Merge multiple data sets using the formatted version of the BY variable(s) rather than the stored value.

Note: In this sample, the BY variable is a SAS date, therefore it is stored as the exact number of days from January 1, 1960. A MERGE based upon the stored value of date would only consider the exact date as a match. Merging by a formatted value, such as MONYYw., the BY group is based upon month and year, rather than the specific date.

GROUPFORMAT can be specified anywhere on the BY statement and will apply to all BY variables.

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These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.

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data one;
  input date :mmddyy6. x $;
  format date date9.;
datalines;
010104 a
011504 b
012804 c
020204 a
022904 b
031304 a
031504 b
;

data two;
  input date :mmddyy6. y;
datalines;
011204 111
021504 222
031704 333
;

data three;
  format date monyy7.;
  merge one two;
  by groupformat date;
run;

proc print data=three;
run;

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These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.

Obs       date    x     y

 1     JAN2004    a    111
 2     JAN2004    b    111
 3     JAN2004    c    111
 4     FEB2004    a    222
 5     FEB2004    b    222
 6     MAR2004    a    333
 7     MAR2004    b    333

Merge multiple data sets using the formatted version of the BY variable(s) rather than the stored value.

Type:	Sample
Topic:	SAS Reference ==> DATA Step SAS Reference ==> Statements ==> File-handling ==> MERGE Common Programming Tasks ==> Combining Data SAS Reference ==> Statements ==> File-handling ==> MERGE ==> with BY

Date Modified:	2008-01-28 11:44:43
Date Created:	2004-09-30 14:09:14

Operating System and Release Information

Product Family	Product	Host	SAS Release
			Starting	Ending
SAS System	Base SAS	All	n/a	n/a