pub struct RowSetFinishing {
    pub order_by: Vec<ColumnOrder>,
    pub limit: Option<usize>,
    pub offset: usize,
    pub project: Vec<usize>,
}
Expand description

Instructions for finishing the result of a query.

The primary reason for the existence of this structure and attendant code is that SQL’s ORDER BY requires sorting rows (as already implied by the keywords), whereas much of the rest of SQL is defined in terms of unordered multisets. But as it turns out, the same idea can be used to optimize trivial peeks.

Fields

order_by: Vec<ColumnOrder>

Order rows by the given columns.

limit: Option<usize>

Include only as many rows (after offset).

offset: usize

Omit as many rows.

project: Vec<usize>

Include only given columns.

Implementations

True if the finishing does nothing to any result set.

Applies finishing actions to a row set, and unrolls it to a unary representation.

Trait Implementations

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