In order to specify the command that the new task should run, enter multiple SQL statements separated by semicolons or a user-defined function here which is executed at every task run time.
为了指定新任务应该运行的命令，在这里输入在每次运行任务时执行的多个sql语句(以分号分隔)或一个用户定义函数。
Once a function is defined, you can invoke it by following the function's name with an optional comma-separated list of arguments within parentheses.
一旦定义了函数，只需要在函数名后边加上一个可选的、用逗号分隔的参数列表(该列表用括号括起来)，就可以调用它。
To access one of the functions, you have to specify the name of the module and the name of the function, separated by a dot (also known as a period). This format is called dot notation.
指定模块名和函数名，要用点(也就是英文的句号)来连接模块名和函数名，就可以调用指定的函数了。
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