Enum CteBody 

pub enum CteBody {
    Select(SelectStatement),
    Insert(Box<InsertStatement>),
    Update(Box<UpdateStatement>),
    Delete(Box<DeleteStatement>),
    Merge(Box<MergeStatement>),
}

v7.37.43-T4.4 — CTE body. Read-only (Select) or data-modifying (Insert / Update / Delete with optional RETURNING). The data-modifying variants must carry a RETURNING projection for the outer query to reference the CTE alias by; an empty RETURNING is only valid if no outer reference materialises (rare — typically caught at planning).

Variants

Select(SelectStatement)

Insert(Box<InsertStatement>)

Update(Box<UpdateStatement>)

Delete(Box<DeleteStatement>)

Merge(Box<MergeStatement>)

v7.39 (read01 round 149) — PG 17 allows MERGE as a data-modifying CTE body (WITH m AS (MERGE … RETURNING …)).

Implementations

impl CteBody

pub fn as_select(&self) -> Option<&SelectStatement>

Convenience accessor used by classical (read-only) CTE callsites that still expect a SELECT body. Returns None for data-modifying CTEs; callers must explicitly route those through exec_with_ctes’s modifying branch.

pub fn as_select_mut(&mut self) -> Option<&mut SelectStatement>

pub fn is_modifying(&self) -> bool

Trait Implementations

impl Clone for CteBody

fn clone(&self) -> CteBody

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CteBody

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for CteBody

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for CteBody

fn eq(&self, other: &CteBody) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CteBody