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SQL multiple column ordering
... @NickBenes ...or you could say: it sorts by column2 and then performs STABLE sorting by column1. This is more clear for people that knows what stable sorting is.
– Atom
Oct 3 '16 at 13:49
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Only one expression can be specified in the select list when the subquery is not introduced with EXI
...r side of the IN. So the query needs to be of the form:
SELECT * From ThisTable WHERE ThisColumn IN (SELECT ThatColumn FROM ThatTable)
You also want to add sorting so you can select just from the top rows, but you don't need to return the COUNT as a column in order to do your sort; sorting in the...
Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
...o which a VARCHAR's length can be extended through the use of online ALTER TABLE. Consequently, I derived those numbers by creating a table with a varchar(2) charset utf8 column and seeing how far I was able to extend it given ALGORITHM=INPLACE.
– antak
Apr 11...
How to check if a process is running via a batch script
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Changing the tasklist format to CSV or anything but table is important because it tasklist default layout (table) truncates long image names which breaks the logic.
– Scott White
Jun 22 '11 at 14:56
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UITableView, Separator color where to set?
I have added a UITableView in IB and set the "delegate" and "datasource" and all is working well. What I wanted to do next was change the separator color, but the only way I could find to do this was to add the method to one of the delegate callbacks, is there a better place I should put this?
...
How to use multiple AWS Accounts from the command line?
...n the accounts by passing the profile on the command.
$ aws dynamodb list-tables --profile account1
$ aws s3 ls --profile account2
Note:
If you name the profile to be default it will become default profile i.e. when no --profile param in the command.
More on default profile
If you spend mor...
Display string as html in asp.net mvc view
...ripped out, with just the non-tag content remaining. I particularly had a table with a missing opening table tag, and then all my html tags from the entire string where ripped out completely.
So, if the above doesn't work, and you're still scratching your head, then also check you html for being v...
Bootstrap 3 Flush footer to bottom. not fixed
...gt;
</footer>
CSS
html,
body { height: 100%; }
body {
display: table;
width: 100%;
}
.page-row {
display: table-row;
height: 1px;
}
.page-row-expanded { height: 100%; }
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How do I find duplicates across multiple columns?
...V 8.0 introduced "window functions", as seen below (in MySQL 8.0)
CREATE TABLE stuff(
id INTEGER NOT NULL
,name VARCHAR(60) NOT NULL
,city VARCHAR(60) NOT NULL
);
INSERT INTO stuff(id,name,city) VALUES
(904834,'jim','London')
, (904835,'jim','London')
, (90145,'Fred','Paris')
, (9...
Using global variables in a function
... natural place for global data:
Each module has its own private symbol table, which is used as the global symbol table by all functions defined in the module. Thus, the author of a module can use global variables in the module without worrying about accidental clashes with a user’s global vari...