Struct tinybase::query_builder::QueryBuilder

pub struct QueryBuilder<T>where
    T: TableType + 'static,{ /* private fields */ }

Builder for building and executing queries.

Implementations

impl<T> QueryBuilder<T>where T: TableType,

pub fn new(table: &Table<T>) -> Self

Creates a new query builder for the given table.

Arguments

• table - The table to build the query for.

pub fn with_condition<C: Into<QueryCondition<T>>>(self, condition: C) -> Self

Adds a query condition to the query builder. This will overwrite the previous condition (if set).

Arguments

• condition - The condition to add to the query builder.

pub fn select(self) -> DbResult<Vec<Record<T>>>

Executes the query and returns the selected records.

Returns

All selected Record instances.

pub fn update(self, updater: fn(_: T) -> T) -> DbResult<Vec<Record<T>>>

Updates the records in the table based on the query condition and new value.

Arguments

• updater - Closure to generate the new data based on the old data.

Returns

All updated Record instances.

pub fn delete(self) -> DbResult<Vec<Record<T>>>

Deletes the records from the table based on the query condition.

Returns

All deleted Record instances.