Struct Select 

pub struct Select {

    pub ctes: Vec<Cte>,
    pub compound: Vec<(CompoundOp, Select)>,
    pub distinct: bool,
    pub columns: Vec<ResultColumn>,
    pub from: Option<FromClause>,
    pub where_clause: Option<Expr>,
    pub group_by: Vec<Expr>,
    pub having: Option<Expr>,
    pub window_defs: Vec<(String, WindowSpec)>,
    pub order_by: Vec<OrderTerm>,
    pub limit: Option<Expr>,
    pub offset: Option<Expr>,
    pub values_rows: usize,
}

A SELECT query.

Fields

ctes: Vec<Cte>

WITH common table expressions, in declaration order.

compound: Vec<(CompoundOp, Select)>

Compound continuations (UNION/INTERSECT/EXCEPT …), left-associative. The outer order_by/limit/offset apply to the whole compound.

distinct: bool

SELECT DISTINCT?

columns: Vec<ResultColumn>

The projected result columns.

from: Option<FromClause>

The FROM clause, if any.

where_clause: Option<Expr>

The WHERE predicate, if any.

group_by: Vec<Expr>

GROUP BY expressions.

having: Option<Expr>

HAVING predicate.

window_defs: Vec<(String, WindowSpec)>

WINDOW name AS (spec) named-window definitions.

order_by: Vec<OrderTerm>

ORDER BY terms.

limit: Option<Expr>

LIMIT expression.

offset: Option<Expr>

OFFSET expression.

values_rows: usize

When this select is a VALUES (…), (…), … query core, the number of rows in that clause (≥ 1); 0 for an ordinary SELECT. The parser desugars a multi-row VALUES into UNION ALL compound arms, so this records how many leading compound arms (its first values_rows - 1) are extra rows of one VALUES clause rather than true compound continuations — which SQLite renders as a single SCAN N-ROW VALUES CLAUSE node in EXPLAIN QUERY PLAN. Purely informational; it does not affect execution (the UNION ALL desugaring already has the right semantics).

Trait Implementations

impl Clone for Select

fn clone(&self) -> Select

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Select

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

Formats the value using the given formatter.

impl PartialEq for Select

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Select