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airchang
‎11-08-2016
  • 5 Posts
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Re: Iterate over hash key

by Calcite | Level 5 in SAS Procedures
‎10-30-2016 03:23 PM
‎10-30-2016 03:23 PM
Hi That's very helpful. But what does the line "if 0 then set want_lookup" mean and what is the want_lookup table?    I tried this code, and it outputs a dataset that includes all the data. What I'd prefer is a dataset that include one indicator of the earlist date it is found. For example, if id and date are found in date0 ,there is no need to check whether it can be found in date 1, or 2 etc, and no need to output that info. Any idea? Thanks! ... View more

Iterate over hash key

by Calcite | Level 5 in SAS Procedures
‎10-28-2016 06:20 PM
‎10-28-2016 06:20 PM
So I have a hash with id and date as its keys. I'd like to use these two keys to find data in "set" dataset. If the data can not be found using id and date, I'd like to see if it can be found using id and date+1. If not then try id and date+2, id and date+3 ... up to date+10. I'm not sure how to achieve this "if then" effect and how to iterate over hash keys.    The dataset is really large, so I was suggested to use Hash rather than proc sql. Any idea?   Thanks!! ... View more

Re: Output hash dataset if not found

by Calcite | Level 5 in SAS Procedures
‎10-27-2016 01:27 PM
‎10-27-2016 01:27 PM
This works! Thanks! ... View more

Re: Output hash dataset if not found

by Calcite | Level 5 in SAS Procedures
‎10-27-2016 01:26 PM
‎10-27-2016 01:26 PM
The dataset is really large (more than 400 GB), so I was suggested to use Hash. But thanks for your help! ... View more

Output hash dataset if not found

by Calcite | Level 5 in SAS Procedures
‎10-26-2016 07:52 PM
‎10-26-2016 07:52 PM
Hi,   I used one dataset as a hash, with "ID" as its key. I also have other variables in the hash that I want to keep and I included them in defineData.    I'd like to output variables in the hash, where the "ID" can not be found in the main dataset, because I'm more interested in variables that dont exist in the main dataset.   The codes I'm using now are like this: if hash.find()^=o then output .... But it seems like it outputs variables in the main datasets instead of in the hash.   I can't do it by reversing the hash and main dataset, because the main dataset is far larger than my hash. What code should I use to solve it? Any help will be appreciated!  ... View more
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