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Select random row from a sqlite table
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Have a look at Selecting a Random Row from an SQLite Table
SELECT * FROM table ORDER BY RANDOM...
How do I pass command-line arguments to a WinForms application?
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static void Main(string[] args)
{
// For the sake of this example, we're just printing the a...
What is the difference between & and && in Java?
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13 Answers
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Return 0 if field is null in MySQL
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Use IFNULL:
IFNULL(expr1, 0)
From the documentation:
If expr1 is not NULL, IFNULL() returns expr1; otherwise it returns expr2. IFNULL() returns a numeric or string value, depending on the context in which it is used.
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What's quicker and better to determine if an array key exists in PHP?
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10 Answers
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Creating dataframe from a dictionary where entries have different lengths
Say I have a dictionary with 10 key-value pairs. Each entry holds a numpy array. However, the length of the array is not the same for all of them.
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How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
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How do you sort an array on multiple columns?
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16 Answers
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Subscripts in plots in R
...w to write subscripts in the title or the subtitle in R.
How can I write v 1,2 with 1,2 as subscripts?
6 Answers
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Is it safe to use -1 to set all bits to true?
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I recommend you to do it exactly as you have shown, since it is the most straight forward one....