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Mongoose populate after save
... post.populate('group', 'name').populate({
path: 'wallUser',
select: 'name picture'
}, function(err, doc) {
res.json(doc);
});
});
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...
String literals and escape characters in postgresql
...the escape string syntax for escapes, e.g., E'\r\n'.
INSERT 0 1
milen=> select * from EscapeTest;
text
------------------------
This will be inserted
This will not be
(1 row)
milen=>
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What are the main performance differences between varchar and nvarchar SQL Server data types?
... AND ([URLa] IS NULL OR [URLu] IS NULL))
);
In this model you only SELECT from the [URL] computed column. For inserting and updating, you determine which field to use by seeing if converting alters the incoming value, which has to be of NVARCHAR type:
INSERT INTO TableName (..., URLa, URLu)...
Integrating Dropzone.js into existing HTML form with other fields
... init: function () {
var submitButton = document.querySelector("#submit-all");
var wrapperThis = this;
submitButton.addEventListener("click", function () {
wrapperThis.processQueue();
});
this....
What size should TabBar images be?
...tabBarItem3.title = @"";
tabBarItem4.title = @"";
[tabBarItem1 setFinishedSelectedImage:[self imageWithImage:[UIImage imageNamed:@"item1-select.png"] scaledToSize:CGSizeMake(x, y)] withFinishedUnselectedImage:[self imageWithImage:[UIImage imageNamed:@"item1-deselect.png"] scaledToSize:CGSizeMake(x,...
Switch statement fallthrough in C#?
...# had not yet added any "soft" keywords (like 'yield', 'var', 'from', and 'select'), so they had three real options: 1) make 'fallthrough' a hard keyword (you cant use it as a variable name), 2) write code necessary to support such an soft keyword, 3) use already reserved keywords. #1 was a big issu...
Revert a range of commits in git
... commit included. But master~5 is actually 6th latest commit. See revision selection in git docs for detailed info about .. notation :-)
– Honza Haering
Feb 3 '17 at 15:09
add...
Rails 4 multiple image or file upload using carrierwave
How can I upload multiple images from a file selection window using Rails 4 and CarrierWave? I have a post_controller and post_attachments model. How can I do this?
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Count with IF condition in MySQL query
...
Use sum() in place of count()
Try below:
SELECT
ccc_news . * ,
SUM(if(ccc_news_comments.id = 'approved', 1, 0)) AS comments
FROM
ccc_news
LEFT JOIN
ccc_news_comments
ON
ccc_news_comments.news_id = ccc_news.news_id
WHERE
`ccc_...
Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...er=extmail password=extmail
default_pass_scheme = CRYPT
password_query = SELECT username AS user,password AS password FROM mailbox WHERE username = '%u'
user_query = SELECT maildir, uidnumber AS uid, gidnumber AS gid FROM mailbox WHERE username = '%u'
启动dovecot
service dovecot start
...