pub struct Json;
Expand description
The JSON SQL type. This type can only be used with feature = "serde_json"
For postgresql you should normally prefer Jsonb
instead,
for the reasons discussed there.
ToSql
impls
FromSql
impls
Trait Implementations
sourceimpl<'expr> AsExpression<Json> for &'expr Value
Available on crate feature serde_json
and (crate features postgres_backend
or mysql_backend
) only.
impl<'expr> AsExpression<Json> for &'expr Value
Available on crate feature
serde_json
and (crate features postgres_backend
or mysql_backend
) only.type Expression = Bound<Json, &'expr Value>
type Expression = Bound<Json, &'expr Value>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl<'expr2, 'expr> AsExpression<Json> for &'expr2 &'expr Value
Available on crate feature serde_json
and (crate features postgres_backend
or mysql_backend
) only.
impl<'expr2, 'expr> AsExpression<Json> for &'expr2 &'expr Value
Available on crate feature
serde_json
and (crate features postgres_backend
or mysql_backend
) only.type Expression = Bound<Json, &'expr2 &'expr Value>
type Expression = Bound<Json, &'expr2 &'expr Value>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl AsExpression<Json> for Value
Available on crate feature serde_json
and (crate features postgres_backend
or mysql_backend
) only.
impl AsExpression<Json> for Value
Available on crate feature
serde_json
and (crate features postgres_backend
or mysql_backend
) only.type Expression = Bound<Json, Value>
type Expression = Bound<Json, Value>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl FromSql<Json, Mysql> for Value
Available on crate features serde_json
and mysql_backend
only.
impl FromSql<Json, Mysql> for Value
Available on crate features
serde_json
and mysql_backend
only.sourcefn from_sql(value: MysqlValue<'_>) -> Result<Self>
fn from_sql(value: MysqlValue<'_>) -> Result<Self>
See the trait documentation.
sourceimpl FromSql<Json, Pg> for Value
Available on crate features serde_json
and postgres_backend
only.
impl FromSql<Json, Pg> for Value
Available on crate features
serde_json
and postgres_backend
only.sourceimpl HasSqlType<Json> for Mysql
impl HasSqlType<Json> for Mysql
sourceimpl HasSqlType<Json> for Pg
impl HasSqlType<Json> for Pg
sourcefn metadata(_: &mut Self::MetadataLookup) -> PgTypeMetadata
fn metadata(_: &mut Self::MetadataLookup) -> PgTypeMetadata
Fetch the metadata for the given type Read more
sourceimpl QueryId for Json
impl QueryId for Json
sourceconst HAS_STATIC_QUERY_ID: bool = true
const HAS_STATIC_QUERY_ID: bool = true
Can the SQL generated by
Self
be uniquely identified by its type? Read moresourceimpl ToSql<Json, Mysql> for Value
Available on crate features serde_json
and mysql_backend
only.
impl ToSql<Json, Mysql> for Value
Available on crate features
serde_json
and mysql_backend
only.sourceimpl ToSql<Json, Pg> for Value
Available on crate features serde_json
and postgres_backend
only.
impl ToSql<Json, Pg> for Value
Available on crate features
serde_json
and postgres_backend
only.impl Copy for Json
impl SingleValue for Json
Auto Trait Implementations
impl RefUnwindSafe for Json
impl Send for Json
impl Sync for Json
impl Unpin for Json
impl UnwindSafe for Json
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> IntoNotNullable for Twhere
T: SqlType<IsNull = NotNull>,
impl<T> IntoNotNullable for Twhere
T: SqlType<IsNull = NotNull>,
type NotNullable = T
type NotNullable = T
The not nullable representation of this type. Read more
sourceimpl<T> IntoNullable for Twhere
T: SqlType<IsNull = NotNull> + SingleValue,
impl<T> IntoNullable for Twhere
T: SqlType<IsNull = NotNull> + SingleValue,
sourceimpl<T> IntoSql for T
impl<T> IntoSql for T
sourcefn into_sql<T>(self) -> AsExprOf<Self, T>where
Self: AsExpression<T> + Sized,
T: SqlType + TypedExpressionType,
fn into_sql<T>(self) -> AsExprOf<Self, T>where
Self: AsExpression<T> + Sized,
T: SqlType + TypedExpressionType,
Convert
self
to an expression for Diesel’s query builder. Read moresourcefn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>where
&'a Self: AsExpression<T>,
T: SqlType + TypedExpressionType,
fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>where
&'a Self: AsExpression<T>,
T: SqlType + TypedExpressionType,
Convert
&self
to an expression for Diesel’s query builder. Read more