uqa_sql/ast/
sequence_declaration.rs

1//
2// Unified Query Algebra
3//
4// Copyright (c) 2023-2026 Cognica, Inc.
5//
6
7//! The options a sequence declaration writes, as written.
8
9use super::ColumnType;
10use serde::{Deserialize, Serialize};
11
12/// The options a `CREATE SEQUENCE`, or the declaration of an identity column, writes, kept as written. `PostgreSQL` reads their values and derives the omitted ones when it creates the sequence, in an order of its own.
13#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
14pub struct SequenceDeclaration {
15    /// `AS type`.
16    pub data_type: Option<ColumnType>,
17    /// `INCREMENT [BY] value`.
18    pub increment: Option<SequenceOptionValue>,
19    /// `CYCLE` or `NO CYCLE`.
20    pub cycle: Option<bool>,
21    /// `MAXVALUE value`, or `NO MAXVALUE` as an absent value.
22    pub max_value: Option<SequenceOptionValue>,
23    /// `MINVALUE value`, or `NO MINVALUE` as an absent value.
24    pub min_value: Option<SequenceOptionValue>,
25    /// `START [WITH] value`.
26    pub start: Option<SequenceOptionValue>,
27    /// `RESTART [WITH value]`, a bare `RESTART` as an absent value: the value the first `nextval` returns, instead of the start.
28    pub restart: Option<SequenceOptionValue>,
29    /// `CACHE value`.
30    pub cache: Option<SequenceOptionValue>,
31    /// `OWNED BY`, as the written name: `NONE`, or a relation and one of its columns.
32    pub owned_by: Option<Vec<String>>,
33}
34
35/// A sequence option's value as the parser keeps it, before it is read as a 64-bit integer.
36#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
37pub enum SequenceOptionValue {
38    /// No value: `NO MINVALUE`, `NO MAXVALUE` or a bare `RESTART`.
39    Absent,
40    /// An integer the parser read.
41    Integer(i64),
42    /// A number the parser kept as written: one outside the 32-bit range, or with a fraction or an exponent.
43    Text(String),
44}
uqa_sql/ast/sequence_declaration.rs

uqa_sql/ast/
sequence_declaration.rs
