risingwave_frontend::optimizer::plan_node

Module expr_rewritable

source

Traitsยง

  • ExprRewritable
    Rewrites expressions in a PlanRef. Due to Share operator, the ExprRewriter needs to be idempotent i.e., applying it more than once to the same ExprImpl will be a noop on subsequent applications. rewrite_exprs should only return a plan with the given node modified. To rewrite recursively, call rewrite_exprs_recursive on RewriteExprsRecursive.