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UPDATE multiple tables in MySQL using LEFT JOIN
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See the article in my blog for performance details:
Finding incomplete orders: performance of LEFT JOIN compared to NOT IN
Unfortunately, MySQL does not allow using the target table in a subquery in an UPDATE statement, that's why you'll need to stick to less efficient LEFT JOIN synta...
Delete text in between HTML tags in vim?
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Hibernate lazy-load application design
I tend to use Hibernate in combination with Spring framework and it's declarative transaction demarcation capabilities (e.g., @Transactional ).
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Difference between Django's annotate and aggregate methods?
...ias51 that's really related to the original question, so I don't think the comments on an eight-year-old question is the best place to ask. If you want to check when the queries run, then you can check connection.queries. Hint: check whether it's the book = q[0] or ` book.num_authors` that causes th...
How to create a new java.io.File in memory?
...my opinion. However i think that an in-memory filesystem (mentioned in the comments of Andreas’ answer) could also be mentioned, because if you cant for some reason write to the hard-drive, then that could be a way around it.
– FableBlaze
Jan 17 at 12:19
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VIM ctrlp.vim plugin: how to rescan files?
I have come across the awesome ctrlp.vim plugin . It is a good alternative to the Command-T plugin which I have used before. What I did not like about Command-T is that it would take about 20-30 seconds to rescan files when it is invoked for the first time after starting vim.
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How to push new branch without history
...w_branch>, started from <start_point> and switch to it. The first commit made on this new branch will have no parents and it will be the root of a new history totally disconnected from all the other branches and commits.
The index and the working tree are adjusted as if you had previously r...
Copy all files with a certain extension from all subdirectories
... files) from all subdirectories to another directory. I have the following command:
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Cmake vs make sample codes?
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Here is a CMakeLists.txtthat does (almost) exactly the same, with some comments to underline the
similarities to the Makefile:
#CMakeLists.txt
cmake_minimum_required(VERSION 2.8) # stuff not directly
project(example) # related to buil...
Send an Array with an HTTP Get
... edited May 23 '17 at 12:10
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answered Jun 17 '10 at 11:40
BalusCBalusC
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