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SQL select only rows with max value on a column [duplicate]
...ce...
All you need is a GROUP BY clause with the MAX aggregate function:
SELECT id, MAX(rev)
FROM YourTable
GROUP BY id
It's never that simple, is it?
I just noticed you need the content column as well.
This is a very common question in SQL: find the whole data for the row with some max value ...
How to check if all of the following items are in a list?
...readable, but it may be over-kill. Sets are particularly useful to compute union/intersection/differences between collections, but it may not be the best option in this situation ...
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NSLog the method name with Objective-C in iPhone
...t pointer incompatibility, but it works... So _cmd (type: SEL) really is a char* !?
– Nicolas Miari
Jun 19 '12 at 9:46
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How can I link to a specific glibc version?
...ric
so in menuconfig I do:
Operating System
Version of linux
so I select:
4.14.71
which is the first equal or older version. It has to be older since the kernel is backwards compatible.
Now you can build with:
env -u LD_LIBRARY_PATH time ./ct-ng build CT_JOBS=`nproc`
and now wait for...
Creating an R dataframe row-by-row
...based file systems are a good example (which evolved from concepts such as union mounts, which also ply both sides).
If R Core wanted to do this, underlying vector storage could function like a union mount. One reference to the vector storage might be valid for subscripts 1:N, while another refe...
PHP: How to remove all non printable characters in a string?
I imagine I need to remove chars 0-31 and 127,
17 Answers
17
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How to get the current time as datetime
...thing similar to let components = calendar.components(.NSCalendarUnit.Year.union(NSCalendarUnit.Minute), fromDate: date), the vertical slash cant be used here anymore.
– Hola Soy Edu Feliz Navidad
Jun 24 '15 at 19:09
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Why are Oracle table/column/index names limited to 30 characters?
...ine of code that goes something like
l_table_name VARCHAR2(30);
BEGIN
SELECT table_name
INTO l_table_name
FROM dba_tables
WHERE ...
to suddenly break because the DBA 15 years ago used VARCHAR2(30) rather than DBA_TABLES.TABLE_NAME%TYPE in the script would cause massive revolt. I w...
Constructor overload in TypeScript
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I know this is an old question, but new in 1.4 is union types; use these for all function overloads (including constructors). Example:
class foo {
private _name: any;
constructor(name: string | number) {
this._name = name;
}
}
var f1 = new foo("bar");
va...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
.../[\W_]+/g," ");
\W is the negation of shorthand \w for [A-Za-z0-9_] word characters (including the underscore)
Example at regex101.com
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