I have 2 tables a table of PARENT ACCOUNTS (holds PARENT ID and CHILD ID) a table of CHILD ACCOUNTS (Holds CHILD ID and ATTRIBUTE) 1 PARENT can have many CHILDREN Each Child has one or more attributes...

From a SELECT I get this result: u.id, c.id 101, 33 104, 57 105, 51 A UNION SELECT DISTINCT finds following records: u.id, c.id 104, 57 The final result is: u.id, c.id 101, 33 104, 57 105, 51 But I wa...

I am trying to insert data from three separate tables into one temp table. The three tables mostly consist of the same columns but there is no link between them (i.e. no link between tblOne and tblTwo...

If I have a vector of sets, say, vec_of_sets = [Set(vec1), Set(vec2), ..., Set(vecp)] how do I obtain a set equal to the union of sets in the vector? That is, how can I write the following efficientl...