Support PostgreSQL json_to_record / jsonb_to_record syntax

[guspower]

Current state:

PostgreSQL json_to_record / jsonb_to_record syntax raises a ParseError:

use sqlparser::dialect::PostgreSqlDialect;
use sqlparser::parser::Parser;

fn main() {
    let sql = r#"select * from json_to_record('{"a":1,"b":[1,2,3],"c":[1,2,3],"e":"bar"}') as x(a int, b text, c int[], d text);"#;
    let dialect = PostgreSqlDialect {};
    let ast = Parser::parse_sql(&dialect, sql).unwrap();

    println!("AST: {:?}", ast);
}

Future state:

json_to_record / jsonb_to_record syntax supported.

Additional:

As per the postgresql docs - search for json_to_record (no deep link)