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Commenting code in Notepad++
...ng the language manually - or - it contains a mix of languages (eg. inline SQL in Python code), the block comment/uncomment will not work.
– Juha Untinen
Apr 22 '16 at 6:50
...
How can I select multiple columns from a subquery (in SQL Server) that should have one record (selec
...00-1-4' AND '2010-1-4'
, assuming that b.id is a PRIMARY KEY on B
In MS SQL 2005 and higher you may use this syntax:
SELECT SalesOrderID, Foo
FROM (
SELECT A.SalesOrderId, B.Foo,
ROW_NUMBER() OVER (PARTITION BY B.SalesOrderId ORDER BY B.whatever) AS rn
FROM A
JOIN B ON B.SalesOrde...
ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
... that. One common scenario is that you've tested the update in a tool, say SQL Developer or Toad, and have then tried to run it somewhere else while the first session still holds the lock. So you need to commit/rollback the other session before you can run the update again.
– A...
When to Redis? When to MongoDB? [closed]
...licity, much shorter learning curve for developers with traditional DB and SQL experience. However, Redis's non-traditional approach requires more effort to learn, but greater flexibility.
Eg. A cache layer can probably be better implemented in Redis. For more schema-able data, MongoDB is better. ...
How can I alter a primary key constraint using SQL syntax?
...ing a column in its primary key constraint. Instead of editing it through SQL Server, I want to put this in a script to add it as part of our update scripts.
...
Get Insert Statement for existing row in MySQL
Using MySQL I can run the query:
15 Answers
15
...
Storing Images in DB - Yea or Nay?
... Are you, by chance, using the ImageResizing.Net library to handle your SQL->disk image caching? It's the most advanced, scalable, and robust disk cache you can get...
– Lilith River
Aug 15 '11 at 21:13
...
SQLAlchemy default DateTime
...should be an input to the Column function. Try this:
import datetime
from sqlalchemy import Column, Integer, DateTime
from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()
class Test(Base):
__tablename__ = 'test'
id = Column(Integer, primary_key=True)
crea...
Delete sql rows where IDs do not have a match from another table
I'm trying to delete orphan entries in a mysql table.
3 Answers
3
...
Repository Pattern Step by Step Explanation [closed]
...objects, is safely contained in the repository.
Very often, you will find SQL queries scattered in the codebase and when you come to add a column to a table you have to search code files to try and find usages of a table. The impact of the change is far-reaching.
With the repository pattern, you w...