- <init>
Creates a Blackboard.
- convertExpression
- convertSortExpression
Converts an item in an ORDER BY clause inside a window (OVER) clause, extracting
DESC, NULLS LAST an
- flatten
- getRootField
- getSubQuery
- getValidator
- isConvertedSubq
Determines whether a RexNode corresponds to a sub-query that's been converted to
a constant.
- lookup
Creates an expression with which to reference the expression whose offset in its
from-list is offset
- lookupExp
Returns an expression with which to reference a from-list item.
- register
Registers a relational expression.
- registerSubQuery