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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...
What's the difference between “version number” in iTunes Connect, “bundle version”, “bundle version
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edited Feb 21 '13 at 8:03
answered Sep 2 '11 at 8:58
F...
git rebase, keeping track of 'local' and 'remote'
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VonCVonC
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When to use LinkedList over ArrayList in Java?
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3428
Summary ArrayList with ArrayDeque are preferable in many more use-cases than LinkedList. If you'...
Why is the order in dictionaries and sets arbitrary?
...e the keys 'foo' and 'bar', for example, and lets assume the table size is 8 slots. In Python 2.7, hash('foo') is -4177197833195190597, hash('bar') is 327024216814240868. Modulo 8, that means these two keys are slotted in slots 3 and 4 then:
>>> hash('foo')
-4177197833195190597
>>>...
Git: Merge a Remote branch locally
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VonCVonC
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Moving decimal places over in a double
...ut.println(new BigDecimal(x));
prints:
0.100000000000000005551115123125782702118158340454101562
12.339999999999999857891452847979962825775146484375
In short, rounding is unavoidable for sensible answers in floating point whether you are doing this explicitly or not.
Note: x / 100 and x * 0.0...
What Process is using all of my disk IO
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Aaron Digulla
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answered Jan 28 '09 at 19:40
phresusphres...
How do shift operators work in Java? [duplicate]
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answered Jun 6 '12 at 8:48
Kazekage GaaraKazekage Gaara
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How to change the CHARACTER SET (and COLLATION) throughout a database?
...n a table (Mysql). He set it up with Latin collation, when it should be UTF8, and now I have issues. Every record with Chinese and Japan character turn to ??? character.
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