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Convert SQLITE SQL dump file to POSTGRESQL
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101
You should be able to feed that dump file straight into psql:
/path/to/psql -d database -U user...
How can I selectively escape percent (%) in Python strings?
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answered May 21 '12 at 0:03
Nolen RoyaltyNolen Royalty
16.2k44 gold badges3434 silver badges4646 bronze badges
...
How does a hash table work?
...n the library. The output of the hash calculation could be in the range of 0 to one billion which is a lot higher.
So, what do we do? We use something called modulus calculation, which basically says that if you counted to the number you wanted (i.e. the one billion number) but wanted to stay insid...
Numpy `logical_or` for more than two arguments
...ith a scalar instead of an array. So:
>>> np.any((x, y, z), axis=0)
array([ True, True, True, False], dtype=bool)
As you might expect, logical_and is similar—you can chain it, np.reduce it, functools.reduce it, or substitute all with an explicit axis.
What about other operations,...
Difference between == and === in JavaScript [duplicate]
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edited Aug 29 '18 at 0:58
аlex dykyі
3,6272121 silver badges3535 bronze badges
answered Feb 7 '09...
Compare JavaScript Array of Objects to Get Min / Max
...st = Number.NEGATIVE_INFINITY;
var tmp;
for (var i=myArray.length-1; i>=0; i--) {
tmp = myArray[i].Cost;
if (tmp < lowest) lowest = tmp;
if (tmp > highest) highest = tmp;
}
console.log(highest, lowest);
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SQLite UPSERT / UPDATE OR INSERT
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This is a late answer. Starting from SQLIte 3.24.0, released on June 4, 2018, there is finally a support for UPSERT clause following PostgreSQL syntax.
INSERT INTO players (user_name, age)
VALUES('steven', 32)
ON CONFLICT(user_name)
DO UPDATE SET age=excluded.age;
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OSX - How to auto Close Terminal window after the “exit” command executed.
...or me
– Frankenmint
Dec 26 '15 at 3:08
Obvious and clean, perfect.
– aydinugur
...
How to display pandas DataFrame of floats using a format string for columns?
... '${:,.2f}'.format
df = pd.DataFrame([123.4567, 234.5678, 345.6789, 456.7890],
index=['foo','bar','baz','quux'],
columns=['cost'])
print(df)
yields
cost
foo $123.46
bar $234.57
baz $345.68
quux $456.79
but this only works if you want every float to...
How to format a JavaScript date
In JavaScript, how can I format a date object to print as 10-Aug-2010 ?
57 Answers
57...