I am wondering if there are some query tools in IML?
Like MERGE in data step. LEFT JOIN in SQL .
Xia Keshan
Not really. Most data preparation is done outside of IML by using the DATA step or SQL. There is nothing in SAS/IML that matches their power and convenience.
You can, of course, use the LOC function, in conjunction with subscripting and concatenation, to match and merge rows of matrices. The UNIQUE-LOC technique is often used to combine data by matching categories. The EXPANDGRID function is a kind of joining operation, since it is a Cartesian product operation.
Thanks . Rick .
Join us for SAS Innovate April 16-19 at the Aria in Las Vegas. Bring the team and save big with our group pricing for a limited time only.
Pre-conference courses and tutorials are filling up fast and are always a sellout. Register today to reserve your seat.
Learn how to run multiple linear regression models with and without interactions, presented by SAS user Alex Chaplin.
Find more tutorials on the SAS Users YouTube channel.