大约有 40,000 项符合查询结果（耗时：0.0544秒） [XML]
SqlAlchemy - Filtering by Relationship Attribute
...ts = Patient.query.filter(Patient.mother.has(phenoscore=10))
or join (usually faster):
patients = Patient.query.join(Patient.mother, aliased=True)\
.filter_by(phenoscore=10)
share
|
...
How do you manage databases in development, test, and production?
...of good options. I wouldn't use the "restore a backup" strategy.
Script all your schema changes, and have your CI server run those scripts on the database. Have a version table to keep track of the current database version, and only execute the scripts if they are for a newer version.
Use a migr...
why does DateTime.ToString(“dd/MM/yyyy”) give me dd-MM-yyyy?
I want my datetime to be converted to a string that is in format "dd/MM/yyyy"
5 Answers
...
How do I import CSV file into a MySQL table?
... MySQL table so that I can refactor into a sane format. I created a table called 'CSVImport' that has one field for every column of the CSV file. The CSV contains 99 columns , so this was a hard enough task in itself:
...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
We have an application running locally where we're experiencing the following error:
25 Answers
...
Cookie overflow in rails application?
...occurs.
The easiest way to solve this one is, you need change your session_store and don't use the cookie_store. You can use the active_record_store by example.
Here is the steps
Generate a migration that creates the session table
rake db:sessions:create
Run the migration
rake db:migrate
Mod...
How to unescape HTML character entities in Java?
Basically I would like to decode a given Html document, and replace all special chars, such as " " -> " " , ">" -> ">" .
...
Find MongoDB records where array field is not empty
All of my records have a field called "pictures". This field is an array of strings.
11 Answers
...
Return two and more values from a method
Is there any possibility to return multiple values from method? Something like this:
4 Answers
...
Getting visitors country from their IP
...
why im getting unknow all the time with every ip ? , used same code.
– echo_Me
Feb 18 '14 at 18:12
1
...