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Rails 3 execute custom sql query without a model
...o_hash
From the docs:
result = ActiveRecord::Base.connection.exec_query('SELECT id, title, body FROM posts')
result # => #<ActiveRecord::Result:0xdeadbeef>
# Get the column names of the result:
result.columns
# => ["id", "title", "body"]
# Get the record values of the result:
result...
How are 3D games so efficient? [closed]
... draw things that can't be seen. Consider a complex scene like a cityscape from Grand Theft Auto IV. The renderer isn't actually rendering all of the buildings and structures. Instead, it's rendering only what the camera can see. If you could fly around to the back of those same buildings, facing th...
Modify table: How to change 'Allow Nulls' attribute from not null to allow null
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I wrote this so I could edit all tables and columns to null at once:
select
case
when sc.max_length = '-1' and st.name in ('char','decimal','nvarchar','varchar')
then
'alter table [' + so.name + '] alter column [' + sc.name + '] ' + st.name + '(MAX) NULL'
when st.name in ('char','decimal','n...
Dynamic SQL - EXEC(@SQL) versus EXEC SP_EXECUTESQL(@SQL)
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EXEC('SELECT * FROM FOO WHERE ID=?', 123) will replace the parameter placeholder "?" with the value 123 and then execute the query, returning a result for SELECT * FROM FOO WHERE ID=123
– Peter Wone
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How to make input type= file Should accept only pdf and xls
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if you list all files on selection box. you can still uploading any file.
– rüff0
Jan 5 '19 at 15:35
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How to replace a string in a SQL Server Table Column
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all answers are great but I just want to give you a good example
select replace('this value from table', 'table', 'table but updated')
this SQL statement will replace the existence of the word "table"
(second parameter) inside the given statement(first parameter) with the third paramete...
.bashrc/.profile is not loaded on new tmux session (or window) — why?
...ve any idea why is this happening? I suddenly noticed this after upgrading from Ubuntu 16.04 to 18.04.2. This is the only difference I can think of. Also, I noticed that some of the configurations broke and I had to comply to some new syntax (seems like tmux got updated as well, but I don't remember...
Javascript: How to loop through ALL DOM elements on a page?
... // Do something with the element here
}
Note that you could use querySelectorAll(), if it's available (IE9+, CSS in IE8), to just find elements with a particular class.
if (document.querySelectorAll)
var clsElements = document.querySelectorAll(".mySpeshalClass");
else
// loop through a...
File Explorer in Android Studio
...en robot icon on the toolbar, to the left of the help icon). From the ADM, select the device/emulator, then select the File Explorer tab.
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console.log timestamps in Chrome?
...2) > click the three-dot menu in the top right > click settings > select Preferences in the left menu > check show timestamps in the Console section of the settings screen (top right)
– tekiegirl
Sep 4 '18 at 9:52
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