大约有 23,000 项符合查询结果（耗时：0.0512秒） [XML]
Create an index on a huge MySQL production table without table locking
...If your using a version greater than 5.1 indices are created while the database is online. So not to worry you won't interrupt production system use."
This is ****FALSE**** (at least for MyISAM / InnoDB tables, which is what 99.999% of people out there use. Clustered Edition is different.)
Doing...
using lodash .groupBy. how to add your own keys for grouped output?
...
}];
console.log(
_.chain(data)
// Group the elements of Array based on `color` property
.groupBy("color")
// `key` is group's name (color), `value` is the array of objects
.map((value, key) => ({ color: key, users: value }))
.value()
);
<script src="https://c...
Java Annotations
... run your tests, this method will be called and the test will pass or fail based on whether an IOException is thrown.
share
|
improve this answer
|
follow
|
...
Is it possible to specify the schema when connecting to postgres with JDBC?
...t ran into the same issue trying to specify the schema to use for the liquibase command line.
Update
As of JDBC v9.4 you can specify the url with the new currentSchema parameter like so:
jdbc:postgresql://localhost:5432/mydatabase?currentSchema=myschema
Appears based on an earlier patch:
http:...
How can I get the timezone name in JavaScript?
...ible from JavaScript or is that something I am going to have to guestimate based on the offset?
8 Answers
...
Does PHP have threading?
...now:
The object store's hash table where data is stored, thread safe, is
based on the TsHashTable shipped with PHP, by Zend.
The object store has a read and write lock, an additional access lock is provided for the TsHashTable such that if requires ( and it does, var_dump/print_r, direct access t...
SVN Repository Search [closed]
...g the svn log --search command. See the updated answer about the new webui-based search. It does not have this limitation.
– bahrep
Jan 11 at 12:27
add a comment
...
gem install: Failed to build gem native extension (can't find header files)
... This helped me install fpm, probably helps install any ruby-based software. I used yum -y install gcc ruby-devel rubygems.
– Zoltán
Jan 7 '14 at 11:24
...
How do you check in python whether a string contains only numbers?
...rscript digits. This covers digits which cannot be used to form numbers in base 10, like the Kharosthi numbers. Formally, a digit is a character that has the property value Numeric_Type=Digit or Numeric_Type=Decimal.
share
...
GSON - Date format
... that you need to define formats for both date and time part or use String-based formatting. For example:
Gson gson = new GsonBuilder()
.setDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz").create();
or using java.text.DateFormat
Gson gson = new GsonBuilder()
.setDateFormat(DateFormat.FULL, Date...