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Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF
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You're inserting values for OperationId that is an identity column.
You can turn on identity insert on the table like this so that you can specify your own identity values.
SET IDENTITY_INSERT Table1 ON
INSERT INTO Table1
/*Note the column list is REQUIRED he...
How to implement WiX installer upgrade?
...a localised error message, and also prevents upgrading an already existing identical version (i.e. only lower versions are upgraded):
<MajorUpgrade
AllowDowngrades="no" DowngradeErrorMessage="!(loc.NewerVersionInstalled)"
AllowSameVersionUpgrades="no"
/>
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Default function arguments in Rust
...ng the default value and the function coded only once (instead of in every call), but is of course a whole lot more to type out. The function call will look like add(None, None), which you may or may not like depending on your perspective.
If you see typing nothing in the argument list as the code...
Database: To delete or not to delete records
...database behavior? Do you prefer to delete a record from the database physically? Or is it better to just flag the record with a "deleted" flag or a boolean column to denote the record is active or inactive?
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Update a table using JOIN in SQL Server?
...umn to the aggregate of another column (which violates the principle of avoiding storing redundant data), you can use a CTE (common table expression) - see here and here for more details:
;WITH t2 AS
(
SELECT [key], CalculatedColumn = SUM(some_column)
FROM dbo.table2
GROUP BY [key]
)
UPDA...
How to create a unique index on a NULL column?
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It seems the content of the link you provided was actually (partially) copied without attribution from here: decipherinfosys.wordpress.com/2007/11/30/…
– Tom Juergens
Feb 25 '10 at 9:58
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How do I hotkey directly to File Search tab in Eclipse
...ar as I know, the search window tab depend of the open file you're on when calling the search function. So, for example if your on a web.xml file, it will open the "plug-in search" instead of the "java-search".
Edit: there is a way to force the default open tab, by assigning a shortcut to the "File...
Finding ALL duplicate rows, including “elements with smaller subscripts”
...ment. The "Example" section of ?duplicated shows you how to use it. Just call duplicated twice, once with fromLast=FALSE and once with fromLast=TRUE and take the rows where either are TRUE.
Some late Edit:
You didn't provide a reproducible example, so here's an illustration kindly contributed ...
How do I fit an image (img) inside a div and keep the aspect ratio?
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onload won't be called when the image is cached in the browser, so this will only work when the image is loaded for the first time.
– Redtopia
Apr 27 '14 at 1:24
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Is the 'override' keyword just a check for a overridden virtual method?
...s still there, the new one is added just as an overload. In this case, all calls towards the old method will function just as before, without any change in behavior (which would have been the very purpose of the rewriting).
one forgets to declare the method in the superclass as "virtual", but still ...