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Can\'t connect to local MySQL server through socket \'/tmp/mysql.sock\...
Can't connect to local MySQL server through socket '/tmp/mysql.sock'ln -s var lib mysql mysql.sock tmp mysql.sock 建个link即可，不解释。
ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
建个link即可，不解释。MySQL mysql.sock
mysql: see all open connections to a given database?
With administrative permissions im mysql, how can I see all the open connections to a specific db in my server?
8 Answers
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How to create relationships in MySQL
... to do what the rest of the class is doing, but with raw SQL commands with MySQL instead of using Access.
8 Answers
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Set value to NULL in MySQL
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You're probably quoting 'NULL'. NULL is a reserved word in MySQL, and can be inserted/updated without quotes:
INSERT INTO user (name, something_optional) VALUES ("Joe", NULL);
UPDATE user SET something_optional = NULL;
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How to find Unused Amazon EC2 Security groups
... from complete. So I decided to write my own script. I used the AWS CLI, MySQL and some “Bash-foo” to perform the following:
Get a list of all EC2 security groups.
I store the group-id, group-name and description in a tabled called “groups” in a MySQL database called aws_security_groups ...
Get Insert Statement for existing row in MySQL
Using MySQL I can run the query:
15 Answers
15
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Which ORM should I use for Node.js and MySQL? [closed]
I'm rewriting a project to use Node.js. I'd like to keep using MySQL as the DB (even though I don't mind rewriting the schema).
I'm looking for a simple-to-use, reasonable-performance ORM, which supports caching, many-to-one and many-to-many relations.
From the MySQL ORMs I could find, persistencej...
How to select date from datetime column?
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You can use MySQL's DATE() function:
WHERE DATE(datetime) = '2009-10-20'
You could also try this:
WHERE datetime LIKE '2009-10-20%'
See this answer for info on the performance implications of using LIKE.
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Is there a simple way to convert C++ enum to string?
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I love this solution. It would be clearer if SOME_UNION and MAKE_UNION were called SOME_ENUM and MAKE_ENUM, though.
– Bruno Martinez
Jan 8 '13 at 14:26
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Best way to test if a row exists in a MySQL table
I'm trying to find out if a row exists in a table. Using MySQL, is it better to do a query like this:
12 Answers
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