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How do I drop a foreign key constraint only if it exists in sql server?
I can drop a table if it exists using the following code but do not know how to do the same with a constraint:
10 Answers
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Like Operator in Entity Framework?
...note that "WHERE Name LIKE '%xyz%'" will be unable to use an index, so if table is huge it might not perform that well...
– Mitch Wheat
Jun 23 '09 at 14:49
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What is the difference between SQL Server 2012 Express versions?
...itions you are asking about, just focus on the last three columns of every table in there.
Summary compiled from the above document:
* = contains the feature
SQLEXPR SQLEXPRWT SQLEXPRADV
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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
In PostgreSQL I have a table with a varchar column. The data is supposed to be integers and I need it in integer type in a query. Some values are empty strings.
The following:
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Swapping column values in MySQL
I have a MySQL table with coordinates, the column names are X and Y. Now I want to swap the column values in this table, so that X becomes Y and Y becomes X. The most apparent solution would be renaming the columns, but I don't want to make structure changes since I don't necessarily have permission...
Entity Framework Join 3 Tables
I'm trying to join three tables but I can't understand the method...
2 Answers
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CSS - Expand float child DIV height to parent's height
... & best solution and very flexible - but unsupported by IE9 and older.
table or display: table: very simple, very compatible (pretty much every browser ever), quite flexible.
display: inline-block; width:50% with a negative margin hack: quite simple, but column-bottom borders are a little trick...
Where to store global constants in an iOS application?
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For instance if you want to have a central object handling all restaurant tables you create you object at startup and that is it. This object can handle database accesses OR handle it in memory if you don't need to save it. It's centralized, you show only useful interfaces ... !
It's a great help,...
When to use MyISAM and InnoDB? [duplicate]
...s better for beginners. No worries about the foreign relationships between tables.
Faster than InnoDB on the whole as a result of the simpler structure thus much less costs of server resources. -- Mostly no longer true.
Full-text indexing. -- InnoDB has it now
Especially good for read-intensive (se...
How can I find out what FOREIGN KEY constraint references a table in SQL Server?
I am trying to drop a table but getting the following message:
15 Answers
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