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How to 'insert if not exists' in MySQL?
...accomplish what is
expected using existing functionality.
There are 3 possible solutions: using INSERT IGNORE, REPLACE, or
INSERT … ON DUPLICATE KEY UPDATE.
Imagine we have a table:
CREATE TABLE `transcripts` (
`ensembl_transcript_id` varchar(20) NOT NULL,
`transcript_chrom_start` i...
Why does only the first line of this Windows batch file execute but all three lines execute in a com
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306
Maven uses batch files to do its business. With any batch script, you must call another scrip...
How can I get the console logs from the iOS Simulator?
...You can either use the Console.app to see this, or just do a tail (iOS 7.0.3 64 bits for example):
tail -f ~/Library/Logs/iOS\ Simulator/7.0.3-64/system.log
EDIT 2:
They are now located in ~/Library/Logs/CoreSimulator/<simulator-hash>/system.log
tail -f ~/Library/Logs/CoreSimulator/<sim...
When exactly is it leak safe to use (anonymous) inner classes?
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3 Answers
3
Active
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How do I join two SQLite tables in my Android application?
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pawelziebapawelzieba
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Why can I use auto on a private type?
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113
The rules for auto are, for the most part, the same as for template type deduction. The example ...
Make an existing Git branch track a remote branch?
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4327
Given a branch foo and a remote upstream:
As of Git 1.8.0:
git branch -u upstream/foo
Or, if ...
MySQL - force not to use cache for testing speed of query
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537
Try using the SQL_NO_CACHE (MySQL 5.7) option in your query.
(MySQL 5.6 users click HERE )
eg....
encryption/decryption with multiple keys
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answered Feb 28 '09 at 0:34
David SegondsDavid Segonds
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How to open a file for both reading and writing?
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answered Apr 12 '13 at 16:04
FlimmFlimm
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