Struct LateralView 

pub struct LateralView<X: Extension = NoExt> {
    pub outer: bool,
    pub function: FunctionCall<X>,
    pub alias: Ident,
    pub columns: ThinVec<Ident>,
    pub meta: Meta,
}

One Hive/Spark LATERAL VIEW [OUTER] <generator>(args) <alias> [AS <col> [, …]] clause on a Select (Select::lateral_views): a table-generating function (explode, posexplode, json_tuple, …) whose output rows are cross-joined against each input row, with OUTER keeping input rows the generator produces no rows for (NULL-padded, like an outer join).

Parity with sqlparser-rs LateralView

Mirrors sqlparser-rs’s LateralView struct (lateral_view: Expr, lateral_view_name: ObjectName, lateral_col_alias: Vec<Ident>, outer: bool), with two deliberate reshapings (ADR-0011’s typed canonical shape) and one rename:

• lateral_view: Expr → function: FunctionCall — both grammars require a generator call here (Hive FromClauseParser.g lateralView: … function tableAlias …; Spark SqlBaseParser.g4 lateralView: LATERAL VIEW OUTER? qualifiedName '(' expression* ')' …), so the typed call node is the grammar, where sqlparser-rs’s arbitrary expression over-admits non-calls.
• lateral_view_name: ObjectName → alias: Ident — the correlation alias is a single identifier in both grammars (Hive tableAlias, Spark tblName=identifier), never a qualified name.
• lateral_col_alias → columns, a ThinVec<Ident> (empty when unwritten — column aliases are optional since Hive 0.12).

Acceptance bound (no Hive/Spark oracle)

The table alias is required (both grammars make it non-optional) and the AS before the column list is optional — Spark’s grammar spells AS? while Hive’s requires the keyword, so accepting the bare-column spelling under the one atomic flag is a known conservative-direction over-acceptance for the Hive preset (the JoinSyntax::sided_semi_anti_join precedent, captured on the owning ticket). Rendering canonicalizes the bare spelling to AS — a structural, not byte-exact, round-trip (the wildcard-modifier precedent). Whether the named function is a genuine UDTF is a bind-time check past the parse-level contract.

Gating and LATERAL disambiguation

Gated by SelectSyntax::lateral_view_clause — on for Hive, Databricks, and the permissive Lenient union, off elsewhere; with the gate off the LATERAL keyword in this position is left unconsumed and surfaces as a clean parse error. LATERAL also introduces the standard LATERAL derived-table / function factor (TableFactorSyntax::lateral), but the two occupy disjoint grammar positions — a table-factor head (after FROM/,/a join keyword) versus after the whole FROM list — and additionally partition on the follow token (VIEW here; ( or a function/subquery head there), so the dispatch is unambiguous under every preset combination, including Lenient (which enables both), and needs no GrammarConflict registry entry.

Fields

outer: bool

OUTER — keep input rows the generator returns no rows for, NULL-padding the generated columns (Hive/Spark’s outer-join refinement of the default cross-join semantics).

function: FunctionCall<X>

The table-generating function call (explode(col)); inline, not boxed, because this node lives only behind Select::lateral_views’ heap allocation (the RowsFromItem precedent).

alias: Ident

The required correlation alias naming the generated relation (Hive tableAlias / Spark tblName).

columns: ThinVec<Ident>

The [AS] c1, c2 column aliases naming the generator’s output columns; empty when unwritten.

meta: Meta

Source location and node identity.

Trait Implementations

impl<X: Clone + Extension> Clone for LateralView<X>

fn clone(&self) -> LateralView<X>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<X: Debug + Extension> Debug for LateralView<X>

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

Formats the value using the given formatter.

impl<'de, X> Deserialize<'de> for LateralView<X>

where X: Deserialize<'de> + Extension,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<X: Eq + Extension> Eq for LateralView<X>

impl<X: Hash + Extension> Hash for LateralView<X>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<X: PartialEq + Extension> PartialEq for LateralView<X>

fn eq(&self, other: &LateralView<X>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<X: Extension + Render> Render for LateralView<X>

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

Return the render for this value.

fn operand_binding_power(&self) -> Option<BindingPower>

The binding power this node contributes when it appears as an operand, or None (the default) for a self-delimiting node — an atom, call, or constructor — that never needs parentheses.

impl<X> Serialize for LateralView<X>

where X: Serialize + Extension,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<X: Extension> Spanned for LateralView<X>

fn span(&self) -> Span

Return the span for this value.

impl<X: PartialEq + Extension> StructuralPartialEq for LateralView<X>