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Delete duplicate rows from small table
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DELETE FROM dupes a
WHERE a.ctid <> (SELECT min(b.ctid)
FROM dupes b
WHERE a.key = b.key);
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Visual Studio 2013 hangs when opening a solution
...| Attach to Process...
In the list of processes locate devenv.exe.
Click Select... and explicitly choose 'Native' and 'Managed' code.
Click OK and OK to close Select dialog and Attach to Process dialog.
Go back to the first instance of VS and repro the hang.
Upon the hang, control should go to ...
Can I create a One-Time-Use Function in a Script or Stored Procedure?
... create temp stored procedures like:
create procedure #mytemp as
begin
select getdate() into #mytemptable;
end
in an SQL script, but not functions. You could have the proc store it's result in a temp table though, then use that information later in the script ..
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MySQL: Transactions vs Locking Tables
...ransactions vs locking tables to ensure database integrity and make sure a SELECT and UPDATE remain in sync and no other connection interferes with it. I need to:
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Copy table without copying data
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Try:
CREATE TABLE foo SELECT * FROM bar LIMIT 0
Or:
CREATE TABLE foo SELECT * FROM bar WHERE 1=0
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MySQL Error 1093 - Can't specify target table for update in FROM clause
...s question
In MySQL, you can't modify the same table which you use in the SELECT part.
This behaviour is documented at:
http://dev.mysql.com/doc/refman/5.6/en/update.html
Maybe you can just join the table to itself
If the logic is simple enough to re-shape the query, lose the subquery and join th...
Why can't I see the “Report Data” window when creating reports?
...ther answer, make sure you have a report open and are currently "focused" (selected) on some part of the report! Then, and ONLY THEN, will it show up in the menu and be accessible via the shortcut!
– D.R.
Jul 15 '14 at 17:55
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Convert an image (selected by path) to base64 string
How do you convert an image from a path on the user's computer to a base64 string in C#?
12 Answers
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SQL Server - SELECT FROM stored procedure
...le result sets, each with its own schema. It's not suitable for using in a SELECT statement.
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Linq code to select one item
I find myself writing a lot of code like this to select one item that matches
7 Answers
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