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QUESTION
I have the following 3 tables:
Parents table
...ANSWER
Answered 2022-Apr-08 at 11:53You should count the distinct children for each parent because the joins may return more than 1 row for each child.
As it is your query there is no need to count distinct grandchildren but if you decide to add more joins then you should also do that too.
In any case use the keyword DISTINCT
(and aliases for the tables to make the code more readable):
QUESTION
I have a dataframe that has several columns. I grouped it by 'Name' and sorted by 'Date1'. A subset of the dataset is below :-
...ANSWER
Answered 2022-Jan-25 at 00:44Here is my attempt, it is a bit ugly, but I think it works (except that the last difference is 180 days instead of 181):
QUESTION
I've ran into an issue with my code for the last week or so, and its been killing me trying to figure out what's wrong with it. I've extracted and isolated the issue from my main project, but the issue still isn't apparent.
Essentially, I have a function that usually does a lot of stuff, but in this example just changes 1 element in an array called FalseTable. Now, I have set this variable to be ByVal, meaning the original variable (ie: TrueTable) shouldn't change, however, it does! Here is the full code:
...ANSWER
Answered 2021-Dec-23 at 01:17To understand why that happens just imagine this scenario.
You have a regular TextBox1 (this will be your TrueTable), now you want to pass the object TextBox1 to a function, something like this:
QUESTION
I've been having a big issue with child and parent objects in vb.net (more specifically, in a VB.net Windows Forms Application). In the example code, I have assigned the contents of PieceArray (which each correspond to a PictureBox on the screen), and have added these values to a parent called Checkerboard (which is another PictureBox on which the other elements are placed upon).
For this code, it is very important that I use the Me.Controls() function, as it allows me to store a string with the same name as an object, and call the object from that string.
...ANSWER
Answered 2021-Oct-04 at 21:05Control.Controls
only returns the controls immediately contained within Control. In order to use the Controls property you'd need to run that on the "parents" instead of Me
. Instead you can use the Control.Controls.Find
function
QUESTION
have two arrays one with a simple array with all the elements have integer value and another one with array of objects with an array (nested object).
need to compare both the array and remove the value which is not equilant.
...ANSWER
Answered 2021-Jun-15 at 11:29QUESTION
I'm trying to convert this piece of html without any css:
...ANSWER
Answered 2021-May-26 at 07:59As far as I can see your issue is caused by the lack of word wrapping. Your last table row has a long uninterrupted string: the link with the UTM-tags. If you'd remove the utm-tags from it, the cropping would not persist.
QUESTION
I have a simple question that i'm hoping you all can help with.
I have two spreadsheets:
Spreadsheet A:
...ANSWER
Answered 2021-Mar-10 at 20:54df = dfA.merge(dfB, how = 'outer' ,indicator=True)
df1=df[df['_merge'].ne('both')]
Firstname Lastname Address Email _merge
2 Candace Candy 5Lane candy@candy.com left_only
3 Brian Powers 6Street brian@brian.com right_only
4 Alfred Cruse 7Street alfie@alfie.com right_only
QUESTION
In Python's Flask-Admin for database table viewing/administrating, I need the view to open automatically to the last page of the paginated data.
Important: I cannot simply sort the records descending so the last record shows first.
Here's what my simple example below looks like. I'd like it to start on the last page, as pictured.
Here's some example code to reproduce my model:
...ANSWER
Answered 2020-Dec-16 at 11:52what about the following idea:
QUESTION
I am trying to parse a string with parentheses inside parentheses. As long as the string to parse is pretty small and don't have to many nested parentheses everything is working fine.
But, when the string to parse get big I keep getting errors like FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
and RangeError: Maximum call stack size exceeded
.
Can anyone tell me how I can optimize/fix the code below so it works on strings of bigger size without memory and stack size errors? The big string I am trying to parse can be found here
The goal is to turn a string looking like this
...ANSWER
Answered 2020-Dec-13 at 06:10I would opt to parse it in a linear fashion instead - Organize all of the characters in the file in a single sweep. No regex necessary. It not only makes it run faster (and capable of parsing your large textfile), but it looks a little nicer too.
Here's an example:
QUESTION
I am using React .js
There are 3 arrays a
, b
, c
.
I add array a
to HTML markup using the map()
method.
I need:
To hang the
onClick
event handler on the elements of thea
array so that when the element is clicked, this element is reflected to thecomponent.
The
component should display the elements of the arrays
b
andc
with the same indices as the index of the pressed array elementa
.
For example: in HTML markup I click on the "plum" elements (index = 2). In thecomponent you need to get "plum" and the elements "Sophie" and "audi" (index = 2 arrays
b
andc
)
How to do the above points?
...ANSWER
Answered 2020-Dec-01 at 19:47You could add an onClick
to each li
inside your map
function, like so
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