SAS - 使用 put() 和 input() 轉換資料型別
阿新 • • 發佈：2022-03-18
使用 input () 還是 put() 轉換變數資料型別取決於 source data type 和 target data type。對於 input() 和 put()，有四條原則：
- PUT() always creates character variables
- INPUT() can create character or numeric variables based on the informat
- The source format must match the source variable type in PUT()
- The source variable type for INPUT() must always be character variables
EXAMPLE :
| Convert Raw to Returned | Function Call | Raw Type | Raw Value |
Returned Type |
Returned Value |
|
character variable to another character variable |
A PUT(name, $10.); | char, char format | ‘Richard’ | char always | ‘Richard ’ |
| numeric variable to character variable with numeric value | B PUT(age, 4.); |
num, num format | 30 | char always | ‘ 30’ |
| character variable to another character variable with a user defined format | C PUT(name, $nickname.); | char, char format | ‘Richard’ | char always | ‘Rick’ |
| character variable with numeric value and informat to a numeric variable | D INPUT(agechar, 4.); | char always | ‘30’ |
num, num informat | 30 |
| character variable with numeric value and informat to a character variable | E INPUT(agechar, $4.); | char always | ‘30’ | char, char informat | ‘ 30’ |
| character variable with numeric value and informat to a numeric variable | F INPUT(cost,comma7.); | char always | ‘100,541’ | num, num informat | 100541 |