Struct TableFunctions 

pub struct TableFunctions {
    pub functions: Vec<Expr>,
}

A set of set-returning functions in a FROM, which PostgreSQL spells ROWS FROM (…) once there is more than one.

[LATERAL] function_name ( … ) [WITH ORDINALITY] …
[LATERAL] ROWS FROM ( function_name ( … ) [AS (coldefs)] [, …] ) [WITH ORDINALITY] …

The rule worth keeping is that the wrapper appears only for a set: one function is written plainly, because ROWS FROM (f()) and f() mean the same thing and the shorter form is what a person writes. Put the result in TableRef::expression; the column-definition lists belong to the individual function expressions, which is a dialect’s own function builder reaching core through Expr::Custom.

Fields

functions: Vec<Expr>

The function calls, in order.

Implementations

impl TableFunctions

pub fn new(functions: impl IntoExprList) -> Self

A set from any expression list.

pub fn is_empty(&self) -> bool

Whether there are no functions at all.

Trait Implementations

impl Clone for TableFunctions

fn clone(&self) -> TableFunctions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TableFunctions

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

Formats the value using the given formatter.

impl Default for TableFunctions

fn default() -> TableFunctions

Returns the “default value” for a type.

impl Expression for TableFunctions

fn write_sql(&self, w: &mut SqlWriter<'_>)

Append this fragment to w.