Struct InsertSelect 

pub struct InsertSelect<D, T> { /* private fields */ }

INSERT INTO t (..) SELECT ..: rows a query produces rather than rows a caller holds. From InsertSeed::select.

The header is the target’s own writable columns, so the two sides line up by the target’s order rather than by whatever order its CREATE TABLE happened to use. The body is a render::Fragment, rendered before the statement knows how many parameters precede it, for the reason a CTE body is one.

Known limitation: no ON CONFLICT on this shape, and no column subset. The query fills every column the target lets one write.

Trait Implementations

impl<D: Dialect, T: Table> Statement for InsertSelect<D, T>

type Dialect = D

type Table = T

fn to_sql(&self, _dialect: Self::Dialect) -> (String, Vec<Value>)

The dialect is an argument for the reason Select::to_sql’s is.

fn returning<Sel, Idx>(self, sel: Sel) -> Returning<Self, Sel>

where Self: Sized, Self::Dialect: SupportsReturning, Sel: Selection<WrittenTable<Self::Table>, Idx>,

RETURNING, on whichever of the three this is. The clause is the same clause. A distinct type rather than Self with a flag set: the execution layer needs Sel’s concrete type to know what to decode a returned row into, and an optional field would erase it.