大约有 3,551 项符合查询结果（耗时：0.0162秒） [XML]
How to serialize a TimeSpan to XML
...o follow up, do we have a way to deserialise this value PT2M45S to Time in SQL?
– Xander
Feb 4 '19 at 10:27
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Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
...ow the list_display in the admin, because showing each person would make a SQL query.
To avoid this, you need to modify get_queryset method in PersonAdmin, for example:
def get_queryset(self, request):
return super(PersonAdmin,self).get_queryset(request).select_related('book')
Before: 73 ...
Problems with contenttypes when loading a fixture in Django
I am having trouble loading Django fixtures into my MySQL database because of contenttypes conflicts. First I tried dumping the data from only my app like this:
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MySQL - UPDATE multiple rows with different values in one query
...
Excuse my english sir, when i try to make an update mysql give me the error: # 1062 - Duplicate entry 'XXX' for key 'PRIMARY'. That does when I try to update a record with the same value it already had, is there any way to skip the update if the current value is the same as bein...
RESTful Authentication
...s available. For instance, in our framework, we cache the responses at the SQL level, not at the URI level. So adding this extra parameter doesn't break the cache mechanism.
See this article for some details about RESTful authentication in our client-server ORM/SOA/MVC framework, based on JSON and ...
MySQL SELECT only not null values
...ERE YourColumn IS NOT NULL;
Just for completeness I'll mention that in MySQL you can also negate the null safe equality operator but this is not standard SQL.
SELECT *
FROM table
WHERE NOT (YourColumn <=> NULL);
Edited to reflect comments. It sounds like your table may not be in first no...
How to turn off INFO logging in Spark?
...e it dynamically for your application using setLogLevel:
from pyspark.sql import SparkSession
spark = SparkSession.builder.\
master('local').\
appName('foo').\
getOrCreate()
spark.sparkContext.setLogLevel('WARN')
In the pyspark console, a default spark session ...
How do you write multiline strings in Go?
...nieleD That's a slight nonsequitur, but which dialect? Presumably mainly MySQL? stackoverflow.com/a/10574031 Note that by extension of the same argument, it's a pain for embedding markdown, or shell scripts (if you opt to use backtick in place of $(abcd)).
– Ivan Vučica
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Import multiple csv files into pandas and concatenate into one DataFrame
...p. as the Hapood ecosystem has growing list of tools where you can perform sql queries directly on many different directories containing different file types (csv, json, txt, databases) as if it was one data source. There must be something similar in python, since it has had a 20 year jump start ...
What underlies this JavaScript idiom: var self = this?
I saw the following in the source for WebKit HTML 5 SQL Storage Notes Demo :
10 Answers
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