This code is written in SAS and uses the SQL...

This code is written in SAS and uses the SQL Procedure (proc sql) to perform the following actions:

1. Extracts a Substring: The substr(ar_id,10,12) function extracts a substring from the ar_id column. It starts at the 10th character in the string and extracts 12 characters.

2. Renames the Substring: The resulting substring is given the alias ar_id in the output.

3. Creates a Macro Variable: The into :dup_recov_1 separated by "," clause places the resulting values from the select statement into a SAS macro variable named dup_recov_1.

4. Concatenates Values with a Comma: If there are multiple values resulting from the query, they are concatenated into a single string, separated by commas.

5. Reads Data from a Table: The results are retrieved from the recov_dup_exp dataset located in the temp library.

Summary:

• The code processes data from the temp.recov_dup_exp dataset.
• It extracts a 12-character substring starting from the 10th character of the ar_id column, concatenates these substrings with commas, and stores the result in the macro variable dup_recov_1.