iffyio commented on code in PR #1476:
URL:
https://github.com/apache/datafusion-sqlparser-rs/pull/1476#discussion_r1835448776
##########
src/parser/mod.rs:
##########
@@ -7156,6 +7156,35 @@ impl<'a> Parser<'a> {
partition,
with_name,
}
+ } else if self.dialect.supports_alter_table_update() &&
self.parse_keyword(Keyword::UPDATE)
+ {
+ let mut assignments = vec![];
Review Comment:
One minor request, could we move this new block to its own function to keep
the branch of the current function smaller/more-focused?
##########
src/parser/mod.rs:
##########
@@ -7156,6 +7156,35 @@ impl<'a> Parser<'a> {
partition,
with_name,
}
+ } else if self.dialect.supports_alter_table_update() &&
self.parse_keyword(Keyword::UPDATE)
+ {
+ let mut assignments = vec![];
+ loop {
+ let target = self.parse_assignment_target()?;
+ self.expect_token(&Token::Eq)?;
+ // NOTE: Maybe it's better to save the index before
parse_subexpr to do a real look
Review Comment:
Ah so regarding the earlier comment, I think what we could do would be to
make `self.parse_assignment` reusable:
```rust
pub fn parse_assignment(&mut self) -> Result<Assignment, ParserError> {
self.parse_assignment_with_prec(self.dialect.prec_unknown())
}
fn parse_assignment_with_precedence(self, precedence: u8) ->
Result<Assignment, ParserError> {
let target = self.parse_assignment_target()?;
self.expect_token(&Token::Eq)?;
let value = self.parse_subexpr(precedence)?;
Ok(Assignment { target, value })
}
```
That would make it possible to use `parse_comma_separated` as well, since
the issue seems to be with the `IN PARTITION` precedence when parsing the
assigned expr
##########
src/parser/mod.rs:
##########
@@ -1081,7 +1081,7 @@ impl<'a> Parser<'a> {
self.parse_bigquery_struct_literal()
}
Keyword::PRIOR if matches!(self.state, ParserState::ConnectBy)
=> {
- let expr =
self.parse_subexpr(self.dialect.prec_value(Precedence::PlusMinus))?;
+ let expr =
self.parse_subexpr(self.dialect.prec_value(Precedence::Pipe))?;
Review Comment:
Oh was there a reason for this change?
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