I know this is an old post but since I encountered the same issue and was able to solve it, thought of sharing it. This is an IntelliSense cache issue and could be solved by pressing ctrl+shift+R (shortcut for Edit -> IntelliSense -> Refresh Local Cache)
Try this: SELECT max(salary) FROM emptable WHERE salary < (SELECT max(salary) FROM emptable);
I’m not sure how comprehensive this list is, but maybe this will help – http://troels.arvin.dk/db/rdbms/
I think LINQ to SQL is good for projects targeted for SQL Server. ADO.NET Entity Framework is better if we are targeting different databases. Currently I think a lot of providers are available for ADO.NET Entity Framework, Provider for PostgreSQL, MySQL, esql, Oracle and many other (check http://blogs.msdn.com/adonet/default.aspx). I don’t want to use standard ADO.NET … Read more
You need to use the COALESCE function in PostgreSQL http://developer.postgresql.org/pgdocs/postgres/functions-conditional.html Essentially you need to tell SQL how to handle NULLs. i.e. When NULL return 0.
Delete Table1.* From Table1 Where Exists( Select 1 From Table2 Where Table2.Name = Table1.Name ) = True To expand on my answer, the official SQL specification does not provide for using Joins in action queries specifically because it can create ambiguous results. Thus, it is better (and Access is much happier) if you can avoid … Read more
Since 10g Oracle doesn’t immediately drop tables when we issue a DROP TABLE statement. Instead it renames them like this BIN$IN1vjtqhTEKcWfn9PshHYg==$0 and puts them in the recycle bin. This allows us to recover tables we didn’t mean to drop. Find out more. Tables in the recycle bin are still tables, so they show up in … Read more
I like to call this problem “cross join by proxy”. Since there is no information (WHERE or JOIN condition) how the tables department and contact are supposed to match up, they are cross-joined via the proxy table person – giving you the Cartesian product. Very similar to this one: Two SQL LEFT JOINS produce incorrect … Read more
The same effect can be replicated in Oracle either by using the first_value() function or by using one of the rank() or row_number() functions. Both variants also work in Postgres. first_value() select distinct col1, first_value(col2) over (partition by col1 order by col2 asc) from tmp first_value gives the first value for the partition, but repeats … Read more