Enum AlterDatabaseOption 

pub enum AlterDatabaseOption {
    CharacterSet {
        default: bool,
        keyword: CharsetKeyword,
        equals: bool,
        charset: Ident,
        meta: Meta,
    },
    Collate {
        default: bool,
        equals: bool,
        collation: Ident,
        meta: Meta,
    },
    Encryption {
        default: bool,
        equals: bool,
        value: Literal,
        meta: Meta,
    },
    ReadOnly {
        equals: bool,
        value: ReadOnlyValue,
        meta: Meta,
    },
}

One ALTER {DATABASE | SCHEMA} option (sql_yacc.yy alter_database_option). The [=] (opt_equal) and, where admitted, the leading [DEFAULT] are recorded so the surface form round-trips verbatim. The value grammars are fixed; a value outside the set is a parse or bind reject on mysql:8.4.10 (READ ONLY 2 is ER_PARSE_ERROR; ENCRYPTION 'X' binds then rejects ER_WRONG_VALUE, so any string parses).

Variants

CharacterSet

[DEFAULT] {CHARACTER SET | CHARSET} [=] <charset> — the default character set. The charset name is charset_name (ident_or_text, or the reserved BINARY), folded to an Ident.

Fields

default: bool

Whether the leading DEFAULT was written.

keyword: CharsetKeyword

Which of the CHARACTER SET/CHARSET synonyms was written.

equals: bool

Whether the optional = was written.

charset: Ident

The character-set name.

meta: Meta

Source location and node identity.

Collate

[DEFAULT] COLLATE [=] <collation> — the default collation. The name is collation_name (ident_or_text, or the reserved BINARY), folded to an Ident.

Fields

default: bool

Whether the leading DEFAULT was written.

equals: bool

Whether the optional = was written.

collation: Ident

The collation name.

meta: Meta

Source location and node identity.

Encryption

[DEFAULT] ENCRYPTION [=] '<Y|N>' — the default tablespace encryption. Any string literal parses; the Y/N restriction is a bind-time check (ER_WRONG_VALUE), so the value is held verbatim as a Literal.

Fields

default: bool

Whether the leading DEFAULT was written.

equals: bool

Whether the optional = was written.

value: Literal

The encryption value (a string literal).

meta: Meta

Source location and node identity.

ReadOnly

READ ONLY [=] {DEFAULT | 0 | 1} — the schema read-only flag. Takes no leading DEFAULT prefix (unlike the charset/collation/encryption options — DEFAULT READ ONLY is ER_PARSE_ERROR); the value is a ReadOnlyValue ternary_option, and any other number (READ ONLY 2) is ER_PARSE_ERROR.

Fields

equals: bool

Whether the optional = was written.

value: ReadOnlyValue

The read-only value.

meta: Meta

Source location and node identity.

Trait Implementations

impl Clone for AlterDatabaseOption

fn clone(&self) -> AlterDatabaseOption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AlterDatabaseOption

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AlterDatabaseOption

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for AlterDatabaseOption

impl Hash for AlterDatabaseOption

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 AlterDatabaseOption

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

Equality operator ==.

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

Inequality operator !=.

impl Render for AlterDatabaseOption

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 AlterDatabaseOption

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 AlterDatabaseOption

fn span(&self) -> Span

Return the span for this value.

impl StructuralPartialEq for AlterDatabaseOption