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Database Design for Tagging
... to rebuilt every time a question has a tag added or removed. A query like select * from question q inner join question_has_tag qt where tag_id in (select tag_id from tags where (what we want) minus select tag_id from tags where (what we don't) should be fine and scale out assuming the right b-tree ...
html select only one checkbox in a group
So how can I only allow a user to select only one checkbox?
16 Answers
16
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How do you open an SDF file (SQL Server Compact Edition)? [closed]
...t intuitive:
Open SQL Server Management Studio, or if it's running select File -> Connect Object Explorer...
In the Connect to Server dialog change Server type to SQL Server Compact Edition
From the Database file dropdown select < Browse for more...>
Open your SDF file.
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Code formatting shortcuts in Android Studio for Operation Systems
...System Settings → Keyboard → Shortcuts tab → System → Lock Screen.
Select the row New Accelerator..., then press any special key with the Alpha key (e.g. Shift + L). You should've successfully changed the keyboard shortcut.
Check if the keyboard shortcut now works in Android Studio.
Altern...
How to execute a bash command stored as a string with quotes and asterisk [duplicate]
...quotes.
MYSQL='mysql AMORE -u username -ppassword -h localhost -e'
QUERY="SELECT "'*'" FROM amoreconfig" ;# <-- "double"'single'"double"
eval $MYSQL "'$QUERY'"
Bonus: It also reads nice: eval mysql query ;-)
share
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Why can't radio buttons be “readonly”?
...ton by disabling only the un-checked radio buttons. It keeps the user from selecting a different value, and the checked value will always post on submit.
Using jQuery to make readonly:
$(':radio:not(:checked)').attr('disabled', true);
This approach also worked for making a select list readonly, ...
Replace duplicate spaces with a single space in T-SQL
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Even tidier:
select string = replace(replace(replace(' select single spaces',' ','<>'),'><',''),'<>',' ')
Output:
select single spaces
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How do I hide .class files from the Open Resource dialog in Eclipse?
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Right click on the project and select Properties
Expand Resource and click on Resource Filters
Click on Add Filter... to create a new filter
On the dialog box that opens
Select the Exclude all and Files radio buttons
Under File and Folder Attributes e...
How to insert text at beginning of a multi-line selection in vi/Vim
In Vim , how do I insert characters at the beginning of each line in a selection?
13 Answers
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Select records from NOW() -1 Day
... by >= NOW() -1 so all records from the day before today to the future are selected?
6 Answers
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