Module text 

EXPLAIN ... AS TEXT support for LIR structures.

The format adheres to the following conventions:

1. In general, every line that starts with an uppercase character corresponds to a Plan variant.
2. Whenever the variant has an attached ~Plan, the printed name is $V::$P where $V identifies the variant and $P the plan.
3. The fields of a ~Plan struct attached to a Plan are rendered as if they were part of the variant themself.
4. Non-recursive parameters of each sub-plan are written as $key=$val pairs on the same line or as lowercase $key fields on indented lines.
5. A single non-recursive parameter can be written just as $val.

Structs

Arrangement 🔒

Helper struct for rendering an arrangement.

Permutation 🔒

Helper struct for rendering a permutation.

PlanAnnotations 🔒

Annotations for physical plans.

Functions

fmt_join_chain 🔒

Format a join implementation chain like %0:t[#0{a}] » %1:u[#0{c}] » %2[×].

fmt_join_key_brackets 🔒

Render [k1, k2, …] for a non-empty join key, or [×] for a cross product.

humanize_input_name 🔒

Render a join input as %pos:name if we can dig a Get out of plan, otherwise just %pos. Mirrors dig_name_from_expr in src/expr/src/explain/text.rs for the MIR EXPLAIN OPTIMIZED PLAN output.