Substrn in sas

If you do not specify lengththe SUBSTRN function returns the substring that extends from the position that you specify to the end of the string. ABS Function.

Returns a substring, allowing a result with a length of zero. Date, Time, and Datetime Constants. Function Categories. Client Authentication Using an Authinfo File. Example Data Sets. SAS Visual Analytics.

Substrn in sas

This tutorial explains how to extract last N characters or digits of a variable in SAS, along with examples. Suppose you have a product ID in which last 4 characters refers to a product category so you are asked to pull product category information. In this case, it is 10 characters long. See the image below. In order to make it run for numeric variables, we first need to convert numeric variables to character variables with PUT function. In this process, we first calculate the logarithm base 10 of the number , which gives us a result of 3. Then, by using the INT function, we extract the integer part of the logarithm, resulting in 3. Finally, by adding 1 to the integer part, we determine that the number has 4 digits. Deepanshu founded ListenData with a simple objective - Make analytics easy to understand and follow. He has over 10 years of experience in data science.

SAS 9.

But more interestingly it has got another important use as well. When we use it on the Left side of assignment statement it can be used to replace the part of string in main string. So when used on Right side its extracting part of string and when used on left side it can used for replacing the part of string in original string. This has been demonstrated below;. SAS Code:. If we see the code more closely;.

But apart from extracting parts of a string, it has another important use. The part begins with the character you specify in the start-position argument and the number of characters you specify in length. If the length of the returned variable is not defined, it is assigned with the length of the first argument. Note: The length of the resulting variable will be the length of the character value if the length is not previously assigned. The code below turns this inconsistent data into a useful text message. But what if we needed to specify the position second argument that will start extracting input relative to the end rather than the beginning of the string?

Substrn in sas

If you do not specify length , the SUBSTRN function returns the substring that extends from the position that you specify to the end of the string. ABS Function. ADDR Function. AIRY Function. ATAN Function. ATAN2 Function.

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BETA Function. FUZZ Function. CAT Function. And we can observe the output to be blank; in addition to following NOTE being displayed in the log. SQRT Function. CATT Function. Required Arguments string specifies a character or numeric constant, variable, or expression. Next page. Project Management JumpStart. YEAR Function. Arguments expression specifies any valid expression that evaluates to a character string or numeric value. CEIL Function. If the length that you specify extends beyond the end of the string, the result is truncated at the end so that the last character of the result is the last character of the string. STD Function.

It can also be used to replace very specific given characters from a string.

YYQ Function. PEEK Function. Leading and trailing blanks are removed, and no message is sent to the SAS log. FCOL Function. HOUR Function. SIN Function. This is an optional argument. PUT Function. Use of length function inside substr function was useful. CHAR Function. IPMT Function. In total it returns last 4 characters. CATS Function.