- All Implemented Interfaces:
- SqlNodeOld
public class SqlMyRestrict
extends SqlNodeBase1
A fundamental question is how to generate sql statements from
relational algebra expressions.
We need to consider:
table
query (is itself already a statement, in contrast to table)
join (can join tables and queries)
union (can only join statements)
restriction (contributes to the where clause)
projection (basically initiates a new sql statement which wraps the inner statement)
slicing (union and offset)
sort
Essentially this class combines (and removes) the following elements from the algebra
slice,
project,
restrict
Basically this class is analogous to SqlSelectBlock, but without the SDBRequest Dependency
- Author:
- raven