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An application I inherited tracks lab test results performed on material samples. Data is stored in a single table (tblSampleData) with a primary key of SampleID and 235 columns representing potential
I\'ve got the following SQL table: CREATE TABLE [dbo].[Test]( [Test开发者_如何学CID] [int] NOT NULL,
In VB.NET, what is the difference between if foo is Nothing Then doStuff() End If and if foo=Nothing Then doStuff()
according to the documentation, the method String.valueOf(Object obj) returns: if the argument is null, then a string equal to \"null\"; otherwise, the value of obj.toString() is returned.
This seems odd to me -- VB.NET handles the null check implicitly via its RaiseEvent keyword. It seems to raise the amount of boilerplate around events consider开发者_如何转开发ably and I don\'t see wh
This question already has answers here: Closed 10开发者_如何学运维 years ago. Possible Duplicate:
Is there a default method defined in 开发者_StackOverflow社区.Net for C# to remove all the elements within a list which are null?
I have noticed that if I have a unique compound keys for two columns, column_a and column_b, then my sql ignores this constraint if one column is null.
I have been programming iPhone SDK for around 6 months but am a bit confused about a couple of things...one of which I am asking here:
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