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Read data from SqlDataReader
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If you use indexes like reader.GetString(0) will it use the first column you selected in your query or the firstt column on the table. I have a table with 3 columns in order: ID, Dir, Email. My command selects dir and email. Will re...
How to design a product table for many kinds of product where each product has many parameters
...e blob back to the application and sort it out there." You can even create indexes on XML columns in SQL Server.
– Delphi.Boy
Oct 2 '14 at 6:48
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How do I find the caller of a method using stacktrace or reflection?
...ber() and getMethodName().
You will have to experiment to determine which index you want
(probably stackTraceElements[1] or [2]).
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Big O, how do you calculate/approximate it?
...size N.
The for statement on the sentence number one is tricky. While the index ends at 2 * N, the increment is done by two. That means that the first for gets executed only N steps, and we need to divide the count by two.
f(N) = Summation(i from 1 to 2 * N / 2)( ... ) =
= Summation(i from 1...
Set selected item of spinner programmatically
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Use the following:
spinnerObject.setSelection(INDEX_OF_CATEGORY2).
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Where does forever store console.log output?
...s Lists log files for all forever processes
logs <script|index> Tails the logs for <script|index>
Sample output of the above command, for three processes running. console.log output's are stored in these logs.
info: Logs for running Forever processes
data: scr...
Inserting multiple rows in a single SQL query? [duplicate]
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@ahnbizcad Semicolons in T-sql are USUALLY optional, but they are reported to be required in the future. You should get yourself in the habit of using them to terminate each statement--your code will look nicer too IMO.
– NReilingh
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How do I delete unpushed git commits?
...et HEAD~1 will also keep all your changes but will leave you with an empty index rather than keep everything (as the --soft option would).
– Holloway
Aug 27 '14 at 10:05
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Use email address as primary key?
...when trying to track down data problems.
You almost certainly will need an index on the email address anyway, so making it the primary key eliminates one index, thus improving the performance of inserts as they now have only one index to update instead of two.
In my humble opinion, it's not a slam...
SQL select only rows with max value on a column [duplicate]
... performance friendly, however your mileage may vary (RDBMS, DB Structure, Indexes, etc.). So when you pick one approach over the other, benchmark. And make sure you pick the one which make most of sense to you.
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