资讯

As a beginner in Python programming, it is important to understand variables and data types, as they are the building blocks of any program. In this article, we will provide a comprehensive guide ...
The variable in the RANGE statement, the ID variables, and the BY variables are available for the model program to examine, but their values should not be changed by the program.
Initialize nonretained program variables (including selector variables) to 0 (or missing if the INITMISS option is specified). Selector variables are temporarily associated with a numeric data item ...
By using the NEW_VALUE parameter, you can make your SQL*Plus script behave like a real programming language, storing and addressing program variables, just like in PL/SQL.