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How do I do multiple CASE WHEN conditions using SQL Server 2008?
What I'm trying to do is use more than one CASE WHEN condition for the same column.
10 Answers
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SQLiteDatabase.query method
I am using the query method of SQLiteDatabase. How do I use the query method?
5 Answers
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MSSQL Error 'The underlying provider failed on Open'
... had no write access to the Database I'd set up. When I added the user to SQL, the Plugin worked like a charm.
– Mike_Matthews_II
Mar 8 '13 at 18:31
2
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MySQL select 10 random rows from 600K rows fast
...ple, to gaps, to non-uniform with gaps.
http://jan.kneschke.de/projects/mysql/order-by-rand/
For most general case, here is how you do it:
SELECT name
FROM random AS r1 JOIN
(SELECT CEIL(RAND() *
(SELECT MAX(id)
FROM random)) AS id)
AS...
Return a value if no rows are found in Microsoft tSQL
Using a Microsoft version of SQL, here's my simple query. If I query a record that doesn't exist then I will get nothing returned. I'd prefer that false (0) is returned in that scenario. Looking for the simplest method to account for no records.
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What is the PostgreSQL equivalent for ISNULL()
In MS SQL-Server, I can do:
5 Answers
5
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When increasing the size of VARCHAR column on a large table could there be any problems?
I'm using SQL Server 2008 and I need to make a VARCHAR field bigger, from (200 to 1200) on a table with about 500k rows. What I need to know is if there are any issues I have not considered.
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How to perform a mysqldump without a password prompt?
I would like to know the command to perform a mysqldump of a database without the prompt for the password.
13 Answers
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Favourite performance tuning tricks [closed]
... mainly use Sybase, but most of the advice will apply across the board.
SQL Server, for example, comes with a host of performance monitoring / tuning bits, but if you don't have anything like that (and maybe even if you do) then I would consider the following...
99% of problems I have seen are c...
What is the difference between varchar and nvarchar?
...hant late answer: of course you can store UTF-8 in varchar but it'll break SQL Server string functions. If you perform all searches/transformations within your application then yes, you may do it (but what's the benefit?). Only Unicode encoding supported by SS is UCS-2 (yes, not UTF-16 before SS2k16...