Re: [SQL] 64-bit hash function, and seeding

2019-03-05 Thread Huon.Wilson
Hi Nicolas, On 6/3/19, 7:48 am, "Nicolas Paris" wrote: Hi Huon Good catch. A 64 bit hash is definitely a useful function. > the birthday paradox implies >50% chance of at least one for tables larger than 77000 rows Do you know how many rows to have 50% chances fo

Re: [SQL] 64-bit hash function, and seeding

2019-03-05 Thread Nicolas Paris
Hi Huon Good catch. A 64 bit hash is definitely a useful function. > the birthday paradox implies >50% chance of at least one for tables larger > than 77000 rows Do you know how many rows to have 50% chances for a 64 bit hash ? About the seed column, to me there is no need for such an argume