... 当使用WITH/SELECT/WHEN时,必须对所有可能出现的条件给予考虑,使用关键字OTHERS,如果在某些条件出现时不需要进行任何操作,那应该使用UNAFFECTED。 块语句(BLOCK) 1. 进程(PROCESS) ...
基于204个网页-相关网页
...有九种: 1、并行信号赋值语句(Concurrent Signal Assignments) 2、进程语句(Process Statements) 3、块语句(Block Statements) 4、条件信号赋值语句(Selected Signal Assignments) 5、元件例化语句(Component Instantiations),其中包括类 属配臵语句。
基于48个网页-相关网页
数组类型的变量有三个重要的限制:数组长度固定不变,在编译时必须知道其长度,数组只在定义它的块语句内存在。
A variable of array type has three important limitations: Its size is fixed, the size must be known at compile time, and the array exists only until the end of the block in which it was defined.
但是您可能在想,语句块是什么意思呢。
查询编译器将视图定义展开成主语句块,从而产生一个更复杂的语句。
The query compiler expands view definitions into the main statement block, which might result in a more complex statement.
Another one might be "wait one second" which is another building block or puzzle piece and scratch.
另一条语句可能是“wait,one,second“,这条语句组成块或者片。
应用推荐