Postgres driver: error on creating non-string properties #691

chicken@asteroid:~$ psql --host=localhost testdatabase root
Password for user root: 
psql (14.5 (Ubuntu 14.5-0ubuntu0.22.04.1), server 10.5)
Type "help" for help.

testdatabase=> CREATE VERTEX TYPE v;
     operation      | typeName 
--------------------+----------
 create vertex type | v
(1 row)

INSERT 0 1
testdatabase=> CREATE PROPERTY v.s STRING;
    operation    | typeName | propertyName 
-----------------+----------+--------------
 create property | v        | s
(1 row)

testdatabase=> CREATE PROPERTY v.i INTEGER;
    operation    | typeName | propertyName 
-----------------+----------+--------------
 create property | v        | i
(1 row)

testdatabase=> CREATE PROPERTY v.b BOOLEAN;
    operation    | typeName | propertyName 
-----------------+----------+--------------
 create property | v        | b
(1 row)

testdatabase=> CREATE PROPERTY v.sh SHORT;
    operation    | typeName | propertyName 
-----------------+----------+--------------
 create property | v        | sh
(1 row)

testdatabase=> CREATE PROPERTY v.d DOUBLE;
    operation    | typeName | propertyName 
-----------------+----------+--------------
 create property | v        | d
(1 row)

testdatabase=> CREATE PROPERTY v.da DATETIME;
    operation    | typeName | propertyName 
-----------------+----------+--------------
 create property | v        | da
(1 row)

testdatabase=> CREATE VERTEX v SET s="abc", i=1, b=true, sh=2, d=3.5, da="2022-12-20 18:00";
  s  | i |  b   | sh |   d   | da 
-----+---+------+----+-------+----
 abc |   | \x01 |    | @\x0C | 
(1 row)

INSERT 0 1
testdatabase=> {gremlin} g.V().hasLabel('v');
  s  | i |  b   | sh |   d   | da 
-----+---+------+----+-------+----
 abc |   | \x01 |    | @\x0C | 
(1 row)