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How do I use an INSERT statement's OUTPUT clause to get the identity value?
...u can use this also from e.g. C#, when you need to get the ID back to your calling app - just execute the SQL query with .ExecuteScalar() (instead of .ExecuteNonQuery()) to read the resulting ID back.
Or if you need to capture the newly inserted ID inside T-SQL (e.g. for later further processing), ...
SQLite UPSERT / UPDATE OR INSERT
... Why is that a bad thing? And if the data hasn't changed, why are you calling UPSERT in the first place? But even so, it's a good thing the update happens, setting Changes=1 or else the INSERT statement would incorrectly fire, which you don't want it to.
– Mark A. Donohoe...
How do you write a migration to rename an ActiveRecord model and its table in Rails?
... you want to use the plural version of your table name in the rename_table call.
– Han
Sep 20 '12 at 5:37
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Difference between “read commited” and “repeatable read”
...nd it could see different rows based on COMMITTED only B writing. could we call it Simple Lock?
RepeatableRead: Transaction B will read the same data (rows) whatever Transaction A is doing. But Transaction A can change other rows. Rows level Block
Serialisable: Transaction B will read the same rows ...
Refresh image with a new one at the same url
..." + new Date().getTime();
This will append the current timestamp automatically when you are creating the image, and it will make the browser look again for the image instead of retrieving the one in the cache.
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Importing variables from another file?
...le1.x1 have the same value, they are not the same variables. For instance, call a function in file1 that modifies x1 and then try to print the variable from the main file: you will not see the modified value.
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Get button click inside UITableViewCell
... sure your buttons tag is set. You really don't want to mix up your action calling. Either do it through IB or do it explicitly in your code.
– Sententia
Apr 29 '14 at 7:12
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What should I do if the current ASP.NET session is null?
...uireRequestState runs before control is handed to your Page. So if you are calling other functionality, including static classes, from your page, you should be fine.
If you have some classes doing initialization logic during startup, for example on the Application_Start event or by using a static co...
LINQ to SQL - Left Outer Join with multiple join conditions
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You need to introduce your join condition before calling DefaultIfEmpty(). I would just use extension method syntax:
from p in context.Periods
join f in context.Facts on p.id equals f.periodid into fg
from fgi in fg.Where(f => f.otherid == 17).DefaultIfEmpty()
where p.c...
How to declare a variable in MySQL?
...* FROM places WHERE place BETWEEN start AND finish;
END; //
DELIMITER ;
CALL sp_test(5);
If the DEFAULT clause is missing, the initial value is NULL.
The scope of a local variable is the BEGIN ... END block within
which it is declared.
Server System Variables (prefixed with @@):
The MySQL se...