Enum QueryError 

pub enum QueryError {
    PrimaryKeyConflict,
    UniqueConstraintViolation {
        field: String,
    },
    BrokenForeignKeyReference {
        table: String,
        key: Value,
    },
    ForeignKeyConstraintViolation {
        referencing_table: String,
        field: String,
    },
    UnknownColumn(String),
    MissingNonNullableField(String),
    TransactionNotFound,
    InvalidQuery(String),
    JoinInsideTypedSelect,
    ConstraintViolation(String),
    MemoryError(MemoryError),
    TableNotFound(String),
    RecordNotFound,
    SerializationError(String),
    Internal(String),
}

An enum representing possible errors that can occur during query operations.

Variants

PrimaryKeyConflict

The specified primary key value already exists in the table.

UniqueConstraintViolation

A unique constraint was violated (e.g., UNIQUE index, CHECK constraint, etc.)

Fields

field: String

BrokenForeignKeyReference

A foreign key references a non-existent record in another table.

Fields

table: String

key: Value

ForeignKeyConstraintViolation

Tried to delete or update a record that is referenced by another table’s foreign key.

Fields

referencing_table: String

field: String

UnknownColumn(String)

Tried to reference a column that does not exist in the table schema.

MissingNonNullableField(String)

Tried to insert a record missing non-nullable fields.

TransactionNotFound

The specified transaction was not found or has expired.

InvalidQuery(String)

Query contains syntactically or semantically invalid conditions.

JoinInsideTypedSelect

Join inside a typed select operation

ConstraintViolation(String)

Generic constraint violation (e.g., UNIQUE, CHECK, etc.)

MemoryError(MemoryError)

The memory allocator or memory manager failed to allocate or access stable memory.

TableNotFound(String)

The table or schema was not found.

RecordNotFound

The record identified by the given key or filter does not exist.

SerializationError(String)

Any low-level IO or serialization/deserialization issue.

Internal(String)

Generic catch-all error (for internal, unexpected conditions).

Trait Implementations

impl Debug for QueryError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QueryError

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for QueryError

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

Formats the value using the given formatter.

impl Error for QueryError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<QueryError> for DbmsError

fn from(source: QueryError) -> Self

Converts to this type from the input type.

impl Serialize for QueryError

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

where __S: Serializer,

Serialize this value into the given Serde serializer.