I'm asking this question in response to this article. The article claims that a computer program has been created that scores 150 on a number-pattern based IQ test. I can find no such test online, has anyone heard of one? I would like to test my own program, which currently answers 6 of 8 questions correctly on this test, but it doesn't give me an IQ.
Math-based patterns are ideal, like: 1 4 10 22
Not stuff like this: 1 2 1 3 1 4 1
Have a look on kaggle. They have have all kind of machine learning datasets and challenges. For example this sounds like something similar to what you are looking for.
Related
I have a number range defined in my database to retrieve order numbers. Every two years, the numbers should be reset to start again with 1.
So I created the following Quartz Cron expression '0 0 0 1 1 ? */2' using cron-utils (https://github.com/jmrozanec/cron-utils) to do the reset every two years on Jan, 1st.
This will be parsed correctly.
The problem now is, that I'm not able to create an EJB TimerService with that expression, because
the '?' character is not supported and
year doesn't support values of types INCREMENT.
So how to achieve this?
I am running my application on WildFly 23 using JDK11.
While I am not at all convinced of this design, if you expect that your code will last 10 years, how about something like:
0 0 0 1 1 ? 2023,2025,2027,2029,2031,2033
That would let you retire with your code working 10 more years. If you need it to run longer then add a few more years. The ? is supported according to the Quartz docs.
First, just to say I'm new here and new to programming, so I've never used sql in sap.
I'm trying to learn how to create a query in which I'm trying to loop a table. Here is an abbreviated version of the table:
OALI
OrigItem AltItem
1 2
2 3
4 5
5 6
I want to retrieve the last AltItem in the chain, so 1 would give 3 and 4 would be 6.
OrigItem AltItem FinalItem
1 2 3
2 3 3
4 5 6
5 6 6
I'm sure this is simple, but I get an erro on the declaration of the variable.
BTW, if you can help me out with a good place to learn SQL for SAP, that you be great.
Thank you.
You can't do a WHILE statement within a SELECT statement, it just won't work.
The way you would go about this is different depending on what exactly you're trying to achieve.
You could use a cursor to get a result set that you can iterate over, or store your temporary results to a #Temp_Table or #Table_Variable and delete them one by one as you complete the iteration.
All this being said, any iterative procedure in SQL will be much slower than a Set Based query, so see if you can avoid loops of any kind if possible.
One thing you could look at is nested SELECT statements, like so:
SELECT OrigItem, AltItem,
(SELECT COUNT(AltItem)
FROM OALI T1
WHERE T0.OrigItem = T1.OrigItem) as 'AltItem Count'
FROM OALI T0
Ok, from the title it seems to be impossible to understand, I'll try to be as clear as possible.
Basically, I have a table, let's call it 'records'. In this table I have some products, of which I store 'id', 'codex' (which is a unique identifier for a certain product in the whole database), 'price' and 'situation'. This last one is a string which tells me wether the product has just entered the store (in that case it is set to 'IN'), or it has already been sold ('OUT' in this case).
The database was not created by us, I HAVE to work with that although it is horribly structured... The guy who originally projected the database decided to register when a product's situation passes from 'IN' to 'OUT' in the following way: instead of UPDATEing the corresponding value in the table, he used to take the row of data with 'IN' as situation, and to DUPLICATE it setting, that time, 'OUT' as situation.
Just to sum up: if a product has not been sold yet, it will have one row of dedicated data; otherwise those rows will be two, identical except for the 'situation' field.
What I need to do is: select a product if (and ONLY if) there is no duplicate for it. Basically, I can (and should) look for a 'codex', and if I my Count(codex) ends up being >1, I do not select the row.
I hope the explanation of the process is clear enough...
I tryed many alternative (no, SELECT DISTINCT is not a solution): des anyone have an idea of how to do that? Because really, none of us three could come up with a good solution!
Here is the schema for the table, I hope it is sufficiently clear, and if not do not hesitate asking for more details.
Just as a reminder: the project is in (sigh...) VB.net, the database is in Microsoft Access (mdb).
I could not find a solution on StackOverFlow, I hope this is not a duplicate question! Thanks in advance for the help.
id codex price situation
1 1 2.50 IN
2 1 2.50 OUT
3 2 3.45 IN
4 3 21.50 IN
5 2 3.45 OUT
6 4 1.50 IN
To check if I understand what your problem is... In your example table you just want to get the lines with ID 4 a 6, right?
If is that what you want, and If you want only the not sold ones try this command
SELECT
*
FROM
records
WHERE
codex
not in
(
SELECT
codex
FROM
records
WHERE
situation ='OUT'
)
First off, I have very minimal experience with servers and databases (I have only used it once in my entire life and only beginning to learn) and this would not exactly be a "code" question strictly speaking because it is a question concerning a concept regarding DynamoDB.. But here it is because I cannot find answer to it no matter how much I search!
I am trying to make an application where users can see if their friends are "online" or not. There will be a table that keeps track of the users who are online and offline like this:
user_id | online
1 | O
2 | X
3 | O
and when user_id 1 who has friends 2 & 3 "refreshes", 1 would be able to see that 2 is offline and 3 is online. This would normally be done by batch_get in dynamodb, but each item I read would count as one unit, meaning if user1 had 20 friends, one refresh would use up 20 read units. To me, that would cost too much, and I thought that if I made a table for each user that would hold list of their friends that shows whether they are online or not, each refresh would cost only one read unit.
user_id | friends_on_off_line
1 | {2:X, 3:O}
2 | {1:O}
3 | {1:O}
However, the values in the list would have to be a "pointer" to the first table, because I cannot update the value everytime someone goes online or offline (if 1 went offline, I would have to write 1 as offline to both tables, and in second table, write it twice, using 3 write units which would end up costing even more)
So I am trying to make it so that in second table, values would point to the first table that would read whether they are online/offline and return the values as a list using only 1 read unit: like this
user_id | friends_on_off_line
1 | {pointer_to_2.online , pointer_to_3.online}
2 | {pointer_to_1.online}
3 | {pointer_to_1.online}
Is this possible in DynamoDB? If not, which service should I use and how can I make it possible?
Thanks in advance!
I don't think DynamoDB is the right tool for this kind of job.
SQL databases (Mysql/PostgreSQL) both have easy designs - just use joins (pointers).
You can also look at this question regarding this area for MongoDB.
What you should ask yourself is what are the most common questions the database needs to answer and what is the update / read rate. This questions usually navigate you to the right direction when picking up a database.
I am designing a relational DB for an online survey.
However, I am not sure what is the best relational database design for storing multidimensional matrix questions.
Let's say, I have the following question (sorry, it does not allow me to insert HTML table):
What was your experience of...
----------| Not friendly| (2) |Very friendly|Length of stay|Visited in the last year?|
Sydney |radio button | rb | rb | drop down | check box |
--------------------------------------------------------------------------------------
New York | rb | rb | rb | drop down | check box |
--------------------------------------------------------------------------------------
London | rb | rb | rb | drop down | check box |
--------------------------------------------------------------------------------------
Do you think I should do something along the following lines or is there a better way?
To hold all the question:
Question
questionID
question
QuestionMatrix2d
matrix2dID
questionID
subquestionID
subquestion
QuestionMatrix
questionID
matrix2dID
question_parentID
And to hold all the responses:
QuestionResponse
questionID
response_code
QuestionMatrix2dResponse
questionID
subquestionID
response_code
Thank you for your help.
I disagree with ryan1234. This totally is a relational problem, and there is very little reason not to put it into a database.
I have to do a bit of guesswork though, in what you're trying to achieve here. You have an online survey, so I assume it will be used by more than one person. Your database will need to acommodate for that by having a session or user table, I'll go with the latter since it is more clear to read.
Secondly, you have a list of locations (Sidney, New York, London). I assume this list can either change over time or even from one questionaire to the next.
Then you have a set of questions. You don't explicitly state that these would be variable or fixed. Since you designed a set of tables for that, I assume it's supposed to be variable. Please note that your questions are not a matrix, but a list. Even if they are hierarchical, they still do not compose a matrix.
Last but not least you've got answers to those questions.
Lets create a users table:
user_id user_name
1 me
2 somebody else
Second table is as simple: locations
location_id location_name
1 Sidney
2 New York
3 London
Third table is a bit more complicated - and to be honest: just plain ugly. But this is what you get if you design a database in a database, and the alternatives (using DDL or storing that information in XML/JSON or even outside the database) are not pretty either. If there is a hierarchical question (your examples don't show them), you could add a "parent_question_id" column.
question_id question_text question_type question_type_info
1 How do you rate RADIO 0 to 5
2 Length of stay COMBOBOX 1 day, 2 days, whatever
3 Visited last year CHECKBOX
Finally you need a fourth table to store all the answers
user_id location_id question_id value
1 1 1 2 <-- value here means "rating of 2"
1 1 2 5 <-- value here means "5 days"
1 1 3 1 <-- value here means "yes, visited last year"
Yep. ugly as well. If you had a fixed list of questions I could provide you with a pretty database :)
Edit: Answering to your comments: To link your questions to a survey, you'll need a few more tables surveys defining which questions for which locations are going to be asked. The following database layout lets you specify a list of locations and a list of questions asked as well as a survey name.
Table surveys:
survey_id survey_name
1 Spring 2013 London Travel Survey
2 Spring 2013 Northern Hemisphere Short Survey
Table survey_questions:
survey_id question_id
1 1
1 2
1 3
2 1
Table survey_locations:
survey_id location_id
1 1
2 1
2 2
The contents I put in here gives you two surveys. Survey #1 will ask all three questions just on one location: 'London'. Survey #2 will just ask one question on both London and New York. If you want to ask different questions on different locations your table layout will have to accommodate for that, but such a system won't fit into your original table-like layout.
Having done things similar to this, I would recommend considering not turning this into a relational problem. What if you have objects and just serialize them to something like JSON and store that?
Doing this relationally you'll end up spending quite a bit of time making tables and wiring together complex drawing code in your application to make sure the questions/answers draw in the right order etc.
Otherwise I think you can make your approach work. There is no silver bullet for designing survey stuff in an RDBMS.