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How do you find the row count for all your tables in Postgres
...
^[^|]*\|\s+([^|]*?)\s+\| table \|.*$
to:
select '\1', count(*) from \1 union/g
which will yield you something very similar to this:
select 'auth_group', count(*) from auth_group union
select 'auth_group_permissions', count(*) from auth_group_permissions union
select 'auth_permission', count(*...
Is it possible to insert multiple rows at a time in an SQLite database?
...TO 'tablename'
SELECT 'data1' AS 'column1', 'data2' AS 'column2'
UNION ALL SELECT 'data1', 'data2'
UNION ALL SELECT 'data1', 'data2'
UNION ALL SELECT 'data1', 'data2'
a note on performance
I originally used this technique to efficiently load large datasets from Ruby on Rails. However, as...
Using ThreadPool.QueueUserWorkItem in ASP.NET in a high traffic scenario
...pawning threads.
You typically move this functionality out into a Windows Service that you then communicate with (I use MSMQ to talk to them).
-- Edit
I described an implementation here: Queue-Based Background Processing in ASP.NET MVC Web Application
-- Edit
To expand why this is even better t...
MongoDB: Combine data from multiple collections into one..how?
...
Doing unions in MongoDB in a 'SQL UNION' fashion is possible using aggregations along with lookups, in a single query. Here is an example I have tested that works with MongoDB 4.0:
// Create employees data for testing the union.
d...
Union of dict objects in Python [duplicate]
How do you calculate the union of two dict objects in Python, where a (key, value) pair is present in the result iff key is in either dict (unless there are duplicates)?
...
HTTP Error 500.19 and error code : 0x80070021
... Web Server (all), Management Tools (IIS Management Console and Management Service), Windows Authentication - if you are using any of it
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follo...
Does Python have an ordered set?
...list.
OrderedSet([1, 2, 3])
This is a MutableSet, so the signature for .union doesn't match that of set, but since it includes __or__ something similar can easily be added:
@staticmethod
def union(*sets):
union = OrderedSet()
union.union(*sets)
return union
def union(self, *sets):
...
What are all the user accounts for IIS/ASP.NET and how do they differ?
... for the ASP.NET v4.0 Application Pool. See DefaultAppPool above.
NETWORK SERVICE: -
The NETWORK SERVICE account is a built-in identity introduced on Windows 2003. NETWORK SERVICE is a low privileged account under which you can run your application pools and websites. A website running in a Windo...
How to get first and last day of previous month (with timestamp) in SQL Server
...st month' AS Title, CONVERT(VARCHAR, @FirstDayOfLastMonth , 120) AS [ODBC]
UNION
SELECT
'Last day of last month' AS Title, CONVERT(VARCHAR, @LastDayOfLastMonth , 120) AS [ODBC]
Run the above code to produce the following output:
Note: Bear in mind that today's date for me is 12th Septemb...
Turning a Comma Separated string into individual rows
... STUFF(String, 1, CHARINDEX(',', String + ','), '')
FROM Testdata
UNION all
SELECT
SomeID,
OtherID,
LEFT(String, CHARINDEX(',', String + ',') - 1),
STUFF(String, 1, CHARINDEX(',', String + ','), '')
FROM tmp
WHERE
String > ''
)
SELECT...