Struct UpdateByKey 

pub struct UpdateByKey {
    pub table: TableId,
    pub keys: Vec<Value>,
    pub assignments: Assignments,
    pub filter: Option<Expr>,
    pub condition: Option<Expr>,
    pub returning: Option<Vec<ColumnId>>,
}

Updates one or more records identified by primary key.

Used by key-value drivers. SQL drivers receive an equivalent UPDATE statement via QuerySql instead. Supports conditional updates and optionally returns the updated records.

Examples

use toasty_core::driver::operation::{UpdateByKey, Operation};

let op = UpdateByKey {
    table: table_id,
    keys: vec![key_value],
    assignments: assignments,
    filter: None,
    condition: None,
    returning: None,
};
let operation: Operation = op.into();

Fields

table: TableId

The table to update.

keys: Vec<Value>

Primary key values identifying the records to update.

assignments: Assignments

Column assignments describing how to modify the records.

filter: Option<Expr>

Optional filter expression. When set, only records whose key is in keys and that match this filter are updated.

condition: Option<Expr>

Optional precondition that must hold for the update to be applied. Unlike filter, a failed condition typically causes an error rather than silently skipping the row.

returning: Option<Vec<ColumnId>>

The columns to return for each updated row.

None returns the affected-row count. Some(columns) returns one record per updated row containing exactly these columns, in this order, in the ExecResponse. The engine builds this list explicitly, so the driver never has to infer which columns to return from the assignments.

Trait Implementations

impl Clone for UpdateByKey

fn clone(&self) -> UpdateByKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UpdateByKey

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

Formats the value using the given formatter.

impl From<UpdateByKey> for Operation

fn from(value: UpdateByKey) -> Self

Converts to this type from the input type.