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Alter column, add default constraint
...e Default Constraints And How To Drop Default Constraint Without A Name In SQL Server
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How should I escape commas and speech marks in CSV files so they work in Excel?
...According to Yashu's instructions, I wrote the following function (it's PL/SQL code, but it should be easily adaptable to any other language).
FUNCTION field(str IN VARCHAR2) RETURN VARCHAR2 IS
C_NEWLINE CONSTANT CHAR(1) := '
'; -- newline is intentional
v_aux VARCHAR2(32000);
v_has_do...
Can Visual Studio 2012 be installed side-by-side w/ Visual Studio 2010?
...rectly modified by the 4.5 beta install), and uninstalling the plethora of SQL Server 2012 tools one by one. All after your previously working 4.0 code starts bombing out with an "Object Reference" error on a line that only contains a comment.
– mclark1129
Apr...
AutoMapper vs ValueInjecter [closed]
...er. I used it for a small part of my system where I map Entities with Linq2Sql generated classes. Simple mapping as StockTotalQuantity -> stock_size_quantity or UserId -> user_id did work with AutoMapper by default. It didn't work with ValeInjecter even after adding convetion. Sticking to Auto...
Forms authentication timeout vs sessionState timeout
... required to hold data in memory (or whatever backing store is being used, SQL Server, OutOfProc, etc) for a particular session. For example, if you put an object in Session using the value in your example, this data will be removed after 30 minutes. The user may still be authenticated but the data ...
How to compare dates in datetime fields in Postgresql?
...have been facing a strange scenario when comparing between dates in postgresql(version 9.2.4 in windows). I have a column in my table say update_date with type 'timestamp without timezone'. Client can search over this field with only date (i.e: 2013-05-03) or date with time (i.e: 2013-05-03 12:20:00...
How to define a custom ORDER BY order in mySQL
In MySQL how do I define a custom sorting order.
4 Answers
4
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What's the best practice for primary keys in tables?
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In some cases with SQL server 2005/2008 the natural (text) key can be faster than an int key. I have an app with a 7-8 character friendly code that we use as the primary key and that was faster (and often more convenient) than an int surrogate....
Avoid web.config inheritance in child web application using inheritInChildApplications
...ecause the keys AND values were always the same. Yesterday we updated our SQL connection strings to include the Application Name in the connection string. This made the string unique and all of sudden started to fail.
Without doing any research on the exact reason for this, I have to assume that ...
Getting vertical gridlines to appear in line plot in matplotlib
...id lines are appearing by default. I am using a pandas.DataFrame from an sql query in python to generate a line plot with dates on the x-axis. I'm not sure why they do not appear on the dates and I have tried to search for an answer to this but couldn't find one.
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