You probably misunderstood/skipped point 4 in your list, Initialize MySQL. It means to either copy an existing data directory there or to create a new one, see Initializing the Data Directory Manually Using mysqld . To initialize a fresh data directory, you basically (after setting your config file) just have to run either or The … Read more
I’m using OS X (Yosemite) and this error happened to me when I upgraded from Mavericks to Yosemite. It was solved by using this command
I have not used Sequelize, but after reading its documentation, it’s obvious that you are instantiating a new object, that’s why Sequelize inserts a new record into the db. First you need to search for that record, fetch it and only after that change its properties and update it, for example:
Here is the solution: Login to DB; Run a command show full processlist;to get the process id with status and query itself which causes the database hanging; Select the process id and run a command KILL <pid>; to kill that process. Sometimes it is not enough to kill each process manually. So, for that we’ve to go with … Read more
from is a keyword in SQL. You may not used it as a column name without quoting it. In MySQL, things like column names are quoted using backticks, i.e. `from`. Personally, I wouldn’t bother; I’d just rename the column. PS. as pointed out in the comments, to is another SQL keyword so it needs to … Read more
As described in Cast Functions and Operators: The type for the result can be one of the following values: BINARY[(N)] CHAR[(N)] DATE DATETIME DECIMAL[(M[,D])] SIGNED [INTEGER] TIME UNSIGNED [INTEGER] Therefore, you should use:
http://dev.mysql.com/doc/refman/5.1/en/alter-table.html This will change the datatype of given column Depending on how many columns you wish to modify it might be best to generate a script, or use some kind of mysql client GUI
Definitely not a text field, but a varchar — perhaps. I wouldn’t recommend parsing the results and storing them in individual columns unless you want to take advantage of that data in database sense — statistics etc. If you never see yourself asking “What is the average volume that users use?” then don’t bother parsing it. To figure out … Read more
From what I can gather, the following should suffice, so long as the fields are what you have provided. EDIT (with Cursor) This should be pretty simple with a cursor, however I highly advise you familiarize yourself with these and the implications.
Use INSERT IGNORE INTO table. There’s also INSERT … ON DUPLICATE KEY UPDATE syntax, and you can find explanations in 13.2.6.2 INSERT … ON DUPLICATE KEY UPDATE Statement. Post from bogdan.org.ua according to Google’s webcache: 18th October 2007 To start: as of the latest MySQL, syntax presented in the title is not possible. But there … Read more