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How do I get the MIN() of two fields in Postgres?
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LEAST(a, b):
The GREATEST and LEAST functions select the largest or smallest value from a list of any number of expressions. The expressions must all be convertible to a common data type, which will be the type of the result (see Section 10.5 for details). NULL values in the list are ignored. T...
Batch script: how to check for admin rights
...went searching for other commands that require elevated permissions. rationallyparanoid.com had a list of a few, so I ran each command on the two opposite extremes of current Windows OSs (XP and 8) in the hopes of finding a command that would be denied access on both OSs when run with standard permi...
Sorting a Python list by two fields
...t. You should post your own question separately on SO if it is not specifically related to the answer here or the OP's original question.
– pbible
Nov 23 '15 at 16:59
7
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Git commit with no commit message
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git generally requires a non-empty message because providing a meaningful commit message is part of good development practice and good repository stewardship. The first line of the commit message is used all over the place within git;...
What is the difference between String.slice and String.substring?
... Feb 11 '10 at 10:36
Daniel VassalloDaniel Vassallo
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How does the static modifier affect this code?
...hases take place: 1. Identification, 2. Execution
In identification phase all static variables are detected and initialized with default values.
So now the values are:
A obj=null
num1=0
num2=0
The second phase, execution, starts from top to bottom. In Java, the execution starts from the first stat...
What are the differences between Chosen and Select2?
...o be loaded as option tags in the DOM, which limits it to working with
small-ish datasets. Select2 uses a function to find results
on-the-fly, which allows it to partially load results.
Paging of results: Since Select2 works with large datasets and only loads a small amount of matching results...
Android: how to handle button click
...ionality (Java Class Files). It also makes for easier debugging. It is actually a lot easier to read this way and think about Android imo.
Question 2:
I believe the two mainly used are #2 and #3. I will use a Button clickButton as an example.
2
is in the form of an anonymous class.
Button clickButto...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...e to go with @Moody_Mudskipper's answer: Using .drop=FALSE can give potentially unexpected results when one or more grouping variables are not coded as factors. See examples below:
library(dplyr)
data(iris)
# Add an additional level to Species
iris$Species = factor(iris$Species, levels=c(levels(ir...
Can you get the column names from a SqlDataReader?
After connecting to the database, can I get the name of all the columns that were returned in my SqlDataReader ?
9 Answers...