Struct Side 

pub struct Side {
    pub table: String,
    pub columns: Vec<String>,
}

One side of a relationship: a table and the columns of its key.

Fields

table: String

The table’s name as the catalog holds it.

columns: Vec<String>

The key columns, in order. More than one is a composite key, resolved by the same key map over a folded composite, a column at a time, the way rudb-exec already folds a group key.

Implementations

impl Side

pub fn new(table: impl Into<String>, column: impl Into<String>) -> Self

A side over a single column, which is every relationship TPC-H needs.

pub fn composite(table: impl Into<String>, columns: Vec<String>) -> Result<Self>

A side over a composite key.

Errors

If the column list is empty. A key over no columns is not a key, and catching it here is what keeps it from becoming a relationship that matches every row against every row.

Trait Implementations

impl Clone for Side

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Side

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

Formats the value using the given formatter.

impl Display for Side

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

Formats the value using the given formatter.

impl Eq for Side

impl PartialEq for Side

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Side