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You can't specify target table for update in FROM clause
... SELECT B
FROM myTable
INNER JOIN ...
)
That is, if you're doing an UPDATE/INSERT/DELETE on a table, you can't reference that table in an inner query (you can however reference a field from that outer table...)
The solution is to replace the instance of myTable in the sub-query with (...
JMS and AMQP - RabbitMQ
I am trying to understand what JMS and how it is connected to AMQP terminology.
I know JMS is an API and AMQP is a protocol.
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How to initialize all members of an array to the same value in Swift?
I have a large array in Swift. I want to initialize all members to the same value (i.e. it could be zero or some other value). What would be the best approach?
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iPhone Debugging: How to resolve 'failed to get the task for process'?
I have just added a provisioning profile to XCode (needed to support notifications and in app purchase), setup as needed the build configuration for ad hoc distribution, and tried to run the app on the device (I have done this several times in the past, without any problem).
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Grep and Sed Equivalent for XML Command Line Processing
When doing shell scripting, typically data will be in files of single line records like csv. It's really simple to handle this data with grep and sed . But I have to deal with XML often, so I'd really like a way to script access to that XML data via the command line. What are the best tools?
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Is it possible to make anonymous inner classes in Java static?
...e static , they do not contain a reference to the pointer of the containing instance (they are also not called inner classes anymore, they are called nested classes).
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How can I trigger a JavaScript event click
I have a hyperlink in my page. I am trying to automate a number of clicks on the hyperlink for testing purposes. Is there any way you can simulate 50 clicks on the hyperlink using JavaScript?
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Fastest way to download a GitHub project
I need to download the source code of the project Spring data graph example into my box. It has public read-only access. Is there is an extremely fast way of downloading this code?
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How to automatically install Ansible Galaxy roles?
All my Ansible playbooks/roles are checked in to my git repo.
8 Answers
8
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Python idiom to return first item or None
I'm sure there's a simpler way of doing this that's just not occurring to me.
23 Answers
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