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insert a NOT NULL column to an existing table
...en you run this code on Microsoft SQL server. If you want to perform the same operation on Oracle or MySQL you need to use semicolon ; like that:
ALTER TABLE MY_TABLE ADD STAGE INT NULL;
UPDATE MY_TABLE SET <a valid not null values for your column>;
ALTER TABLE MY_TABLE ALTER COLUMN STAGE INT...
How to rename a table in SQL Server?
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To rename a table in SQL Server, use the sp_rename command:
exec sp_rename 'schema.old_table_name', 'new_table_name'
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Reason for Column is invalid in the select list because it is not contained in either an aggregate f
...t in standard SQL, each column should contain only one value. That's fundamental to relational theory too.
– Bill Karwin
Dec 22 '12 at 16:45
36
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Disable a group of tests in rspec?
...3 you can:
before { skip }
# or
xdescribe
# or
xcontext
You can add a message with skip that will show up in the output:
before { skip("Awaiting a fix in the gem") }
with RSpec 2:
before { pending }
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How to var_dump variables in twig templates?
... Twig 1.5, the correct answer is to use the dump function. It is fully documented in the Twig documentation. Here is the documentation to enable this inside Symfony2.
{{ dump(user) }}
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How do you test a public/private DSA keypair?
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I found a way that seems to work better for me:
ssh-keygen -y -f <private key file>
That command will output the public key for the given private key, so then just compare the output to each *.pub file.
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Select all contents of textbox when it receives focus (Vanilla JS or jQuery)
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$(document).ready(function() {
$("input:text").focus(function() { $(this).select(); } );
});
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Detecting design mode from a Control's constructor
... this question , is it possible to detect whether one is in design or runtime mode from within an object's constructor?
14 ...
Join a list of items with different types as string in Python
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Calling str(...) is the Pythonic way to convert something to a string.
You might want to consider why you want a list of strings. You could instead keep it as a list of integers and only convert the integers to strings when you need to display them. For example, if you have...
How to determine if a number is odd in JavaScript
Can anyone point me to some code to determine if a number in JavaScript is even or odd?
27 Answers
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