It's important to note that the second WHERE clause prevents 
rows in table ONE from being updated with missing values,     
if the value for ONE.COL1 does not have a matching value in   
TWO.COL1.                                                     

---

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.

---

data one;
input col1 col2 $;
cards;
1     test1
2     test2
3     test3
4     test4
5     test5
6     test6
7     test7
8     test8
9     test9
10    test10
;

data two;
input col1 col2 $;
cards;
1     UPDATED1
3     UPDATED3
5     UPDATED5
7     UPDATED7
9     UPDATED9
;


proc sql ;
 update one
 set col2 = (select two.col2 from two
             where one.col1=two.col1)

 where one.col1 in (select col1 from two);
quit;

proc print data=one; 
run;

---

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    col1    col2

  1      1     UPDATED1
  2      2     test2
  3      3     UPDATED3
  4      4     test4
  5      5     UPDATED5
  6      6     test6
  7      7     UPDATED7
  8      8     test8
  9      9     UPDATED9
 10     10     test10

This example illustrates updating the values of ONE.COL2 with the values from TWO.COL2, providing there is a match between COL1 in both tables.

Type:	Sample
Topic:	SAS Reference ==> Procedures ==> SQL

Date Modified:	2005-03-19 03:02:45
Date Created:	2005-02-14 10:29:44

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