Module sql::plan::explain[−][src]

Expand description

This module houses a pretty printer for HirRelationExpr, which is the SQL-specific relation expression (as opposed to expr::MirRelationExpr). See also expr::explain.

The format is the same, except for the following extensions:

  • References to columns in outer scopes are indicated by adding a ^ per level of nesting, e.g. #^^4.
  • Subqueries can be embedded in scalar expressions.

Structs

Explanation

An Explanation facilitates pretty-printing of a HirRelationExpr.

ExplanationNode