« How do I sort? | Main | Is there a free trial version of kdb available for download? »

What happens if I duplicate a partition name across multiple segments?

The content of the table is split across n segments. For example, par.txt specifies 3 segments below and slices a table named vltablename by symbol into 3 segments.

For example:

$ cat /vol/db/par.txt

$ ls /vol/disk*/segment/2011.03.07/vltable
/vol/disk1/segment/2011.03.07/vltable # sym A-I
/vol/disk2/segment/2011.03.07/vltable # sym J-R
/vol/disk3/segment/2011.03.07/vltable # sym R-Z

Note that the typical `p# attribute of column sym will be missing in the query result. Remember to re-apply the attribute prior to use.

See also: .Q.u, and .Q.par

PrintView Printer Friendly Version

EmailEmail Article to Friend

Reader Comments

There are no comments for this journal entry. To create a new comment, use the form below.

PostPost a New Comment

Enter your information below to add a new comment.

My response is on my own website »
Author Email (optional):
Author URL (optional):
All HTML will be escaped. Textile formatting is allowed.