Method parse_table_from_source_columns

src/sql-parser/src/parser.rs:5255–5338

(
        &mut self,
    )

    }

    fn parse_table_from_source_columns(
        &mut self,
    ) -> Result<(TableFromSourceColumns<Raw>, Vec<TableConstraint<Raw>>), ParserError> {
        let mut constraints = vec![];

        if !self.consume_token(&Token::LParen) {
            return Ok((TableFromSourceColumns::NotSpecified, constraints));
        }
        if self.consume_token(&Token::RParen) {
            // Tables with zero columns are a PostgreSQL extension.
            return Ok((TableFromSourceColumns::NotSpecified, constraints));
        }

        let mut column_names = vec![];
        let mut column_defs = vec![];
        loop {
            if let Some(constraint) = self.parse_optional_table_constraint()? {
                constraints.push(constraint);
            } else if let Some(column_name) = self.consume_identifier()? {
                let next_token = self.peek_token();
                match next_token {
                    Some(Token::Comma) | Some(Token::RParen) => {
                        column_names.push(column_name);
                    }
                    _ => {
                        let data_type = self.parse_data_type()?;
                        let collation = if self.parse_keyword(COLLATE) {
                            Some(self.parse_item_name()?)
                        } else {
                            None
                        };
                        let mut options = vec![];
                        loop {
                            match self.peek_token() {
                                None | Some(Token::Comma) | Some(Token::RParen) => break,
                                _ => options.push(self.parse_column_option_def()?),
                            }
                        }

                        column_defs.push(ColumnDef {
                            name: column_name,
                            data_type,
                            collation,
                            options,
                        });
                    }
                }
            } else {
                return self.expected(
                    self.peek_pos(),
                    "column name or constraint definition",
                    self.peek_token(),
                );
            }
            if self.consume_token(&Token::Comma) {
                // Continue.
            } else if self.consume_token(&Token::RParen) {
                break;