大约有 46,100 项符合查询结果（耗时：0.0748秒） [XML]
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
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PostgreSQL 9.0 or later:
Recent versions of Postgres (since late 2010) have the string_agg(expression, delimiter) function which will do exactly what the question asked for, even letting you specify the delimiter string:
SELECT company_id, string_agg(employee, ', ')
FROM mytable
GROUP BY ...
Server.UrlEncode vs. HttpUtility.UrlEncode
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answered Mar 2 '09 at 15:03
Mehrdad AfshariMehrdad Afshari
379k8383 gold badges822822 silver badges775775 bronze badges
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Insert current date in datetime format mySQL
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222
If you're looking to store the current time just use MYSQL's functions.
mysql_query("INSERT I...
Troubleshooting “The use statement with non-compound name … has no effect”
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answered Feb 16 '12 at 18:42
Lightness Races in OrbitLightness Races in Orbit
350k6666 gold badges574574 silver badges955955 bronze badges
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How do I create directory if it doesn't exist to create a file?
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edited Nov 20 '18 at 9:59
BKSpurgeon
21.7k88 gold badges7777 silver badges6363 bronze badges
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SQLAlchemy IN clause
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How about
session.query(MyUserClass).filter(MyUserClass.id.in_((123,456))).all()
edit: Without the ORM, it would be
session.execute(
select(
[MyUserTable.c.id, MyUserTable.c.name],
MyUserTable.c.id.in_((123, 456))
)
).fetchall()
select() takes two parameters,...
Imitating a blink tag with CSS3 animations
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245
The original Netscape <blink> had an 80% duty cycle. This comes pretty close, although t...
Use images instead of radio buttons
...: pointer;
}
/* CHECKED STYLES */
[type=radio]:checked + img {
outline: 2px solid #f00;
}
<label>
<input type="radio" name="test" value="small" checked>
<img src="http://placehold.it/40x60/0bf/fff&text=A">
</label>
<label>
<input type="radio" name="tes...
angularjs directive call function specified in attribute and pass an argument to it
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edited May 23 '17 at 12:34
Community♦
111 silver badge
answered Nov 21 '13 at 18:19
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Access parent URL from iframe
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21
You're correct. Subdomains are still considered separate domains when using iframes. It's possi...