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How can I add a column that doesn't allow nulls in a Postgresql database?
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You have to set a default value.
ALTER TABLE mytable ADD COLUMN mycolumn character varying(50) ...
Creating an empty file in C#
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Jon SkeetJon Skeet
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What's the _ underscore representative of in Swift References?
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edited Aug 5 '15 at 14:53
Chad Nouis
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How to use a wildcard in the classpath to add multiple jars? [duplicate]
... in the current directory.
This should work in Java6, not sure about Java5
(If it seems it does not work as expected, try putting quotes. eg: "foo/*")
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How does password salt help against a rainbow table attack?
...ns hundreds of usernames and passwords. Without a salt, I could compute "md5(attempt[0])", and then scan through the file to see if that hash shows up anywhere. If salts are present, then I have to compute "md5(salt[a] . attempt[0])", compare against entry A, then "md5(salt[b] . attempt[0])", compar...
Java String array: is there a size of method?
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Dave Newton
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answered May 28 '09 at 15:17
KrisKris
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Can an html element have multiple ids?
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answered Oct 10 '08 at 16:09
timmowtimmow
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What is the difference between a web API and a web service?
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edited Oct 29 '18 at 11:55
Menuka Ishan
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answered Oct 13 '13 ...
Override intranet compatibility mode IE8
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edited Aug 5 '16 at 18:33
Blexy
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Passing properties by reference in C#
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answered Sep 10 '09 at 1:55
Nathan BaulchNathan Baulch
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