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I need to generate uuid for my rails application. What are the options(gems) I have? [duplicate]
... UUID has RFC! This will break any UUID validation (like in PostgreSQL)
– kixorz
Feb 10 '14 at 8:05
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How do I enable MSDTC on SQL Server?
Is this even a valid question? I have a .NET Windows app that is using MSTDC and it is throwing an exception:
6 Answers
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Alter a MySQL column to be AUTO_INCREMENT
...ry key column AUTO_INCREMENT after the fact. I have tried the following SQL, but got a syntax error notification.
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Best way to check if object exists in Entity Framework?
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If you don't want to execute SQL directly, the best way is to use Any(). This is because Any() will return as soon as it finds a match. Another option is Count(), but this might need to check every row before returning.
Here's an example of how to use i...
How to generate a new Guid in stored procedure?
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With SQL Server you can use the function NEWID. You're using C# so I assume that you're using SQL Server. I'm sure other database system have similar functions.
select NEWID()
If you're using Oracle then you can use the SYS_GUI...
What is the maximum length of a table name in Oracle?
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With standard SQL you can also determine the lengths by querying the table: select * from all_tab_columns where table_name = 'ALL_TAB_COLUMNS';
– JustinKSU
Mar 11 '16 at 23:18
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What are the respective advantages/limitations of Amazon RDS vs. EC2 with MySQL? [closed]
... you can consider EC2 + EBS RAID 0. Vanilla EC2 is a terrible option for MySQL hosting.
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MySQL Great Circle Distance (Haversine formula)
...ript that gets Longitude and Latitude values and then inputs them into a MySQL query. I'd like to make it solely MySQL. Here's my current PHP Code:
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Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (
...ata (Which meant when you went to save it 0 rows actually got updated). In SQL terms, their update query's where clause contains the original value of every field in the row, and if 0 rows are affected it knows something's gone wrong.
The idea behind it is that you won't end up overwriting a change...
How can you hide database output in Rails console?
...trying use a pointer to a logger that is set to nil (source: Disable Rails SQL logging in console)
To turn it back on
ActiveRecord::Base.logger.level = 0
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