# Can I use KDB to select fastest data record from multiple data

**URL:** <https://forum.kx.com/t/can-i-use-kdb-to-select-fastest-data-record-from-multiple-data/12128>\
**Category:** Community Support\
**Tags:** kdb-and-q\
**Created:** [April 13, 2021, 6:36am UTC](https://forum.kx.com/t/can-i-use-kdb-to-select-fastest-data-record-from-multiple-data/12128 "2021-04-13T06:36:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![charles\_upboy](https://avatars.discourse-cdn.com/v4/letter/c/b487fb/32.png) [@charles\_upboy](https://forum.kx.com/u/charles_upboy)\
**Post date:** [April 13, 2021, 6:36am UTC](https://forum.kx.com/t/can-i-use-kdb-to-select-fastest-data-record-from-multiple-data/12128/1 "2021-04-13T06:36:00Z")

</div>

Bellow is the architecture:

Data Vendor A ------\> KDB A-------\> End User

Data Vendor B ------\> KDB B-------\> End User

Now we have a problem that sometimes Vendor A is faster and more stable than Vendor B, sometimes B is better than A.

And we wanna do data selection from A and B, using the key like: Sym + Time.

Is there any way to using some built in function or model in KDB to implement this?

thanks