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Transaction isolation levels relation with locks on table
...ds the data under some condition i.e. WHERE aField > 10 AND aField < 20, A inserts data where aField value is between 10 and 20, then B reads the data again and get a different result.
SERIALIZABLE - lock on a full table(on which Select query is fired). This means, B reads the data and no othe...
How to update bower.json with installed packages?
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answered Jan 27 '14 at 22:50
Helder RobaloHelder Robalo
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Can't get rid of header X-Powered-By:Express
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248
In Express >= 3.0.0rc5:
app.disable('x-powered-by');
Here is a simple middleware that re...
LINQ: Not Any vs All Don't
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answered Jan 27 '12 at 0:52
Jon HannaJon Hanna
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how to exclude null values in array_agg like in string_agg using postgres?
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28
SQL Fiddle
select
id,
(select array_agg(a) from unnest(canonical_users) a where a is n...
Export database schema into SQL file
Is it possible in MS SQL Server 2008 to export database structure into a T-SQL file?
4 Answers
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The type or namespace name could not be found [duplicate]
I have a C# solution with several projects in Visual Studio 2010 .
One is a test project (I'll call it " PrjTest "), the other is a Windows Forms Application project (I'll call it " PrjForm "). There is also a third project referenced by PrjForm, which it is able to reference and use successfu...
Has reCaptcha been cracked / hacked / OCR'd / defeated / broken? [closed]
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92
+50
I notice ...
SQL Server NOLOCK and joins
... this exercise. Begin a transaction and insert a row into table1 and table2. Don't commit or rollback the transaction yet. At this point your first query will return successfully and include the uncommitted rows; your second query won't return because table2 doesn't have the WITH(NOLOCK) hint on...
Getting java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory exception
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25 Answers
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