Fundamentals Capstone 5.3 Problem

Community Support
,
1

Hi all,

Just sending through a message because I am a little confused on the last exercise of the Fundamentals capstone assignment, which I am currently failing at:

quizItem success description error ------------------------------------------------------------------------- exercise5.1 Pass “optProfile Is Defined In Process” “” exercise5.1 Pass “optProfile Has Correct Format And Values” “” exercise5.2 Pass “edgeProfile Is Defined In Process” “” exercise5.2 Pass “edgeProfile Has Correct Format And Values” “” exercise5.3 Pass “edgeProfileFull Is Defined In Process” “” exercise5.3 Fail “edgeProfileFull Has Correct Format And Values” “”

Within this, I am currently calling the following:

5.3 Create a new table edgeProfileFull using the edgeProfile table (or otherwise) which has the edgeProfile information augmented with the underlying instrument information in a readable format. Hint: The instRef table contains the readable information and can be linked with the optRef table Helper Exercises: Try the exercises in our previous Joins module before attempting this exercise ```q edgeProfileFull: lj[0!edgeProfile;xkey[option_id;select inst_id, inst_syb, inst_name, option_id from lj[optRef;xkey[inst_id;instRef]]]]

As I understand it, all this is asking us to do is join the data from the instRef to our existing edgeProfile table (which has passed all tests).
Could it be that I have misunderstood the question as I cannot spot any errors assuming that my interpretation is correct?

Thank you.

Freddie.

2

Hi Freddie,

Looks like your nested lj isn’t doing what you expect as only columns from instRef are being joined on, not ones from optRef. The question asks for both.

 

Hint the table schema of edgeProfileFull should look like

c | t f a
---------| -----
option_id| s
numTrds | j
avgEdge | f
minQty | j
maxQty | j
inst_id | j
opt_type | s
strike | j
expiry | d
inst_syb | s
inst_name| C

and the table should be keyed.

 

Hope this helps!

3

That is problem solved!

Thank you.