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Does PostgreSQL support “accent insensitive” collations?
In Microsoft SQL Server, it's possible to specify an "accent insensitive" collation (for a database, table or column), which means that it's possible for a query like
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CASCADE DELETE just once
I have a Postgresql database on which I want to do a few cascading deletes. However, the tables aren't set up with the ON DELETE CASCADE rule. Is there any way I can perform a delete and tell Postgresql to cascade it just this once? Something equivalent to
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...lly, a lot of dbms have been quite poor when it comes to handling joins (MySQL being a particularly noteworthy example). So n+1 has, often, been notably faster than a join. And then there are ways to improve on n+1 but still without needing a join, which is what the original problem relates to.
How...
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.
19 Ans...
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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