topic Re: How to Efficiently Concatenate SAS Datasets with Varying Column Names? in SAS Programming https://communities.sas.com/t5/SAS-Programming/How-to-Efficiently-Concatenate-SAS-Datasets-with-Varying-Column/m-p/901538#M356276 <P>Please describe your situation in more detail. Do you have different names for the same variable, or should end the variables up side-by-side, with missing values for the datasets where they were not present?</P> Sat, 04 Nov 2023 07:38:52 GMT Kurt_Bremser 2023-11-04T07:38:52Z How to Efficiently Concatenate SAS Datasets with Varying Column Names? https://communities.sas.com/t5/SAS-Programming/How-to-Efficiently-Concatenate-SAS-Datasets-with-Varying-Column/m-p/901524#M356275 <P>I'm currently working on a project in SAS Studio and SAS on demand, and I need to concatenate multiple datasets with varying column names. I've come across several approaches, but I'm looking for the most efficient method. Could someone kindly guide me through the steps or share any code snippets that can help me achieve this seamlessly? Your expertise would be greatly appreciated!</P> Sat, 04 Nov 2023 05:20:02 GMT https://communities.sas.com/t5/SAS-Programming/How-to-Efficiently-Concatenate-SAS-Datasets-with-Varying-Column/m-p/901524#M356275 anarose192 2023-11-04T05:20:02Z Re: How to Efficiently Concatenate SAS Datasets with Varying Column Names? https://communities.sas.com/t5/SAS-Programming/How-to-Efficiently-Concatenate-SAS-Datasets-with-Varying-Column/m-p/901538#M356276 <P>Please describe your situation in more detail. Do you have different names for the same variable, or should end the variables up side-by-side, with missing values for the datasets where they were not present?</P> Sat, 04 Nov 2023 07:38:52 GMT https://communities.sas.com/t5/SAS-Programming/How-to-Efficiently-Concatenate-SAS-Datasets-with-Varying-Column/m-p/901538#M356276 Kurt_Bremser 2023-11-04T07:38:52Z Re: How to Efficiently Concatenate SAS Datasets with Varying Column Names? https://communities.sas.com/t5/SAS-Programming/How-to-Efficiently-Concatenate-SAS-Datasets-with-Varying-Column/m-p/901677#M356332 <P>By efficient, do you mean the time it would take to write the program?</P> <P>If your variables that you want to be in the some output variable have the same positions in the input data sets, you can use the UNION ALL operator in SQL, since it doesn't care about variable names (except the one from the first table).</P> Mon, 06 Nov 2023 07:34:39 GMT https://communities.sas.com/t5/SAS-Programming/How-to-Efficiently-Concatenate-SAS-Datasets-with-Varying-Column/m-p/901677#M356332 LinusH 2023-11-06T07:34:39Z