topic Re: autonumber in QlikView https://community.qlik.com/t5/QlikView/autonumber/m-p/1378592#M810944 <HTML><HEAD></HEAD><BODY><P>The hash function maps arbitrary size data to fixed-length data. <SPAN style="font-size: 10pt;">The difference between Hash128 and Hash256 is only the fixed size of the output range values, ie Hash256 allows mapping more distinct values, fewer collisions (input mapped to the same output value). </SPAN><SPAN style="font-size: 10pt;">But it will also consume more memory to store the hash values (but, as these values are then Autonumber'ed, it does not really matter).</SPAN></P></BODY></HTML> Mon, 02 Oct 2017 12:57:16 GMT Anonymous 2017-10-02T12:57:16Z autonumber https://community.qlik.com/t5/QlikView/autonumber/m-p/1378589#M810941 <HTML><HEAD></HEAD><BODY><P>difference between autonumberhash 256 and 128</P></BODY></HTML> Wed, 25 Nov 2020 16:16:04 GMT https://community.qlik.com/t5/QlikView/autonumber/m-p/1378589#M810941 manoj217 2020-11-25T16:16:04Z Re: autonumber https://community.qlik.com/t5/QlikView/autonumber/m-p/1378590#M810942 <HTML><HEAD></HEAD><BODY><P>Have a look at this thread. Maybe this can help you out.</P><P></P><P><A href="https://community.qlik.com/thread/124637">what is autonumber hash function ? autonumberhash 128 and autonumber hash 256?</A></P></BODY></HTML> Mon, 02 Oct 2017 11:30:23 GMT https://community.qlik.com/t5/QlikView/autonumber/m-p/1378590#M810942 rickpostprovelu 2017-10-02T11:30:23Z Re: autonumber https://community.qlik.com/t5/QlikView/autonumber/m-p/1378591#M810943 <HTML><HEAD></HEAD><BODY><P>The only difference AFAIK is the hash value size in bit, 128 bit vs. 256 bit.</P></BODY></HTML> Mon, 02 Oct 2017 12:23:56 GMT https://community.qlik.com/t5/QlikView/autonumber/m-p/1378591#M810943 swuehl 2017-10-02T12:23:56Z Re: autonumber https://community.qlik.com/t5/QlikView/autonumber/m-p/1378592#M810944 <HTML><HEAD></HEAD><BODY><P>The hash function maps arbitrary size data to fixed-length data. <SPAN style="font-size: 10pt;">The difference between Hash128 and Hash256 is only the fixed size of the output range values, ie Hash256 allows mapping more distinct values, fewer collisions (input mapped to the same output value). </SPAN><SPAN style="font-size: 10pt;">But it will also consume more memory to store the hash values (but, as these values are then Autonumber'ed, it does not really matter).</SPAN></P></BODY></HTML> Mon, 02 Oct 2017 12:57:16 GMT https://community.qlik.com/t5/QlikView/autonumber/m-p/1378592#M810944 Anonymous 2017-10-02T12:57:16Z