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Numbering rows within groups in a data frame
Working with a data frame similar to this:
7 Answers
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CSS selector for a checked radio button's label
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try the + symbol:
It is Adjacent sibling combinator. It combines two sequences of simple selectors having the same parent and the second one must come IMMEDIATELY after the first.
As such:
input[type="radio"]:checked+label{ font-weight: bold; }
//a label tha...
How to check if a database exists in SQL Server?
What is the ideal way to check if a database exists on a SQL Server using TSQL? It seems multiple approaches to implement this.
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Using IQueryable with Linq
What is the use of IQueryable in the context of LINQ?
4 Answers
4
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@RequestParam vs @PathVariable
...t is the difference between @RequestParam and @PathVariable while handling special characters?
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SQL Server insert if not exists best practice
...ompetitions results table which holds team member's names and their ranking on one hand.
8 Answers
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MySQL Insert Where query
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MySQL INSERT Syntax does not support the WHERE clause so your query as it stands will fail. Assuming your id column is unique or primary key:
If you're trying to insert a new row with ID 1 you should be using:
INSERT INTO Users(i...
Oracle: how to UPSERT (update or insert into a table?)
The UPSERT operation either updates or inserts a row in a table, depending if the table already has a row that matches the data:
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Square retrofit server mock for testing
What's the best way to mock a server for testing when using the square retrofit framework .
11 Answers
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What is the purpose of Android's tag in XML layouts?
I've read Romain Guy's post on the <merge /> tag, but I still don't understand how it's useful. Is it a sort-of replacement of the <Frame /> tag, or is it used like so:
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