Struct HelpStatement 

pub struct HelpStatement {
    pub topic: Ident,
    pub meta: Meta,
}

A MySQL HELP '<topic>' statement (gated by UtilitySyntax::help_statement) — look up a term in the server’s help tables (sql_yacc.yy help).

The operand is a single ident_or_text (sql_yacc.yy), so a bare identifier (HELP contents) and a quoted string (HELP 'contents') are both accepted and fold to one Ident whose quote style round-trips from its span — exactly the AccountName name treatment. Exactly one operand: a bare HELP and a two-operand HELP 'a' 'b' are both ER_PARSE_ERROR on mysql:8. Not preparable over the binary protocol (live mysql:8.4.10: ER_UNSUPPORTED_PS 1295).

Fields

topic: Ident

The help topic — a bare-or-quoted ident_or_text, folded to an Ident.

meta: Meta

Source location and node identity.

Trait Implementations

impl Clone for HelpStatement

fn clone(&self) -> HelpStatement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HelpStatement

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HelpStatement

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for HelpStatement

impl Hash for HelpStatement

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 PartialEq for HelpStatement

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

Equality operator ==.

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

Inequality operator !=.

impl Render for HelpStatement

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 Serialize for HelpStatement

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Spanned for HelpStatement

fn span(&self) -> Span

Return the span for this value.

impl StructuralPartialEq for HelpStatement