Method parse_timestamp_precision

src/sql-parser/src/parser.rs:7167–7175

parses the precision in timestamp( ) and timestamptz( )

(&mut self)

    // parses the precision in timestamp(<precision>) and timestamptz(<precision>)
    fn parse_timestamp_precision(&mut self) -> Result<Vec<i64>, ParserError> {
        if self.consume_token(&Token::LParen) {
            let typ_mod = self.parse_literal_int()?;
            self.expect_token(&Token::RParen)?;
            Ok(vec![typ_mod])
        } else {
            Ok(vec![])
        }
    }

    /// Parse `AS identifier` (or simply `identifier` if it's not a reserved keyword)
    /// Some examples with aliases: `SELECT 1 foo`, `SELECT COUNT(*) AS cnt`,