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How do I get SUM function in MySQL to return '0' if no values are found?
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307
Use COALESCE to avoid that outcome.
SELECT COALESCE(SUM(column),0)
FROM table
WHERE ...
To...
Why do indexes in XPath start with 1 and not 0?
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mike mckechniemike mckechnie
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Checking for the correct number of arguments
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– Laurence Gonsalves
Dec 3 '10 at 1:27
if [ -e "$1" ] then echo "$1 : No such directory" exit 1 fi
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Is it Linq or Lambda?
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edited Sep 12 '11 at 17:21
answered Sep 12 '11 at 17:07
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CPU Privilege Rings: Why rings 1 and 2 aren't used?
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Evan TeranEvan Teran
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About Python's built in sort() method
...n of timsort in and for Java (Joshua's also the guy who implemented, in 1997, the modified mergesort that's still used in Java, and one can hope that Java will eventually switch to his recent port of timsort).
Some explanation of the Java port of timsort is here, the diff is here (with pointers to ...
Regular expression for a string containing one word but not another
... KobiKobi
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What is the canonical way to determine commandline vs. http execution of a PHP script?
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answered Oct 6 '08 at 11:07
user3850user3850
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Naming convention for utility classes in Java
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answered Apr 20 '10 at 17:01
JayJay
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GitHub: Reopening a merged pull request
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edited Aug 14 '17 at 12:25
answered Oct 11 '12 at 11:11
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