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SQL select only rows with max value on a column [duplicate]
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I know that MySQL allows you to add non aggregate fields to a "grouped by" query, but I find that kinda pointless. Try running this select id, max(rev), rev from YourTable group by id and you see what I mean. Take your time and ...
What does 'const static' mean in C and C++?
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The "special section" is known as the data segment, which it shares with all the other global variables, such as explicit "strings" and global arrays. This is opposing to the code segment.
– spoulson
Oct 7 '08 a...
Difference between a user and a schema in Oracle?
...TE IMMEDIATE 'ALTER SESSION SET current_schema=SCHEMA_OWNER';
END;
/
Now we are ready to create an object in the schema owner.
CONN schema_owner/password
CREATE TABLE test_tab (
id NUMBER,
description VARCHAR2(50),
CONSTRAINT test_tab_pk PRIMARY KEY (id)
);
GRANT SELECT ON te...
Is a Java hashmap search really O(1)?
...hm! We can generalzie this to
pcollision x k = (n / capacity)k
And now we can disregard some arbitrary number of collisions and end up with vanishingly tiny likelihood of more collisions than we are accounting for. You could get the probability to an arbitrarily tiny level by choosing the c...
Maven2: Missing artifact but jars are in place
From now to then, my Maven 2 started to mess around.
33 Answers
33
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How to Update Multiple Array Elements in mongodb
....6 ( and available in the development branch from MongoDB 3.5.12 ) you can now update multiple array elements in a single request.
This uses the filtered positional $[<identifier>] update operator syntax introduced in this version:
db.collection.update(
{ "events.profile":10 },
{ "$set": {...
How to generate UML diagrams (especially sequence diagrams) from Java code?
...id, then install GEF from download.eclipse.org/tools/gef/updates/releases Now copy-paste licence from email to Window->Preferences->ObjectAid How to create diagram? objectaid.com/class-diagram
– rluks
Apr 5 '13 at 22:01
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Windows batch files: .bat vs .cmd?
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I understand now. I updated my gist. Apparently, it doesn't (re)set the errorlevel when calling a set var=.. statement. Which is odd, because I assumed that was expected behavior. Arguments could be made for both. I'll stick with .bat fil...
PHP Fatal error: Using $this when not in object context
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@Sarfraz it's better now. Sorry for pestering you, but as this became the accepted answer, I felt it necessary to point these things out :) Thanks for your patience.
– Gordon
Feb 28 '10 at 13:00
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The developers of this app have not set up this app properly for Facebook Login?
...al public? and Turn ON the switch next to this.
That's it! - App is now publicly available. See the fully green circle next to the app name.
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