• ###### StephenDonovan1commented on "Retrieve array value by index with default" python solution

I believe this fails for index == len(items), the conditional is true so it'll try to look it up but the index is out of bounds.

Using & operator with two sets creates a new set containing the elements present in both sets.

• ###### LofuFoxycommented on "Santa's Naughty List" python solution

This comment is hidden because it contains spoiler information about the solution

• ###### Brezacommented on "Calculating Batting Average" kata

Looking at the tests, casting is apparently required

• ###### d0dulk0commented on "SELECT prime numbers" kata

this one was an absolute blast! thank you

• ###### ScottFitzgerald83commented on "SELECT prime numbers" kata

Practical SQL is pretty good if you're still looking

• ###### FArekkusuresolved a question on "SELECT prime numbers" kata

Not kata-related.

• ###### GRains91commented on "SELECT prime numbers" kata

This comment is hidden because it contains spoiler information about the solution

• ###### tspencer9created a question for "SELECT prime numbers" kata

Can anyone recommend a great book on learning PostgreSQL? I need a good book on it that goes into a good deal of depth. Looking stuff up online is only getting me so far.

Wow :O

• ###### Ze-Marcoscommented on "SELECT prime numbers" kata

I'm very confused with this kata.

I do not want answers just maybe a little bit more of a description of the problem.

I'm weireded out a little because I can't create a function or a procedure.

Please a little feedback would be great.

• ###### Javatlacatiresolved a suggestion on "Subqueries master" kata

it sould be fixed now, can you try again sir?

• ###### swanfcommented on "SELECT prime numbers" kata

Same confuse here, what does it mean "there's no table"? Can you specify it?

• ###### emgordon154commented on "SELECT prime numbers" kata

uhhhhh, something weird just happened. my attempt seemed to succeed for a split second and the submit button appeared, but then the tests failed but the submit button was still there. i thought about pressing submit but decided against it, so i refreshed the page, and when the page reloaded, the sample tests had changed to "qR6a3WQ2B0LCoyNlfbeU3gm91r7WuVMUNBCuF6q4hJnEzKF+YNkgY0CQQSwm
ktRqI0TNW8J/a7cLBkBJcTHbNvcd4h20bIDYDJrt9a+WWb9vr1DKMJUDi0oq
ewMaYkSsflXzg2XtMbgQKcdn0YV1hpQPwaq06BFFlWnx8/BuTMgpnZUimDxE
WI+p4XWaAKTUMwpVkRk9K+UUyO2uSzeJmttQKwSySXRNptH6MIZbH3LgpzTS
Pnc/YmGETmgOH2FGUbfCVLCLDLD2tVfoh8E38oTGOtolkdN4/Qbb+Gelvirb
nbOo3bQw8sYf8I/4AJNnWpY12is9pgmtIJKEKl+fLOESSMunVp8Y39TV/bzj
Ajx1Nz9LQXZS62U2DxaOwG+gS75R75iLEY9feWoB60oLV3pWTWNmEI1rp1gw
az7yVG3xG0QmHwBI/2kS2+9uUzbwbpdK5wZ4Ksy+kPegXbv7x032tdeXY+mE
3fEapzjBZiRGg32ZGC4R9r1Lp3TkHeaj
--AxBKIcRPBBsTqVb3YcSnkA==--u" 🙁

• ###### dbc00percommented on "SELECT prime numbers" kata

@sq6jnx re: filtering out hardcoded solutions, what about searching the submitted SQL code for the presence of all prime numbers between 2 and 100? If they're all (or some representiative subset) present in the SQL code, it fails a test?