Skip to content

Snowflake: parse sequence lifecycle commands #36

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
osipovartem merged 1 commit into from
Sep 21, 2026
+324 −6
Merged

Snowflake: parse sequence lifecycle commands #36

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
106 changes: 105 additions & 1 deletion src/ast/mod.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4255,6 +4255,15 @@ pub enum Statement {
show_options: ShowStatementOptions,
},
/// ```sql
/// SHOW SEQUENCES [ LIKE '<pattern>' ] [ IN { ACCOUNT | DATABASE | SCHEMA } ]
/// ```
/// Snowflake-specific statement.
/// <https://docs.snowflake.com/en/sql-reference/sql/show-sequences>
ShowSequences {
/// Additional options for filtering and scoping the sequence listing.
show_options: ShowStatementOptions,
},
/// ```sql
/// SHOW VIEWS
/// ```
ShowViews {
Expand Down Expand Up @@ -4720,6 +4729,18 @@ pub enum Statement {
name: ObjectName,
},
/// ```sql
/// DESC[RIBE] SEQUENCE <name>
/// ```
/// Snowflake-specific statement.
/// <https://docs.snowflake.com/en/sql-reference/sql/desc-sequence>
DescribeSequence {
/// `DESC | DESCRIBE` spelling used by the input statement.
describe_alias: DescribeAlias,
/// Sequence name.
#[cfg_attr(feature = "visitor", visit(with = "visit_relation"))]
name: ObjectName,
},
/// ```sql
/// [EXPLAIN | DESC | DESCRIBE] <statement>
/// ```
Explain {
Expand Down Expand Up @@ -4803,6 +4824,10 @@ pub enum Statement {
/// ```
/// Define a new sequence:
CreateSequence {
/// `OR REPLACE` flag.
or_replace: bool,
/// `OR ALTER` flag.
or_alter: bool,
/// Whether the sequence is temporary.
temporary: bool,
/// `IF NOT EXISTS` flag.
Expand All @@ -4816,6 +4841,19 @@ pub enum Statement {
/// Optional `OWNED BY` target.
owned_by: Option<ObjectName>,
},
/// ```sql
/// ALTER SEQUENCE [ IF EXISTS ] <name> { RENAME TO <new_name> | SET ... | UNSET COMMENT }
/// ```
/// Snowflake-specific statement.
AlterSequence {
/// `IF EXISTS` flag.
if_exists: bool,
/// Sequence name.
#[cfg_attr(feature = "visitor", visit(with = "visit_relation"))]
name: ObjectName,
/// Sequence alteration to perform.
operation: AlterSequenceOperation,
},
/// A `CREATE DOMAIN` statement.
CreateDomain(CreateDomain),
/// ```sql
Expand Down Expand Up @@ -5224,6 +5262,10 @@ impl fmt::Display for Statement {
describe_alias,
name,
} => write!(f, "{describe_alias} FILE FORMAT {name}"),
Statement::DescribeSequence {
describe_alias,
name,
} => write!(f, "{describe_alias} SEQUENCE {name}"),
Statement::Explain {
describe_alias,
verbose,
Expand Down Expand Up @@ -6041,6 +6083,9 @@ impl fmt::Display for Statement {
Statement::ShowFileFormats { show_options } => {
write!(f, "SHOW FILE FORMATS{show_options}")
}
Statement::ShowSequences { show_options } => {
write!(f, "SHOW SEQUENCES{show_options}")
}
Statement::ShowViews {
terse,
materialized,
Expand Down Expand Up @@ -6297,6 +6342,8 @@ impl fmt::Display for Statement {
}
}
Statement::CreateSequence {
or_replace,
or_alter,
temporary,
if_not_exists,
name,
Expand All @@ -6313,7 +6360,9 @@ impl fmt::Display for Statement {
};
write!(
f,
"CREATE {temporary}SEQUENCE {if_not_exists}{name}{as_type}",
"CREATE {or_replace}{or_alter}{temporary}SEQUENCE {if_not_exists}{name}{as_type}",
or_replace = if *or_replace { "OR REPLACE " } else { "" },
or_alter = if *or_alter { "OR ALTER " } else { "" },
if_not_exists = if *if_not_exists { "IF NOT EXISTS " } else { "" },
temporary = if *temporary { "TEMPORARY " } else { "" },
name = name,
Expand All @@ -6327,6 +6376,30 @@ impl fmt::Display for Statement {
}
write!(f, "")
}
Statement::AlterSequence {
if_exists,
name,
operation,
} => {
write!(
f,
"ALTER SEQUENCE {if_exists}{name}",
if_exists = if *if_exists { "IF EXISTS " } else { "" },
)?;
match operation {
AlterSequenceOperation::RenameTo { new_name } => {
write!(f, " RENAME TO {new_name}")
}
AlterSequenceOperation::SetOptions(options) => {
f.write_str(" SET")?;
for option in options {
write!(f, "{option}")?;
}
Ok(())
}
AlterSequenceOperation::UnsetComment => f.write_str(" UNSET COMMENT"),
}
}
Statement::CreateStage {
or_replace,
temporary,
Expand Down Expand Up @@ -6682,6 +6755,10 @@ pub enum SequenceOptions {
Cache(Expr),
/// `CYCLE` or `NO CYCLE` option.
Cycle(bool),
/// Snowflake `ORDER` or `NOORDER` option.
Order(bool),
/// Snowflake sequence comment.
Comment(String),
}

impl fmt::Display for SequenceOptions {
Expand Down Expand Up @@ -6721,10 +6798,37 @@ impl fmt::Display for SequenceOptions {
SequenceOptions::Cycle(no) => {
write!(f, " {}CYCLE", if *no { "NO " } else { "" })
}
SequenceOptions::Order(ordered) => {
f.write_str(if *ordered { " ORDER" } else { " NOORDER" })
}
SequenceOptions::Comment(comment) => {
write!(
f,
" COMMENT = '{}'",
value::escape_single_quote_string(comment)
)
}
}
}
}

/// An operation supported by Snowflake's `ALTER SEQUENCE` statement.
#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
pub enum AlterSequenceOperation {
/// Rename a sequence.
RenameTo {
/// New sequence name.
#[cfg_attr(feature = "visitor", visit(with = "visit_relation"))]
new_name: ObjectName,
},
/// Set one or more sequence properties.
SetOptions(Vec<SequenceOptions>),
/// Remove the sequence comment.
UnsetComment,
}

/// Assignment for a `SET` statement (name [=|TO] value)
#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
Expand Down
3 changes: 3 additions & 0 deletions src/ast/spans.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -451,6 +451,7 @@ impl Spanned for Statement {
Statement::ShowTables { .. } => Span::empty(),
Statement::ShowStages { .. } => Span::empty(),
Statement::ShowFileFormats { .. } => Span::empty(),
Statement::ShowSequences { .. } => Span::empty(),
Statement::ShowCollation { .. } => Span::empty(),
Statement::ShowCharset { .. } => Span::empty(),
Statement::Use(u) => u.span(),
Expand All @@ -470,6 +471,7 @@ impl Spanned for Statement {
Statement::CreateStage { .. } => Span::empty(),
Statement::AlterStage { .. } => Span::empty(),
Statement::AlterFileFormat { .. } => Span::empty(),
Statement::AlterSequence { .. } => Span::empty(),
Statement::CreateFileFormat { .. } => Span::empty(),
Statement::Assert { .. } => Span::empty(),
Statement::Grant { .. } => Span::empty(),
Expand All @@ -482,6 +484,7 @@ impl Spanned for Statement {
Statement::ExplainTable { .. } => Span::empty(),
Statement::DescribeStage { .. } => Span::empty(),
Statement::DescribeFileFormat { .. } => Span::empty(),
Statement::DescribeSequence { .. } => Span::empty(),
Statement::Explain { .. } => Span::empty(),
Statement::Savepoint { .. } => Span::empty(),
Statement::ReleaseSavepoint { .. } => Span::empty(),
Expand Down
Loading
Loading