Struct MultiReader 

pub struct MultiReader { /* private fields */ }

Manual reader for 5+ result sets — or when typed tuples are insufficient.

Each read_* call consumes the next result set in order. Calling more times than there are result sets returns an empty result (not an error).

Implementations

impl MultiReader

pub fn read_list<T: SqlEntity>(&mut self) -> Result<Vec<T>, SqlError>

Read all rows of the next result set as Vec<T>.

pub fn read_single<T: SqlEntity>(&mut self) -> Result<Option<T>, SqlError>

Read the first row of the next result set as Option<T>.

pub fn read_required<T: SqlEntity>(&mut self) -> Result<T, SqlError>

Read the first row of the next result set, error if missing.

pub fn read_scalar<S>(&mut self) -> Result<Option<S>, SqlError>

where S: FromStr, S::Err: Display,

Read a scalar from the first column of the first row of the next set.

pub fn read_raw(&mut self) -> Vec<OdbcRow>

Read raw rows of the next result set without mapping.

Trait Implementations

impl Debug for MultiReader

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

Formats the value using the given formatter.