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Best way to select random rows PostgreSQL
...1 + trunc(random() * 5100000)::int AS id
FROM generate_series(1, 1030) -- 1000 + few percent - adapt to your needs
LIMIT 1030 -- hint for query planner
) r
JOIN big b USING (id) -- eliminate miss
UNION -- e...
how to create a Java Date object of midnight today and midnight tomorrow?
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351
java.util.Calendar
// today
Calendar date = new GregorianCalendar();
// reset hour, minut...
Why not use Double or Float to represent currency?
...99999999994) return 1?
– phuclv
Feb 21 '18 at 8:56
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Delete all local changesets and revert to tree
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21
You'll want to make a local clone where you preserve only the changesets that are also present ...
MySQL - Make an existing Field Unique
...ng table with a field that should be unique but is not. I only know this because an entry was made into the table that had the same value as another, already existing, entry and this caused problems.
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Deadly CORS when http://localhost is the origin
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BeauBeau
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How to pull specific directory with git
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210
cd into the top of your repo copy
git fetch
git checkout HEAD path/to/your/dir/or/file
Wher...
Spinlock versus Semaphore
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edited Jun 21 '13 at 10:14
answered Jun 20 '13 at 18:54
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What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
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cletuscletus
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