Enum QueryError 

pub enum QueryError {
    PrimaryKeyConflict,
    BrokenForeignKeyReference {
        table: &'static str,
        key: Value,
    },
    ForeignKeyConstraintViolation {
        referencing_table: &'static str,
        field: &'static str,
    },
    UnknownColumn(String),
    MissingNonNullableField(&'static str),
    TypeMismatch {
        column: &'static str,
        expected: &'static str,
        found: &'static str,
    },
    TransactionNotFound,
    InvalidQuery(String),
    ConstraintViolation(String),
    MemoryError(MemoryError),
    TableNotFound(&'static str),
    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.

BrokenForeignKeyReference

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

Fields

table: &'static str

key: Value

ForeignKeyConstraintViolation

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

Fields

referencing_table: &'static str

field: &'static str

UnknownColumn(String)

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

MissingNonNullableField(&'static str)

Tried to insert a record missing non-nullable fields.

TypeMismatch

Tried to cast or compare values of incompatible types (e.g. Integer vs Text).

Fields

column: &'static str

expected: &'static str

found: &'static str

TransactionNotFound

The specified transaction was not found or has expired.

InvalidQuery(String)

Query contains syntactically or semantically invalid conditions.

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(&'static str)

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 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 IcDbmsError

fn from(source: QueryError) -> Self

Converts to this type from the input type.