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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
...ing constraints based on lets say: name and lastname and you wanted to add one more unique constraint, you had to drop the entire constrain by:
ALTER TABLE your_table DROP CONSTRAINT constraint_name;
Make sure tha the new constraint you wanted to add is unique/ not null ( if its Microsoft Sql, it...
is of a type that is invalid for use as a key column in an index
...ead of nvarchar (e.g. if you don't need to store characters from more than one codepage) then that could increase to 900 characters.
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Difference in months between two dates
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I think it is necessary to consider Day component. Something like this (date1.Year - date2.Year) * 12 + date1.Month - date2.Month + (date1.Day >= date2.Day ? 0 : -1)
– DrunkCoder
Nov 21 '12 at 22:04
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How can I make a JUnit Test wait?
... rely on timing (use mocks) or use libraries such as Awaitility for asynchroneous testing.
– FuryFart
Mar 14 '19 at 15:07
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List tables in a PostgreSQL schema
...ified in Section 9.7.3, except for . which is taken as a separator as mentioned above, * which is translated to the regular-expression notation .*, ? which is translated to ., and $ which is matched literally. You can emulate these pattern characters at need by writing ? for ., (R+|) for R*, or (R|)...
What does (function($) {})(jQuery); mean?
...e line into all my plugins without actually knowing what it means. Can someone tell me a little more about these? Perhaps an explanation will come in handy someday when writing a framework :)
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Spring .properties file: get element as an Array
...ring> in the same fashion doesn't seem to work (the list will have just one element).
– Jonik
May 29 '13 at 8:36
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Why does (“foo” === new String(“foo”)) evaluate to false in JavaScript?
... your case, === returns false because the operands are of different types (one is a primitive and the other is an object).
Primitives are not objects at all.
The typeof operator will not return "object" for primitives.
When you try to access a property of a primitive (using it as an object), the...
How to configure static content cache per folder and extension in IIS7?
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Does anyone know if this is recursive? e.g. If you have sub folders under you images path, will it also cache those?
– StuffandBlah
Jun 28 '12 at 7:47
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PHP Regex to get youtube video ID?
Can someone show me how to get the youtube id out of a url regardless of what other GET variables are in the URL.
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