', 'linux', 'Jenkins', 'jmeter']for i in range(len(a)): print(i, a[i]) 1. 也可以使用range指定区间的值: for i in range(2,8) : print(i) 1. 也可以使range以指定数字开始并指定不同的增量: for i in range(0...
SQL While循环是一种迭代结构,它允许在满足特定条件的情况下重复执行一段代码块。在SQL中,可以使用WHILE关键字来定义While循环。 确定需要排除的数据库条目的条件。根据具体需求,确定需要排除的数据库条目的条件,例如某个字段的特定值或满足一定条件的数据。 使用SQL语句查询数据库并排除符合条件的条目。根据确定的...
The statements are executed repeatedly as long as the specified condition is true. The execution of statements in the WHILE loop can be controlled from inside the loop with the BREAK and CONTINUE keywords.Transact-SQL syntax conventionsSyntaxSyntax for SQL Server, Azure SQL Database, Azure SQL ...
while condition: # 执行SQL语句 cursor.execute("SQL语句") # 获取结果 result = cursor.fetchall() # 对结果进行处理 for row in result: # 处理每一行数据 其中,condition是循环的条件,可以根据实际需求进行设置。在循环中,先执行SQL语句并获取结果,然后对结果进行处理,可以使用fetchall()方法获取所有结果集,...
while(condition) { // Code to be executed } 让我们将其应用于现实生活中的场景,例如在自动清洁机器人中: int batteryLife = 100; // battery life on a scale of 0-100 while(batteryLife > 0) { Console.WriteLine($"Cleaning in progress. Battery life: {batteryLife}%"); batteryLife -= 10;...
SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric SQL database in Microsoft Fabric Sets a condition for the repeated execution of a SQL statement or statement block....
In the following example we’ve altered the WHILE loop to use the BREAK command (colored green). There are two changes: The WHILE condition always evaluates to TRUE, as @n is always greater than or equal to zero. The IF ELSE tests for the end condition, and when TRUE, executes BREAK....
Transactions (Transact-SQL) TRY...CATCH (Transact-SQL) TRIGGER_NESTLEVEL (Transact-SQL) TRUNCATE TABLE (Transact-SQL) TYPE_ID (Transact-SQL) TYPE_NAME (Transact-SQL) TYPEPROPERTY (Transact-SQL) UNICODE (Transact-SQL) UNION (Transact-SQL) ...
library!ReportServer_0-2!22b8!date time:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.ReportServerStorageException: , An error occurred within the report server database. This m...