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Support for Map values in ClickHouse settings (#1896)
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Co-authored-by: Ifeanyi Ubah <ify1992@yahoo.com>
This commit is contained in:
Sergey Olontsev 2025-06-28 07:13:11 +01:00 • committed by GitHub
parent 6c38cdcadb
commit 50c605a471
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5 changed files with 112 additions and 43 deletions
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17
src/parser/mod.rs
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@ -2770,7 +2770,7 @@ impl<'a> Parser<'a> {
if self.dialect.supports_dictionary_syntax() {
self.prev_token(); // Put back the '{'
return self.parse_duckdb_struct_literal();
return self.parse_dictionary();
}
self.expected("an expression", token)
@ -3139,7 +3139,7 @@ impl<'a> Parser<'a> {
Ok(fields)
}
/// DuckDB specific: Parse a duckdb [dictionary]
/// DuckDB and ClickHouse specific: Parse a duckdb [dictionary] or a clickhouse [map] setting
///
/// Syntax:
///
@ -3148,18 +3148,18 @@ impl<'a> Parser<'a> {
/// ```
///
/// [dictionary]: https://duckdb.org/docs/sql/data_types/struct#creating-structs
fn parse_duckdb_struct_literal(&mut self) -> Result<Expr, ParserError> {
/// [map]: https://clickhouse.com/docs/operations/settings/settings#additional_table_filters
fn parse_dictionary(&mut self) -> Result<Expr, ParserError> {
self.expect_token(&Token::LBrace)?;
let fields =
self.parse_comma_separated0(Self::parse_duckdb_dictionary_field, Token::RBrace)?;
let fields = self.parse_comma_separated0(Self::parse_dictionary_field, Token::RBrace)?;
self.expect_token(&Token::RBrace)?;
Ok(Expr::Dictionary(fields))
}
/// Parse a field for a duckdb [dictionary]
/// Parse a field for a duckdb [dictionary] or a clickhouse [map] setting
///
/// Syntax
///
@ -3168,7 +3168,8 @@ impl<'a> Parser<'a> {
/// ```
///
/// [dictionary]: https://duckdb.org/docs/sql/data_types/struct#creating-structs
fn parse_duckdb_dictionary_field(&mut self) -> Result<DictionaryField, ParserError> {
/// [map]: https://clickhouse.com/docs/operations/settings/settings#additional_table_filters
fn parse_dictionary_field(&mut self) -> Result<DictionaryField, ParserError> {
let key = self.parse_identifier()?;
self.expect_token(&Token::Colon)?;
@ -11216,7 +11217,7 @@ impl<'a> Parser<'a> {
let key_values = self.parse_comma_separated(|p| {
let key = p.parse_identifier()?;
p.expect_token(&Token::Eq)?;
let value = p.parse_value()?.value;
let value = p.parse_expr()?;
Ok(Setting { key, value })
})?;
Some(key_values)