kandi X-RAY | Pcode Summary
kandi X-RAY | Pcode Summary
Python 3 IDE
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Top functions reviewed by kandi - BETA
- Start all stuff
- Indent the continuation line .
- Parse command line options .
- Calculate the rank of a candidate .
- Return the default font style
- Writes the build profile .
- Parse a module .
- Start tracing .
- r Check for missing whitespace around operator .
- Writes the modules to the specified location .
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QUESTION
I have an excel file with about 21000 rows . I imported it into a temp Table in my database.
Now I want to do some conversions on my data and then put them into my main table.
When I do SaveChanges()
inside a foreach
I got the following error:
Microsoft.Data.SqlClient.SqlException: 'New transaction is not allowed because there are other threads running in the session
When I use it after the foreach
no error occurs and the table has just 4 records inserted instead of all 21000 records that I expected.
ANSWER
Answered 2021-Jun-03 at 11:13You have a bug in your code. You declared and created L outside of the loop. Each time you add the same L , only with different data. In the end you have list of the same data that was created during the last foreach loop cicle.
try this:
QUESTION
I've some data in database (sql server 2008) in JSON format with unicode like this:
...ANSWER
Answered 2021-Jun-11 at 04:28Any better practice?
QUESTION
As I explained in title I have 2 tables : 1 - "Leaves" with 21000 rec of leaves for about 50 peoples during 20 years 2- "StatisticLeave" which is empty now i want to use group by for getting some statistic data from table 1 and after doing some calculation (like sum & ...) putting the results into the second table. I wrote below code :
...ANSWER
Answered 2021-Jun-13 at 10:30I changed my code as below and the problem Solved
QUESTION
I have about 2000 records in my table. So I need to use pagination in my view. here is my code in Action:
...ANSWER
Answered 2021-Jun-09 at 04:00I worked on and finally the code was Ok!!! here is my code in Action
QUESTION
The first variable needs to be DOM as you can see is commented out. It works when i manually set the productCode variable like below.
...ANSWER
Answered 2021-May-28 at 18:43Problem solved!
I had to put the DOM call inside of the function like so:
QUESTION
I recently wrote a code for my shiny app but accidentally deleted some parts of it. The codes were working previously. However, when I try to recover the codes by retyping it again and run the app, the old issues came back.
First, this is a dataset that I used as testing for my app:
...ANSWER
Answered 2021-May-26 at 19:18The issue is based on how you are calling eventReactive
objects. Replace this line
QUESTION
When I try to save many to many field in django. It only save one item , even when I have selected 2 items from the template.
My views.py looks like this
...ANSWER
Answered 2021-May-23 at 18:45You are using set
when adding new elements, which is incorrect: created_class.Class.set([classes])
Use add
instead:
QUESTION
I have these 2 sql queries, the first one is loading data from sql into DGV in vb.net, and then I have to go row by row to execute the second query to get some additional data (newprice) based on some conditions for each record ( the "newprice" is in the same table in the first query ), everything is working fine as I want, but the problem that is taking too long as the code is going through all the rows, with big data it takes a lot of time, is there anyway to optimize this code to work faster by combining the 2 queries? I've tried but couldn't figure out how to do it. thank you
Query 1:
...ANSWER
Answered 2021-May-22 at 14:43To improve performance, you should do the following:
Create a DataTable and fill the data table using a DataAdapter instead of using a DataReader. You can then bind your DataTable with your DataGridView. You then loop through the rows of the DataTable and do whatever update you please to do. While you update the DataTable, you can suspend UI refresh to avoid having the UI updated upon each change in the DataTable.
If you want extra speed up, create a class to contain a single record and use property get and set for each field. Using a DataReader create an instance for each record and add it to a List of type List of YourClass where YourClass is the class you created. Bind the list to the DataGridView.
Extra advices:
- Use parameterized queries
- Create constants for strings representing transaction types.
- Instead of repeating the same string for transaction type, use a transaction type table and have an integer for each type and a short and long description. Use this code everywhere instead of the hardcoded string.
- Use x in (a, b, c, d) instead of x = a or x = b...
QUESTION
The code I am using is shown below but seems very slow to calculate the sum - around 20 seconds. Any suggestions for how to speed this up ?
Actually its a bit more complicated since I need to create a fine result object that includes all the original properties and the count updated to the sum.
...ANSWER
Answered 2021-May-21 at 12:34This should do the trick:
QUESTION
I'm building a property valuation form.
U can filter by postcode and type.
after filtering, I should show a list with the properties and the average price but I don't know why the sum is not working.
Thank you in advance for your help :)
here my code
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ANSWER
Answered 2021-May-20 at 20:21Your sum is not working, because JS is summing up strings, which gives You concatenation.
All You need to do is to replace this part:
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