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Support IGNORE|RESPECT NULLs clause in window functions (#998)

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Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>
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yuval-illumex 2023-10-24 16:45:59 +03:00 • committed by GitHub
parent 8262abcd31
commit b89edaa98b
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14 changed files with 124 additions and 0 deletions
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16
src/parser/mod.rs
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@ -785,6 +785,7 @@ impl<'a> Parser<'a> {
Ok(Expr::Function(Function {
name: ObjectName(vec![w.to_ident()]),
args: vec![],
null_treatment: None,
filter: None,
over: None,
distinct: false,
@ -987,6 +988,19 @@ impl<'a> Parser<'a> {
} else {
None
};
let null_treatment = match self.parse_one_of_keywords(&[Keyword::RESPECT, Keyword::IGNORE])
{
Some(keyword) => {
self.expect_keyword(Keyword::NULLS)?;
match keyword {
Keyword::RESPECT => Some(NullTreatment::RespectNulls),
Keyword::IGNORE => Some(NullTreatment::IgnoreNulls),
_ => None,
}
}
None => None,
};
let over = if self.parse_keyword(Keyword::OVER) {
if self.consume_token(&Token::LParen) {
let window_spec = self.parse_window_spec()?;
@ -1000,6 +1014,7 @@ impl<'a> Parser<'a> {
Ok(Expr::Function(Function {
name,
args,
null_treatment,
filter,
over,
distinct,
@ -1018,6 +1033,7 @@ impl<'a> Parser<'a> {
Ok(Expr::Function(Function {
name,
args,
null_treatment: None,
filter: None,
over: None,
distinct: false,