kdb+ and q
Q+A on all things kdb+ database and the q language
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Type error from Q chk

Does anyone kwon how to solve/fix type error from .Q.chk? how to check which files could have issue? Thanks

renbright by New Contributor II
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Resolved! ODBC setup for KDB+ to query other databases

Hi community, There used to be this link that provides the instructions for the setup, but it's no longer valid and I cannot find out the updated link anywhere. Note that it's for the reverse direction of querying KDB+ via ODBC where the setup is eas...

darrenwsun by New Contributor III
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Heap is a lot larger than used, how to find the cause?

I've got a process doing some calculations on a timer and sending updated table to another process. Its heap is more than 3x of used even after manual trigger of .Q.gc. key value used 567774096 heap 1946157056 peak 2617245696 I'm using KDB+ 4.0 2021....

In-place attribute removal

Is there any way to do this? `# looks to always be creating a copy of the original list for `g/`u, whether it's applied on a list reference or value. I wrote a C function to set the list object's u member (x->u) to 0, and from within q called this fu...

Changing column type fails

Hello, I have a table that's loaded by some data from an odbc call and the structure is as follows: q)meta res c | t f a ----------| ----- id | C first_name| C last_name | C email | C Updating the column type for "id" to a symbol using the following ...

smdesai by New Contributor II
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