Module explain 

EXPLAIN support for structures defined in this crate.

Modules

json 🔒

EXPLAIN AS JSON support for structures defined in this crate.

text 🔒

EXPLAIN ... AS TEXT support for structures defined in this crate.

Structs

ExplainContext

Explain context shared by all mz_repr::explain::Explain implementations in this crate.

ExplainMultiPlan

A structure produced by the explain_$format methods in mz_repr::explain::Explain implementations at points in the optimization pipeline identified with a DataflowDescription instance with plans of type T.

ExplainSinglePlan

A structure produced by the explain_$format methods in mz_repr::explain::Explain implementations for points in the optimization pipeline identified with a single plan of type T.

ExplainSource

HumanizedExplain

A HumanizerMode that is unambiguous and should be used in EXPLAIN output.

HumanizedExpr

A helper struct for wrapping expressions whose text output is modulated by the presence of some local (inferred schema) or global (required redaction) context.

HumanizedNotice

A HumanizerMode that is ambiguous but allows us to print valid SQL statements, so it should be used in optimizer notices.

PushdownInfo

Carries metadata about the possibility of MFP pushdown for a source. (Likely to change, and only emitted when a context flag is enabled.) The operators of a source import that persist filter pushdown can apply, as EXPLAIN ... WITH (filter pushdown) reports them.

Traits

HumanizeDisplay

HumanizerMode

A trait that abstracts the various ways in which we can humanize expressions.

SourceOperators

The operators pushed down onto a source import, in either form a DataflowDescription carries them: the MapFilterProject the MIR optimizer rewrites, or the MfpPlan lowering leaves.

Functions

enforce_linear_chains

Normalize the way inputs of multi-input variants are rendered.

fmt_temporal_filter

Renders temporal filter=<lowers> <= mz_now() < <uppers>, omitting the <lowers> <= or < <uppers> part when the corresponding list is empty, and ends the line.

fmt_text_constant_rows

id_gen 🔒