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SQL Call Stored Procedure for each Row without using a cursor
How can one call a stored procedure for each row in a table, where the columns of a row are input parameters to the sp without using a Cursor?
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How to turn IDENTITY_INSERT on and off using SQL Server 2008?
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Via SQL as per MSDN
SET IDENTITY_INSERT sometableWithIdentity ON
INSERT INTO sometableWithIdentity
(IdentityColumn, col2, col3, ...)
VALUES
(AnIdentityValue, col2value, col3value, ...)
SET IDENTITY_INSERT sometableWithIdentity OFF
The complete error messa...
How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
So if I have to choose between a hash table or a prefix tree what are the discriminating factors that would lead me to choose one over the other. From my own naive point of view it seems as though using a trie has some extra overhead since it isn't stored as an array but that in terms of run time (a...
Get top 1 row of each group
I have a table which I want to get the latest entry for each group. Here's the table:
20 Answers
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SQLAlchemy ORDER BY DESCENDING?
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from sqlalchemy import desc
someselect.order_by(desc(table1.mycol))
Usage from @jpmc26
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Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
...s at the django shell. If you're looking for something more formal and testable, it depends on what versions you're using. If you use south, see: south.readthedocs.org/en/latest/tutorial/part3.html and if you use django's migrations, see the "data migrations" section here: docs.djangoproject.com/e...
SQL Server Output Clause into a scalar variable
Is there any "simple" way to do this or I need to pass by a table variable with the "OUTPUT ... INTO" syntax?
3 Answers
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How do I execute a stored procedure once for each row returned by query?
... way. I pass it user_id and it does it's thing. I want to run a query on a table and then for each user_id I find run the stored procedure once on that user_id
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How do I split a string so I can access item x?
...-in function STRING_SPLIT that will split a string and return a one-column table result which you can use in a SELECT statement or elsewhere.
– qJake
Apr 3 '17 at 20:24
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SQL Server dynamic PIVOT query?
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Dynamic SQL PIVOT:
create table temp
(
date datetime,
category varchar(3),
amount money
)
insert into temp values ('1/1/2012', 'ABC', 1000.00)
insert into temp values ('2/1/2012', 'DEF', 500.00)
insert into temp values ('2/1/2012', 'GHI',...