Struct AlterDatabaseOptions 

pub struct AlterDatabaseOptions {
    pub spelling: DatabaseKeyword,
    pub name: Option<Ident>,
    pub options: ThinVec<AlterDatabaseOption>,
    pub meta: Meta,
}

A MySQL ALTER {DATABASE | SCHEMA} [<name>] <option> … schema-option change (sql_yacc.yy alter_database_stmt), gated by StatementDdlGates::alter_database_options.

A distinct node — and gate — from DuckDB’s AlterDatabase SET ALIAS relocation: the two share only the ALTER DATABASE head, and their grammars are disjoint (DuckDB requires a name and a single SET ALIAS TO; MySQL’s name is optional — ALTER DATABASE CHARACTER SET utf8 binds the default schema — and it takes a non-empty, repeatable list of charset/collation/ encryption/read-only AlterDatabaseOptions). Modelling them apart keeps each behaviour’s invariants in the type rather than as XOR-populated fields on one node. The DATABASE/ SCHEMA spelling is an exact synonym recorded for round-trip.

Fields

spelling: DatabaseKeyword

Which of the synonymous DATABASE/SCHEMA keywords was written.

name: Option<Ident>

The database name, or None for the unqualified ALTER DATABASE <option> … form that targets the session’s default schema (ident_or_empty; a dotted d.x is ER_PARSE_ERROR, so a bare Ident).

options: ThinVec<AlterDatabaseOption>

The option list, in source order; non-empty (alter_database_options).

meta: Meta

Source location and node identity.

Trait Implementations

impl Clone for AlterDatabaseOptions

fn clone(&self) -> AlterDatabaseOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AlterDatabaseOptions

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AlterDatabaseOptions

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for AlterDatabaseOptions

impl Hash for AlterDatabaseOptions

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 AlterDatabaseOptions

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

Equality operator ==.

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

Inequality operator !=.

impl Render for AlterDatabaseOptions

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 AlterDatabaseOptions

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 AlterDatabaseOptions

fn span(&self) -> Span

Return the span for this value.

impl StructuralPartialEq for AlterDatabaseOptions