Function plan_explain_plan

src/sql/src/plan/statement/dml.rs:770–804

(
    scx: &StatementContext,
    explain: ExplainPlanStatement<Aug>,
    params: &Params,
)

}

pub fn plan_explain_plan(
    scx: &StatementContext,
    explain: ExplainPlanStatement<Aug>,
    params: &Params,
) -> Result<Plan, PlanError> {
    let (format, verbose_syntax) = match explain.format() {
        mz_sql_parser::ast::ExplainFormat::Text => (ExplainFormat::Text, false),
        mz_sql_parser::ast::ExplainFormat::VerboseText => (ExplainFormat::Text, true),
        mz_sql_parser::ast::ExplainFormat::Json => (ExplainFormat::Json, false),
        mz_sql_parser::ast::ExplainFormat::Dot => (ExplainFormat::Dot, false),
    };
    let stage = explain.stage();

    // Plan ExplainConfig.
    let mut config = {
        let mut with_options = ExplainPlanOptionExtracted::try_from(explain.with_options)?;

        if !scx.catalog.system_vars().persist_stats_filter_enabled() {
            // If filtering is disabled, explain plans should not include pushdown info.
            with_options.filter_pushdown = Some(false);
        }

        ExplainConfig::try_from(with_options)?
    };
    config.verbose_syntax = verbose_syntax;

    let explainee = plan_explainee(scx, explain.explainee, params)?;

    Ok(Plan::ExplainPlan(ExplainPlanPlan {
        stage,
        format,
        config,
        explainee,
    }))
}

pub fn plan_explain_schema(
    scx: &StatementContext,