CODEWITHSUNDEEP
kdb+
Patel
Patel

Reputation: 139

How to subscribe to KDB RDB Table?

I have a table t which is being updated in KDB in realtime. I want a query which does the subscription to the table?

Thanks.

Upvotes: 0

Views: 737

Answers (1)

jomahony
jomahony

Reputation: 1692

Is it the classic tick.q setup?

If so, the following will work where h is the handle to the tickerplant, t is the table name and s is the subset of symbols that you wish to subscribe to:

/ subscribe and initialize
$[`~t;(upd .)each;(upd .)]h(".u.sub";t;s);

The above is from c.q: https://github.com/KxSystems/kdb/blob/master/tick/c.q

If both pub/sub services need to be set up you can follow tick.q as an example of how it can be done: https://code.kx.com/q/tutorials/startingq/tick/

Upvotes: 3

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