大约有 47,000 项符合查询结果（耗时：0.0471秒） [XML]
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...CIT) and (utf8_unicode_ci,IMPLICIT) for operation '='
$this->db->select("users.username as matric_no, CONCAT(users.surname,
' ',
users.first_name, ' ', users.last_name) as fullname")
->join('users', 'users.username=classroom_students.matric_no', 'left')
...
Xcode 4 hangs at “Attaching to (app name)”
... tip is to navigate to the Organizer (Shift ⇧ Command ⌘ 2 in xcode 4), select Projects, select you application in the left hand side and then the Delete...-button to the right of Derived Data.
And never forget the universally useful tip: restart your computer and try again.
Good luck!
...
How to Store Historical Data
...erform an insert statement into FOO_Hist similar to: insert into FOO_HIST select * from FOO where id = @id .
13 Answers
...
How to retrieve the current version of a MySQL database management system (DBMS)?
... and Windows.
When connected to a MySQL server with a client you can use
select version()
or
select @@version
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What Java ORM do you prefer, and why? [closed]
...ay give jOOQ a try. You'll love it! :-)
Check out this example SQL:
// Select authors with books that are sold out
SELECT *
FROM T_AUTHOR a
WHERE EXISTS (SELECT 1
FROM T_BOOK
WHERE T_BOOK.STATUS = 'SOLD OUT'
AND T_BOOK.AUTHOR_ID ...
Get attribute name value of
... that you were able to add an ID attribute to your element and use that to select it.
With that in mind, here are two pieces of code. First, the code given to you in the Accepted Answer:
$("#ID").attr("name");
And second, the Vanilla JS version of it:
document.getElementById('ID').getAttribute(...
How to add external library in IntelliJ IDEA?
...ect top level, refresh/synchronize)
Expand libs and right click on the jar
Select "Add as Library"
Done
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Rails find record with zero has_many records associated [duplicate]
..._joins(:photos).where(photos: {id: nil})
which will result in SQL like:
SELECT cities.*
FROM cities LEFT OUTER JOIN photos ON photos.city_id = city.id
WHERE photos.id IS NULL
Using includes:
City.includes(:photos).where(photos: {id: nil})
will have the same result, but will result in much ug...
How to insert a value that contains an apostrophe (single quote)?
... 'O''Brien')
/\
right here
The same applies to SELECT queries:
SELECT First, Last FROM Person WHERE Last = 'O''Brien'
The apostrophe, or single quote, is a special character in SQL that specifies the beginning and end of string data. This means that to use it as part...
Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障 - 数据库(内核) - ...
...AC_Deployment_Guide.pdf
最佳配置文档第17页
In the device list, select SCSI controller 1
In the SCSI Bus Sharing section, select None,keep the default selection.
In the SCSI Controller Type section, click Change Type.
Select VMware Paravirtual.
Click OK, and click OK again.
Add confi...