https://communities.sas.com/t5/SAS-Programming/SAS-Base-Query/m-p/336142#M76180 <PRE>data want;<BR /> custno="12345671819";<BR /> substr(custno,5,4)="XXXX";<BR />run;</PRE> <P>Typo updated.&nbsp;</P> Mon, 27 Feb 2017 10:16:57 GMT RW9 2017-02-27T10:16:57Z https://communities.sas.com/t5/SAS-Programming/SAS-Base-Query/m-p/336140#M76179 <P>CustNo</P><P>12345671819</P><P>17289201010</P><P>&nbsp;</P><P>May I know how to disguise the 5th to 8th digit of the CustNo from number to XXXX? Thanks.</P> Mon, 27 Feb 2017 09:53:48 GMT https://communities.sas.com/t5/SAS-Programming/SAS-Base-Query/m-p/336140#M76179 scb 2017-02-27T09:53:48Z https://communities.sas.com/t5/SAS-Programming/SAS-Base-Query/m-p/336142#M76180 <PRE>data want;<BR /> custno="12345671819";<BR /> substr(custno,5,4)="XXXX";<BR />run;</PRE> <P>Typo updated.&nbsp;</P> Mon, 27 Feb 2017 10:16:57 GMT https://communities.sas.com/t5/SAS-Programming/SAS-Base-Query/m-p/336142#M76180 RW9 2017-02-27T10:16:57Z