Struct Select 

pub struct Select {
    pub distinct: bool,
    pub items: Vec<SelectItem>,
    pub from: Option<TableRef>,
    pub joins: Vec<Join>,
    pub where_: Option<Expr>,
    pub order_by: Vec<OrderBy>,
    pub limit: Option<usize>,
    pub offset: Option<usize>,
    pub set_ops: Vec<SetArm>,
}

Fields

distinct: bool

items: Vec<SelectItem>

from: Option<TableRef>

joins: Vec<Join>

where_: Option<Expr>

order_by: Vec<OrderBy>

ORDER BY / LIMIT / OFFSET. On a compound query (set_ops non-empty) these apply to the COMBINED result, as SQL says, and every arm carries none of its own.

limit: Option<usize>

offset: Option<usize>

set_ops: Vec<SetArm>

The further arms of a UNION / INTERSECT / EXCEPT. Empty for an ordinary SELECT. This SELECT’s own clauses are the FIRST arm.

Implementations

impl Select

pub fn base_relations(&self) -> Vec<String>

Every base relation this query reads, at any depth: the FROM list, the joins, derived tables, and every subquery inside an expression or a further set-operation arm.

The caller that routes a statement to this engine decides by relation name, so a name buried three levels down inside \dd’s derived table has to surface here or the statement is routed to a path that cannot parse it — and reports a confusing error from that path.

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Select