Struct sqlite_loadable::table::IndexInfo

pub struct IndexInfo { /* private fields */ }

Wraps the raw sqlite3_index_info C struct, which represents the possible constraints and outputs the xBestIndex method should use and return. https://www.sqlite.org/c3ref/index_info.html

Implementations

impl IndexInfo

pub fn idx_flag(&self) -> i32

“Mask of SQLITE_INDEX_SCAN_* flags”

pub fn constraints(&self) -> Vec<Constraint>

pub fn order_bys(&self) -> Vec<OrderBy>

pub fn set_idxnum(&mut self, value: i32)

pub fn set_idxstr(&mut self, value: &str) -> Result<()>

pub fn set_estimated_rows(&mut self, value: i64)

pub fn set_estimated_cost(&mut self, value: f64)

“The estimatedCost field should be set to the estimated number of disk access operations required to execute this query against the virtual table.” https://www.sqlite.org/vtab.html#outputs

pub fn columns_used(&self) -> u64

pub fn distinct(&self) -> i32

Trait Implementations

impl Debug for IndexInfo

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

Formats the value using the given formatter.