# Merging data across samples

**URL:** <https://forum.ipums.org/t/merging-data-across-samples/402>\
**Category:** USA\
**Created:** [January 23, 2014, 5:15pm UTC](https://forum.ipums.org/t/merging-data-across-samples/402 "2014-01-23T17:15:00Z")\
**Posts on this page:** 1\
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**Author:** ![UrbanUser](https://avatars.discourse-cdn.com/v4/letter/u/6de8d8/32.png) [@UrbanUser](https://forum.ipums.org/u/UrbanUser)\
**Post date:** [January 23, 2014, 5:15pm UTC](https://forum.ipums.org/t/merging-data-across-samples/402/1 "2014-01-23T17:15:00Z")

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A colleague has combined three 1-year ACS samples (CY 2009-2011) and has generated information that I would like to merge into my 3-year 2011 ACS dataset. However, the unique identifiers (SERIAL and PERNUM ) in the datasets differ. Does anyone know of a method to do such a merge? (The value of ADJUST can be used to determine YEAR in the 3-yr sample.)

Thanks,

Joyce Morton

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