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Efficient SQL test query or validation query that will work across all (or most) databases
...FORMATION_SCHEMA.SYSTEM_USERS
or
CALL NOW()
HSQLDB (tested with version 1.8.0.10)
Note: I tried using a WHERE 1=0 clause on the second query, but it didn't work as a value for Apache Commons DBCP's validationQuery, since the query doesn't return any rows
VALUES 1 or SELECT 1 FROM SYSIBM.SYSDUMM...
How to get UTC time in Python?
...
185
Try this code that uses datetime.utcnow():
from datetime import datetime
datetime.utcnow()
F...
Why is String.chars() a stream of ints in Java 8?
In Java 8, there is a new method String.chars() which returns a stream of int s ( IntStream ) that represent the character codes. I guess many people would expect a stream of char s here instead. What was the motivation to design the API this way?
...
JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
...on can be spotty 1 . The same source also provides a nice summary of the 8 different orientations a JPEG can have:
12 A...
How to declare an ArrayList with values? [duplicate]
... = List.of("xyz", "abc");
// 'var' works only for local variables
Java 8 using Stream:
Stream.of("xyz", "abc").collect(Collectors.toList());
And of course, you can create a new object using the constructor that accepts a Collection:
List<String> x = new ArrayList<>(Arrays.asLis...
List all sequences in a Postgres db 8.1 with SQL
...
edited Mar 11 '11 at 10:48
community wiki
2 re...
Java 8 NullPointerException in Collectors.toMap
The Java 8 Collectors.toMap throws a NullPointerException if one of the values is 'null'. I don't understand this behaviour, maps can contain null pointers as value without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
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How can I open a Shell inside a Vim Window?
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89
Neovim and Vim 8.2 support this natively via the :ter[minal] command.
See terminal-window in t...
How to find largest objects in a SQL Server database?
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287
I've been using this SQL script (which I got from someone, somewhere - can't reconstruct who it...
Why in C++ do we use DWORD rather than unsigned int? [duplicate]
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answered Jun 8 '10 at 6:46
GManNickGGManNickG
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