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Is having an 'OR' in an INNER JOIN condition a bad idea?
... of an immensely slow query (several minutes on two tables with only ~50,000 rows each, on SQL Server 2008 if it matters), I narrowed down the problem to an OR in my inner join, as in:
...
How can I create a keystore?
...elease-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000
Keytool prompts you to provide passwords for the keystore, provide the Distinguished Name fields and then the password for your key. It then generates the keystore as a file called my-release-key.keystore in the directo...
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...
Entity Framework code first unique column
...ight=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.14...
MySQL - ORDER BY values within IN()
...IELD(). We may have been using it incorrectly or on too big a dataset (~22,000 returned records) but just make sure you do your own benchmarking.
– Joshua Pinter
Sep 23 at 17:10
...
How to make unicode string with python3
...
This how I solved my problem to convert chars like \uFE0F, \u000A, etc. And also emojis that encoded with 16 bytes.
example = 'raw vegan chocolate cocoa pie w chocolate & vanilla cream\\uD83D\\uDE0D\\uD83D\\uDE0D\\u2764\\uFE0F Present Moment Caf\\u00E8 in St.Augustine\\u27...
Errors: “INSERT EXEC statement cannot be nested.” and “Cannot use the ROLLBACK statement within an I
...portant when it's called several times a second throughout the day and 100,000 times in a nightly process.
– Jason Goemaat
Aug 4 '14 at 21:06
...
Accessing items in an collections.OrderedDict by index
...Dict is only a tiny bit faster than items()[0]. With an OrderedDict of 10,000 entries, next(iter(d.items())) was about 200 times faster than items()[0].
BUT if you save the items() list once and then use the list a lot, that could be faster. Or if you repeatedly { create an items() iterator and ...
Advantages of Antlr (versus say, lex/yacc/bison) [closed]
... limitations.
ANTLR generated parsers are typically in the vicinity of 10.000 lines of code and more. Handwritten recursive descent parsers are often in the same ballpark. Wirth's Oberon compiler is perhaps the most compact one with about 4000 lines of code including code generation, but Oberon is ...
How to change checkbox's border style in CSS?
...: 0 0 2px #ccc;
}
label:hover span,
label:hover span
{
color: #000;
}
input[type="radio"] + span::before,
input[type="checkbox"] + span::before
{
content: "";
width: 12px;
height: 12px;
margin: 0 4px 0 0;
border: solid 1px #a8a8a8;
line-height: 14px;
...