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An item with the same key has already been added
...throw the error). Also, check to make sure there's no similar edmx names (table column has "CURRENCY", one of Navigation Properties name had "Currency")
– Robert Koch
Mar 1 '12 at 23:06
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What is the function of the DBMDL File in VS database project
...d a <project name>.dbmdl file. But at some point after I added some tables and built the project, the <project name>.dbmdl file disappeared. I seem to be able to carry on without it. Good to know it is not something to submit to source control.
– Mike Finch
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How to set the margin or padding as percentage of height of parent container?
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@zanerock I'm fairly certain that MDN compat table is outdated. For instance, it says that Safari needs the -webkit- prefix, but according to caniuse it hasn't required the prefix since Safari 11. Did you try it with any browser in which it didn't work?
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jquery, find next element by class
... I don't see a point to use next(). You can instead code:
$(obj).parents('table').find('.class')
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Run a PostgreSQL .sql file using command line arguments
...d to run these inserts on my PostgreSQL database in order to add them to a table. The files are that large that it is impossible to open them and copy the INSERT statements into an editor window and run them there. I found on the Internet that you can use the following by navigating to the bin folde...
How to style dt and dd so they are on the same line?
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CSS Grid layout
Like tables, grid layout enables an author to align elements into columns and rows.
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout
To change the column sizes, take a look at the grid-template-columns property...
MySQL: Invalid use of group function
...in the WHERE clause.
Second, instead of using a subquery, simply join the table to itself:
SELECT a.pid
FROM Catalog as a LEFT JOIN Catalog as b USING( pid )
WHERE a.sid != b.sid
GROUP BY a.pid
Which I believe should return only rows where at least two rows exist with the same pid but there is ...
Can't subtract offset-naive and offset-aware datetimes
...imezone aware timestamptz field in PostgreSQL. When I pull data from the table, I then want to subtract the time right now so I can get it's age.
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How to search in array of object in mongodb
Suppose the mongodb document(table) 'users' is
3 Answers
3
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List of Rails Model Types
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Rails 5 on PostgreSQL: you can use add_column :table_name, :field_name, :inet create a column to store IP addresses. See eg. postgresqltutorial.com/postgresql-data-types
– MSC
Feb 5 '19 at 12:17
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