Hello, I am merging 22 years of data sets in SAS 9.4 and I am getting several error statements saying variables such as sex, race, zipcode are defined a both character and numeric. sex is M(male), F(female), U(unknown) race is c 1(AIAN), 2(A), 3(BAA), 4(NHOPI), 5(W), 6(O), 7(U) zipcode is continuous numbers Will I have to rename these variables in each data set before I merge them? This was my merging code: data IHD9214;
set Ahca.Ihd1992 Ahca.Ihd1993 Ahca.Ihd1994 Ahca.Ihd1995 Ahca.Ihd1996 Ahca.Ihd1997 Ahca.Ihd1998 Ahca.Ihd1999 Ahca.Ihd2000 Ahca.Ihd2001 Ahca.Ihd2002 Ahca.Ihd2003 Ahca.Ihd2004 Ahca.Ihd2005 Ahca.Ihd2006 Ahca.Ihd2007 Ahca.Ihd2008 Ahca.Ihd2009 Ahca.Ihd2010 Ahca.Ihd2011 Ahca.Ihd2012 Ahca.Ihd2013 Ahca.Ihd2014;
run;
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