我有一个宏,我正在传递6个表名和6列。但是,列和表的数量并不总是恒定的。SAS中宏的参数可变数量?
有没有一种方法来有一个可变数量的参数?我用** kwargs熟悉python中的概念。
此外,有没有一种方法来参数化proc sql语句只采取尽可能多的col和表输入?或者在SAS中尝试捕获某种类型的变量以检查在运行sql语句之前变量是否存在?
这是我想要参数化的宏。
%macro Generate_TP_tbl(new_tbl_name, trans_col, tbl_1, tbl_2, tbl_3, tbl_4,
tbl_5, tbl_6, col_1, col_2, col_3, col_4, col_5, col_6);
proc sql;
CREATE TABLE &new_tbl_name AS
SELECT a1._NAME_, a1.&trans_col as &col_1, a2.&trans_col as &col_2,
a3.&trans_col as &col_3, a4.&trans_col as &col_4, a5.&trans_col as &col_5,
a6.&trans_col as &col_6
FROM &tbl_1 as a1, &tbl_2 as a2, &tbl_3 as a3, &tbl_4 as a4, &tbl_5 as a5,
&tbl_6 as a6
WHERE a1._NAME_ = a2._NAME_ = a3._NAME_ = a4._NAME_ = a5._NAME_ = a6._NAME_;
run;
%mend Generate_TP_table;
在列表中使用空格而不是逗号。那么你只需要一个或两个参数。 – Tom