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How to add column if not exists on PostgreSQL?
Question is simple. How to add column x to table y , but only when x column doesn't exist ? I found only solution here how to check if column exists.
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Start thread with member function
I am trying to construct a std::thread with a member function that takes no arguments and returns void . I can't figure out any syntax that works - the compiler complains no matter what. What is the correct way to implement spawn() so that it returns a std::thread that executes test() ?
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Visual Studio debugging “quick watch” tool and lambda expressions
Why can't I use lambda expressions while debugging in “Quick watch” window?
9 Answers
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Frequency table for a single variable
One last newbie pandas question for the day: How do I generate a table for a single Series?
4 Answers
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Explicit vs implicit SQL joins
Is there any efficiency difference in an explicit vs implicit inner join?
For example:
12 Answers
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How to solve privileges issues when restore PostgreSQL Database
I have dumped a clean, no owner backup for Postgres Database with the command
10 Answers
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Regular expression to match a word or its prefix
I want to match a regular expression on a whole word.
4 Answers
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How to autosize a textarea using Prototype?
I'm currently working on an internal sales application for the company I work for, and I've got a form that allows the user to change the delivery address.
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When to use IMG vs. CSS background-image?
In what situations is it more appropriate to use an HTML IMG tag to display an image, as opposed to a CSS background-image , and vice-versa?
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How do I enable MSDTC on SQL Server?
Is this even a valid question? I have a .NET Windows app that is using MSTDC and it is throwing an exception:
6 Answers
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