大约有 30,000 项符合查询结果（耗时：0.0420秒） [XML]
How do I convert an interval into a number of hours with postgres?
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select floor((date_part('epoch', order_time - '2016-09-05 00:00:00') / 3600)), count(*)
from od_a_week
group by floor((date_part('epoch', order_time - '2016-09-05 00:00:00') / 3600));
The ::int conversion follows the principle of rounding.
If you want a different result such as...
How do I unlock a SQLite database?
...qlite3: sqlite> .dump PRAGMA foreign_keys=OFF; BEGIN TRANSACTION; /**** ERROR: (5) database is locked *****/ ROLLBACK; -- due to errors
– woky
Nov 28 '14 at 22:40
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Defeating a Poker Bot
...ricky.
Attempt to find leaks in its
game via data analysis and trial
and error Once leaks/patterns have
been found, attempt to repetitively
exploit them and avoid any other
situations.
Where a human is capable of adaptation, bots probably are less so, and where humans are weighted by the chai...
How to deal with page breaks when printing a large HTML table
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Josh PJosh P
1,0591313 silver badges1212 bronze badges
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Calc of max, or max of calc in CSS
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edited Dec 13 '17 at 21:05
Nathan Arthur
4,57133 gold badges3636 silver badges6060 bronze badges
answe...
What is the difference between self-types and trait subclasses?
... extends Tweeter {
| def noCanDo = name
| }
<console>:9: error: illegal inheritance;
self-type Wrong does not conform to Tweeter's selftype Tweeter with User
trait Wrong extends Tweeter {
^
<console>:10: error: not found: value name
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PHP cURL custom headers
... $season_data = curl_exec($ch);
if (curl_errno($ch)) {
print "Error: " . curl_error($ch);
exit();
}
// Show me the result
curl_close($ch);
$json= json_decode($season_data, true);
share
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How to select date without time in SQL
... i used this select convert(varchar(10), APPROVED_DATE, 120) , i got error column APPROVED_DATE datetime , how i will convert it ? error The multi-part identifier "LAB_RESULTS.APPROVED_DATE" could not be bound.
– Abdullah
May 27 at 11:51
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How do I simulate a hover with a touch in touch enabled browsers?
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answered May 23 '10 at 9:05
Rich BradshawRich Bradshaw
65.7k4343 gold badges167167 silver badges234234 bronze badges
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Android Studio could not find any version that matches com.android.support:appcompat-v7:+
Running a project in Android Studio fails with this error: could not find any version that matches com.android.support:appcompat-v7:+
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