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SQL SELECT speed int vs varchar
...s I know this is an old post but can I kindly check...on the following: in order to query integers, i have to link each string column to another table (relationship). however, that means more joining operations are required for each query. How do i determine if this trade-off is worth it? Thank you!...
Why do we need fibers
...one more thing you can do with Enumerators: they allow you to apply higher-order Enumerable methods to other iterators other than each. Think about it: normally all the Enumerable methods, including map, select, include?, inject, and so on, all work on the elements yielded by each. But what if an ob...
What is RSS and VSZ in Linux memory management
...79087] mongod invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0
So we see that interestingly it was the MongoDB daemon that always runs in my laptop on the background that first triggered the OOM killer, presumably when the poor thing was trying to allocate some...
Select top 10 records for each category
...ield1,Field2, Rank()
over (Partition BY Section
ORDER BY RankCriteria DESC ) AS Rank
FROM table
) rs WHERE Rank <= 10
If your RankCriteria has ties then you may return more than 10 rows and Matt's solution may be better for you.
...
Right way to initialize an OrderedDict using its constructor such that it retains order of initial d
What's the correct way to initialize an ordered dictionary (OD) so that it retains the order of initial data?
2 Answers
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What are the best PHP input sanitizing functions?
...tions to make your data a bit safer. That's fine. Your mistake is in the order of operations, and how and where to use these functions.
It's important to understand the difference between sanitizing and validating user data, escaping data for storage, and escaping data for presentation.
Sanitizing...
How can I remove the first line of a text file using bash/sed script?
...istopherSahnwaldt -- tail is much, much slower than the sed variant, by an order of magnitude. I'm testing it on a file of 500,000K lines (no more than 50 chars per line). However, I then realized I was using the FreeBSD version of tail (which comes with OS X by default). When I switched to GNU tail...
How do I run a shell script without using “sh” or “bash” commands?
...ause when we run it from the terminal we will only need to type myShell in order to run our command!
Now, in nano the top line MUST be #!/bin/bash then you may leave a new line before continuing.
For demonstration I will add a basic Hello World! response
So, I type the following:
echo Hello World!
...
Alphabet range in Python
...
Thanks. How do I make it to reverse order?
– Alexa Elis
Apr 17 '13 at 13:08
68
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What's the difference between a temp table and table variable in SQL Server?
...) ([4CA996AC-C7E1-48B5-B48A-E721E7A435F0])
SELECT TOP 9 ROW_NUMBER() OVER (ORDER BY (SELECT 0))
FROM sys.all_columns
BEGIN TRAN InsertFailure
SAVE TRAN InsertFailure
COMMIT
/*Try and Insert 10 rows, the 10th one will cause a constraint violation*/
BEGIN TRY
INSERT INTO $(tablename) ([4CA996AC-C7E...