IBM MainFrame Question:

How can we increment subscript and index?

SUBCRIPT:
CAN BE INCREMENT OR DECREMENT USING ARITHMETIC OPERATIONS
INDEX:
CAN BE INCREMENT OR DECREMENT USING SET VERB

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Suppose I have two tables A and B. Both tables are connected with SSN number as foreign key. I want to retrieve a column data from B table. How will you write a query?	We have an output dataset in job with disp parameter as SHR. Can we write data in that file dataset?