Enum ColumnOption
pub enum ColumnOption {
Show 19 variants
Null,
NotNull,
Default(Expr),
Materialized(Expr),
Ephemeral(Option<Expr>),
Alias(Expr),
Unique {
is_primary: bool,
characteristics: Option<ConstraintCharacteristics>,
},
ForeignKey {
foreign_table: ObjectName,
referred_columns: Vec<Ident>,
on_delete: Option<ReferentialAction>,
on_update: Option<ReferentialAction>,
characteristics: Option<ConstraintCharacteristics>,
},
Check(Expr),
DialectSpecific(Vec<Token>),
CharacterSet(ObjectName),
Comment(String),
OnUpdate(Expr),
Generated {
generated_as: GeneratedAs,
sequence_options: Option<Vec<SequenceOptions>>,
generation_expr: Option<Expr>,
generation_expr_mode: Option<GeneratedExpressionMode>,
generated_keyword: bool,
},
Options(Vec<SqlOption>),
Identity(IdentityPropertyKind),
OnConflict(Keyword),
Policy(ColumnPolicy),
Tags(TagsColumnOption),
}
Expand description
ColumnOption
s are modifiers that follow a column definition in a CREATE TABLE
statement.
Variants§
Null
NULL
NotNull
NOT NULL
Default(Expr)
DEFAULT <restricted-expr>
Materialized(Expr)
ClickHouse supports MATERIALIZE
, EPHEMERAL
and ALIAS
expr to generate default values.
Syntax: b INT MATERIALIZE (a + 1)
ClickHouse
MATERIALIZE <expr>
Ephemeral(Option<Expr>)
EPHEMERAL [<expr>]
Alias(Expr)
ALIAS <expr>
Unique
{ PRIMARY KEY | UNIQUE } [<constraint_characteristics>]
ForeignKey
A referential integrity constraint ([FOREIGN KEY REFERENCES <foreign_table> (<referred_columns>) { [ON DELETE <referential_action>] [ON UPDATE <referential_action>] | [ON UPDATE <referential_action>] [ON DELETE <referential_action>] } [<constraint_characteristics>]
).
Fields
foreign_table: ObjectName
Check(Expr)
CHECK (<expr>)
DialectSpecific(Vec<Token>)
Dialect-specific options, such as:
- MySQL’s
AUTO_INCREMENT
or SQLite’sAUTOINCREMENT
- …
CharacterSet(ObjectName)
Comment(String)
OnUpdate(Expr)
Generated
Generated
s are modifiers that follow a column definition in a CREATE TABLE
statement.
Fields
generated_as: GeneratedAs
Options(Vec<SqlOption>)
BigQuery specific: Explicit column options in a view 1 or table 2 Syntax
OPTIONS(description="field desc")
Identity(IdentityPropertyKind)
Creates an identity or an autoincrement column in a table. Syntax
{ IDENTITY | AUTOINCREMENT } [ (seed , increment) | START num INCREMENT num ] [ ORDER | NOORDER ]
OnConflict(Keyword)
SQLite specific: ON CONFLICT option on column definition https://www.sqlite.org/lang_conflict.html
Policy(ColumnPolicy)
Snowflake specific: an option of specifying security masking or projection policy to set on a column. Syntax:
[ WITH ] MASKING POLICY <policy_name> [ USING ( <col_name> , <cond_col1> , ... ) ]
[ WITH ] PROJECTION POLICY <policy_name>
Tags(TagsColumnOption)
Snowflake specific: Specifies the tag name and the tag string value. Syntax:
[ WITH ] TAG ( <tag_name> = '<tag_value>' [ , <tag_name> = '<tag_value>' , ... ] )
Trait Implementations§
§impl Clone for ColumnOption
impl Clone for ColumnOption
§fn clone(&self) -> ColumnOption
fn clone(&self) -> ColumnOption
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read more§impl Debug for ColumnOption
impl Debug for ColumnOption
§impl<'de> Deserialize<'de> for ColumnOption
impl<'de> Deserialize<'de> for ColumnOption
§fn deserialize<__D>(
__deserializer: __D,
) -> Result<ColumnOption, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<ColumnOption, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
§impl Display for ColumnOption
impl Display for ColumnOption
§impl Hash for ColumnOption
impl Hash for ColumnOption
§impl Ord for ColumnOption
impl Ord for ColumnOption
§impl PartialEq for ColumnOption
impl PartialEq for ColumnOption
§impl PartialOrd for ColumnOption
impl PartialOrd for ColumnOption
§impl Serialize for ColumnOption
impl Serialize for ColumnOption
§fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
§impl Visit for ColumnOption
impl Visit for ColumnOption
§impl VisitMut for ColumnOption
impl VisitMut for ColumnOption
fn visit<V>(&mut self, visitor: &mut V) -> ControlFlow<<V as VisitorMut>::Break>where
V: VisitorMut,
impl Eq for ColumnOption
impl StructuralPartialEq for ColumnOption
Auto Trait Implementations§
impl Freeze for ColumnOption
impl RefUnwindSafe for ColumnOption
impl Send for ColumnOption
impl Sync for ColumnOption
impl Unpin for ColumnOption
impl UnwindSafe for ColumnOption
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T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
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fn borrow_mut(&mut self) -> &mut T
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impl<T> CallHasher for T
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impl<Q, K> Comparable<K> for Q
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fn convert_vec(value: Vec<Self>) -> Vec<T>
fn convert_vec_box(value: Vec<Box<Self>>) -> Vec<Box<T>>
fn convert_matrix(value: Vec<Vec<Self>>) -> Vec<Vec<T>>
fn convert_option(value: Option<Self>) -> Option<T>
fn convert_option_box(value: Option<Box<Self>>) -> Option<Box<T>>
fn convert_option_vec(value: Option<Vec<Self>>) -> Option<Vec<T>>
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