sql-view

I'm using MS SQL Server, and I'd like to alter a view from within a stored procedure, by executing something like "alter view VIEWNAME as ([some sql])". A few pages thrown up by google assert that this is not supported directly (and neither are related alter-table statements), but there are also examples of how to work around it using constructions like this: declare @sql varchar(max) select @sql = 'alter view VIEWNAME as ([some sql])' exec(@sql) Writing code as literal strings smells a bit, even for SQL. My questions: Why is this not supported? What's the difference between running this from

What's the difference between table-valued functions and views? Is there something you can do with 1 that's hard or impossible to do with the other? Or does the difference lie in efficiency? Martin Smith A parameterless inline TVF and a non materialized View are very similar. A few functional differences that spring to mind are below. Views Accepts Parameters - No Expanded out by Optimiser - Yes Can be Materialized in advance - Yes (through indexed views) Is Updatable - Yes Can contain Multiple Statements - No Can have triggers - Yes Can use side-effecting operator - Yes Inline TVFs Accepts

I'm trying to create a view where I want a column to be only true or false. However, it seems that no matter what I do, SQL Server (2008) believes my bit column can somehow be null. I have a table called "Product" with the column "Status" which is INT, NULL . In a view, I want to return a row for each row in Product, with a BIT column set to true if the Product.Status column is equal to 3, otherwise the bit field should be false. Example SQL SELECT CAST( CASE ISNULL(Status, 0) WHEN 3 THEN 1 ELSE 0 END AS bit) AS HasStatus FROM dbo.Product If I save this query as a view and look at the columns

My site was developed using Drupal 6 running on a Postgresql 8.3 server on Ubuntu 11.10. Also webmin version 1.590. Now I want to update records in a table, but when I run: UPDATE uac_institution_view SET status = '2' WHERE nid = '9950' it gives me an error like: Failed to execute SQL : SQL UPDATE uac_institution_view SET status = '2' WHERE nid = '9950' failed : ERROR: cannot update a view HINT: You need an unconditional ON UPDATE DO INSTEAD rule. The problem is that only SELECT queries work. UPDATE , INSERT and DELETE commands are not working; they fail with the above error. Is this a

When I create a view I am basically making a new table that will automatically be transacted upon when data in one of the tables it joins changes; is that correct? Also why can't I use subqueries in my view? A view works like a table , but it is not a table. It never exists; it is only a prepared SQL statement that is run when you reference the view name. IE: CREATE VIEW foo AS SELECT * FROM bar SELECT * FROM foo ...is equivalent to running: SELECT x.* FROM (SELECT * FROM bar) x A MySQLDump will never contain rows to be inserted into a view... Also why can't I use subqueries in my view????