How to check the problem of one date data in partition table?

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1

HI, if I run this query:

select from `:/folder/trade/

(trade suppose to be a partition table with trade data )

And it get “length” error, anything I can do to further check what is the problem? Say which column have less element than other column?

2

q)`:db/2000.01.01/t/ set (a:til 10;b:til 10;c:til 10)

q)`:db/2000.01.01/t/c set til 5

q)select from `:db/2000.01.01/t

'length

  [0]  select from `:db/2000.01.01/t

              ^

q)count each :db/2000.01.01/t/ each get :db/2000.01.01/t/.d

10 10 5

3

Thanks a lot Charles, it is very helpful