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Support Snowflake Update-From-Select (#1604)

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Co-authored-by: Ifeanyi Ubah <ify1992@yahoo.com>
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Yuval Shkolar 2024-12-24 17:00:59 +02:00 • committed by GitHub
parent 14cefc47ed
commit 024a878ee7
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6 changed files with 59 additions and 16 deletions
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17
src/parser/mod.rs
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@ -11791,15 +11791,20 @@ impl<'a> Parser<'a> {
pub fn parse_update(&mut self) -> Result<Statement, ParserError> {
let or = self.parse_conflict_clause();
let table = self.parse_table_and_joins()?;
self.expect_keyword(Keyword::SET)?;
let assignments = self.parse_comma_separated(Parser::parse_assignment)?;
let from = if self.parse_keyword(Keyword::FROM)
&& dialect_of!(self is GenericDialect | PostgreSqlDialect | DuckDbDialect | BigQueryDialect | SnowflakeDialect | RedshiftSqlDialect | MsSqlDialect | SQLiteDialect )
{
Some(self.parse_table_and_joins()?)
let from_before_set = if self.parse_keyword(Keyword::FROM) {
Some(UpdateTableFromKind::BeforeSet(
self.parse_table_and_joins()?,
))
} else {
None
};
self.expect_keyword(Keyword::SET)?;
let assignments = self.parse_comma_separated(Parser::parse_assignment)?;
let from = if from_before_set.is_none() && self.parse_keyword(Keyword::FROM) {
Some(UpdateTableFromKind::AfterSet(self.parse_table_and_joins()?))
} else {
from_before_set
};
let selection = if self.parse_keyword(Keyword::WHERE) {
Some(self.parse_expr()?)
} else {