Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

It turns out that the MDX UNION operator only operates on sets, and unlike SQL cannot be used to concatenate multiple MDX statements that produce a similar result set.

I need to form the equivalent of a Union Join in Oracle 8i, even though a Union Join doesn't appear to be supported in 8i. I might be able to manipulate a Full Outer Join to get the results I need ...

Bug description In sql lab, when use "union" to connect two sql statement and run the sql query, there is an error "database error"/"network error". by the way, when ...

It seems the same code that used to work in EF core 6.4.4 is not breaking in EF 7 and creating an incorrect SQL statement. Because of this incorrect SQL we are getting an error: "All queries combined ...

The Ontario government's move to force school-support staff to stay at work by using the heavy hammer of the notwithstanding clause could have huge repercussions on labour relations, experts say.