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The entity cannot be constructed in a LINQ to Entities query
There is an entity type called Product that is generated by entity framework.
I have written this query
14 Answers
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How update the _id of one MongoDB Document?
I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get:
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pandas three-way joining multiple dataframes on columns
I have 3 CSV files. Each has the first column as the (string) names of people, while all the other columns in each dataframe are attributes of that person.
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How do I truncate a .NET string?
I would like to truncate a string such that its length is not longer than a given value. I am writing to a database table and want to ensure that the values I write meet the constraint of the column's datatype.
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How to pass command line arguments to a shell alias? [duplicate]
How do I pass the command line arguments to an alias? Here is a sample:
11 Answers
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How to specify a min but no max decimal using the range data annotation attribute?
I would like to specify that a decimal field for a price must be >= 0 but I don't really want to impose a max value.
10 Ans...
SQLAlchemy: Creating vs. Reusing a Session
Just a quick question: SQLAlchemy talks about calling sessionmaker() once but calling the resulting Session() class each time you need to talk to your DB. For me that means the second I would do my first session.add(x) or something similar, I would first do
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What is the difference between an interface and a class, and why I should use an interface when I ca
I am aware that this is a very basic question, but an interviewer asked me in a very trick way and I was helpless :(
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Developing GUIs in Python: Tkinter vs PyQt [closed]
If one wants to develop a user interface in Python, which one to go for: TkInter or PyQt?
6 Answers
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