摘要: The APPEND procedure adds the observations from one SAS data set to the end of another SAS data set.[阅读全文:]
摘要: Subscripted variables can be used to easily read groups of values in the input statement. The followi[阅读全文:]
摘要: Symbol statements (symbol, symbol1,..., symbol255) are used to control some of the behavior of the pl[阅读全文:]
摘要: Up to 10 title lines can be placed on printouts generated by SAS by using title statements. Each titl[阅读全文:]
摘要: To correct errors in large data sets the update statement can be used: data new; update old changes;[阅读全文:]
摘要: The where statement can be used with any procedure to restrict the action of that procedure to observ[阅读全文:]
摘要: The X command can be used to execute operating system commands without leaving SAS. The form is X 'o[阅读全文:]
摘要: The SAS array statement is used to easily tag variables in a data set for processing. The array state[阅读全文:]
摘要: The @ symbol at the end of an input statement in the data step tells SAS that not to move to the next[阅读全文:]
摘要: Used in conjunction with a SAS procedure, the by statement specifies variables in the data set which[阅读全文:]
