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When should I use a composite index?
...he tables in a query (Exemptions are there. eg, Merging of indexes). Which ideally means that a table in a query, must use a single index for all where-clause, table join, group-by and order-by. So a separate index on each column may not work always but a composite index can do the magic.
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Using MySQL with Entity Framework [closed]
...dio integration. That functionality is now available in a separate product called MySQL for Visual Studio available using the MySQL Installer for Windows (see http://dev.mysql.com/tech-resources/articles/mysql-installer-for-windows.html).
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View/edit ID3 data for MP3 files
What's a quick and easy way to view and edit ID3 tags (artist, album, etc.) using C#?
6 Answers
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Connection timeout for SQL server
...doubt that's really the issue.
When you get connection timeouts, it's typically a problem with one of the following:
Network configuration - slow connection between your web server/dev box and the SQL server. Increasing the timeout may correct this, but it'd be wise to investigate the underlying ...
How to redirect output with subprocess in Python?
...open(my_cmd, shell=True)
os.waitpid(p.pid, 0)
OTOH, you can avoid system calls entirely:
import shutil
with open('myfile', 'w') as outfile:
for infile in ('file1', 'file2', 'file3'):
shutil.copyfileobj(open(infile), outfile)
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Wait for a void async method
... blah is obviously returning task and ha async signature why would you call it without await. even VS will give you warning about it.
– batmaci
Feb 27 '19 at 16:59
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PadLeft function in T-SQL
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I believe this may be what your looking for:
SELECT padded_id = REPLACE(STR(id, 4), SPACE(1), '0')
FROM tableA
or
SELECT REPLACE(STR(id, 4), SPACE(1), '0') AS [padded_id]
FROM tableA
I haven't tested the syntax on the 2nd example. I'm not sure if that works 100% - it may requ...
How do I get Gridview to render THEAD?
...ds to go on Page_Load or GridView_PreRender. I put it in a method that was called after Page_Load and got a NullReferenceException.
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How to select the last record of a table in SQL?
...e can do is something like
Sql Server
SELECT TOP 1 * FROM Table ORDER BY ID DESC
MySql
SELECT * FROM Table ORDER BY ID DESC LIMIT 1
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Segmentation fault on large array sizes
... size of your local variables subtracted from the stack pointer. When you call malloc or calloc or any of the memory fuctions the fuctions go and find blocks of memory large enough to sataisfy your reqest.
– rerun
Dec 4 '09 at 16:12
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