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How to assign an exec result to a sql variable?
...T CONVERT(char(23),@OutputParameter ,121)
OUTPUT:
0
2010-01-01 00:00:00.000
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Set operations (union, intersection) on Swift array?
...have N possible numbers and need to make sets of them. For example, N=100,000 and want to make sets like {1,2,3}, {5, 88, 19000} etc.
The idea is to keep the list of N prime numbers in memory and for a given set {a, b, c, ...} you encode it as
prime[a]*prime[b]*prime[c]*...
So you encode a set...
Get records with max value for each group of grouped SQL results
..., it started getting reported in the slow query log when attempted with 10,000+ rows sharing same ID. Was JOINing on indexed column. A rare case, but figured it's worth mentioning.
– chaseisabelle
Jul 26 '16 at 18:17
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HTML.ActionLink vs Url.Action in ASP.NET Razor
... Url.Action is much more performat than Html.ActionLink. I had a list of 6,000 items that had 2 Html.ActionLinks. It took 6,600ms to render the list. Without the Html.ActionLinks it took 52ms. Using Url.Action it took 270ms. Granted, 6000 items is a large list, but thought I'd add it for future refe...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
... a lot of performance issues when dealing with large datasets(larger than 5000 rows with lots of columns). Currently doing a heavy modification of the code base at work so we can use it in a project.
– rossisdead
Oct 18 '11 at 23:17
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Make Div overlay ENTIRE page (not just viewport)?
...p://jsbin.com/okabo3/edit
div.fadeMe {
opacity: 0.5;
background: #000;
width: 100%;
height: 100%;
z-index: 10;
top: 0;
left: 0;
position: fixed;
}
<body>
<div class="fadeMe"></div>
<p>A bunch of content here...</...
LIKE vs CONTAINS on SQL Server
... Well am looking at an actual execution plan fetching over 200,000 records. Putting both queries in a batch, both scanned the clustered index, but in addition the "CONTAINS" query does have an added cost of FULL TEXT MATCH and a MERGE JOIN.
– MI C
M...
What are OLTP and OLAP. What is the difference between them?
...more data).
It's a bit more involved than that of course and that's a 20 000 feet overview of how databases differ, but it allows me not to get lost in a sea of acronyms.
Speaking of acronyms:
OLTP = Online transaction processing
OLAP = Online analytical processing
To read a bit further, here...
MySql Table Insert if not exist otherwise update
...edData (datenum,Timestamp)
VALUES ("734152.979166667","2010-01-14 23:30:00.000")
ON DUPLICATE KEY UPDATE
Timestamp=VALUES(Timestamp)
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Can vim monitor realtime changes to a file
... isn't moved by the user for the time specified in 'updatetime' (which is 4000 miliseconds by default) checktime is executed, which checks for changes from outside the file
- call feedkeys("lh"): the cursor is moved once, right and back left. and then nothing happens (... which means, that CursorHol...