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How to create relationships in MySQL
...e innodb you can create it like this:
CREATE TABLE accounts(
account_id INT NOT NULL AUTO_INCREMENT,
customer_id INT( 4 ) NOT NULL ,
account_type ENUM( 'savings', 'credit' ) NOT NULL,
balance FLOAT( 9 ) NOT NULL,
PRIMARY KEY ( account_id ),
FOREIGN KEY (customer_id) REFERE...
Take a full page screenshot with Firefox on the command-line
...hich enables you to save a complete page opened in your browser into a png file. Most probably you are looking for a utility like commandlineprint2.
After installing the extension, you just need to type the command:
firefox -print http://google.com -printfile ~/foo.png
...
How can I get a channel ID from YouTube?
...m my channel using the YouTube Data API V3 .
For that I need my channel ID.
I've tried to find my channel ID from my YouTube account, and I failed in every single way.
If anyone have a single tip for me, I would be incredible glad.
...
Need to list all triggers in SQL Server database with table name and table's schema
...
SELECT
sysobjects.name AS trigger_name
,USER_NAME(sysobjects.uid) AS trigger_owner
,s.name AS table_schema
,OBJECT_NAME(parent_obj) AS table_name
,OBJECTPROPERTY( id, 'ExecIsUpdateTrigger') AS isupdate
,OBJECTPROPERTY( id, 'ExecIsDeleteTrigger') AS isdelete
,OBJ...
How to use git merge --squash?
...ontaining all commit messages you squashed. In that case, try git commit --file .git/SQUASH_MSG (via stackoverflow.com/a/11230783/923560 ).
– Abdull
Jun 3 '16 at 16:02
25
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What is the HEAD in git?
... to be a difference between the last commit, the HEAD and the state of the file I can see in my directory.
5 Answers
...
mongodb group values by multiple fields
...ems to $push to an array.
db.books.aggregate([
{ "$group": {
"_id": {
"addr": "$addr",
"book": "$book"
},
"bookCount": { "$sum": 1 }
}},
{ "$group": {
"_id": "$_id.addr",
"books": {
"$push": {
"...
How can one print a size_t variable portably using the printf family?
...the C++1x draft (highly unlikely), or you'll need to move your code into a file that's compiled as C99. Otherwise, your only option is to cast your variables to unsigned long long and use %llu to be maximally portable.
– Adam Rosenfield
Apr 13 '10 at 1:52
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YouTube Video Embedded via iframe Ignoring z-index?
...
}
}
}
</script>
I load it in the footer.php Wordpress file. Code found in comment here (thanks Gerson)
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Xcode 4.2 - declaration of '…' will not be visible outside of this function warning
...n of the missing struct. Add a single "struct sockaddr_in;" line to the .h file
– fishinear
Nov 6 '12 at 17:33
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