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Update statement with inner join on Oracle
I have a query which works fine in MySQL, but when I run it on Oracle I get the following error:
14 Answers
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What is the difference between log4net and ELMAH?
... you to easily log or view those exceptions via many different mechanisms (SQL, RSS, Twitter, files, email, etc.). If you have no built-in exception handling ELMAH will most likely get you what you are looking for in terms of exception handling in a web application environment.
Log4net can be used ...
XML serialization in Java? [closed]
...uments and relational tables. Castor provides Java-to-XML binding, Java-to-SQL persistence, and more.
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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
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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 ...