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When to use MongoDB or other document oriented database systems? [closed]
...cal CRUD stuff. Storing what is essentially a huge hash, and being able to select on any of those keys, is what most people use a relational database for. If your DB is 3NF and you don’t do any joins (you’re just selecting a bunch of tables and putting all the objects together, AKA what most peo...
Using varchar(MAX) vs TEXT on SQL Server
...es ('b')
insert into @table values ('c')
insert into @table values ('d')
select *
from @table
where a ='a'
This give an error:
The data types text and varchar are incompatible in the equal to operator.
Wheras this does not:
declare @table table (a varchar(max))
Interestingly, LIKE still wo...
What is the difference between public, private, and protected?
... Not sure if the protected definition is correct here, from the actual selected answer it seems, Protected - Can be accessed only from the inherited class onwards and not from the original/parent class. Saying "WITHIN the class" can be a bit confusing.
– pal4life
...
What is the http-header “X-XSS-Protection”?
..." feature allows following attacks:
X-XSS-Protection: 1 allows attacker to selectively block parts of JavaScript and keep rest of the scripts running. This is possible because the heuristics of this feature are simply "if value of any GET parameter is found in the scripting part of the page source, ...
Inserting HTML into a div
....append('yourtHTML');
This will add your gallery as the last item in the selected div. Or:
$('#yourDivName').prepend('yourtHTML');
This will add it as the first item in the selected div.
See the JQuery docs for these functions:
http://api.jquery.com/append/
http://api.jquery.com/prepend/
...
What is the benefit of using “SET XACT_ABORT ON” in a stored procedure?
...h
declare @error int, @message varchar(4000), @xstate int;
select @error = ERROR_NUMBER(), @message = ERROR_MESSAGE(), @xstate = XACT_STATE();
if @xstate = -1
rollback;
if @xstate = 1 and @trancount = 0
rollback
if @xstate = 1 and @tran...
C# DLL config file
...n.GetType() == typeof(ConnectionStringsSection)
select section).FirstOrDefault() as ConnectionStringsSection;
if (connSection != null)
{
list.AddRange(connSection.ConnectionStrings.Cast<ConfigurationElement>());
}
}
/// &l...
Table fixed header and scrollable body
...ad (e) {
const el = e.target,
sT = el.scrollTop;
el.querySelectorAll("thead th").forEach(th =>
th.style.transform = `translateY(${sT}px)`
);
}
document.querySelectorAll(".tableFixHead").forEach(el =>
el.addEventListener("scroll", tableFixHead)
);
...
What is the difference between encode/decode?
...so the \u360 would be one character, not 5. Then you decode a string (with selected encoding) and get brand new object of the unicode type.
Just as a side note - you can select some pervert encoding, like 'zip', 'base64', 'rot' and some of them will convert from string to string, but I believe the ...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
...'','' quote ''"'' csv ', csv_file_path);
iter := 1;
col_first := (select col_1
from temp_table
limit 1);
-- update the column names based on the first row which has the column names
for col in execute format ('select unnest(string_to_array(trim(t...