Add scalar type declarations for some unexposed Postgres types

Add text `json` (counterpart to `jsonb`) and base variants of
date/time/interval types.

edb/api/types.txt

@@ -49,3 +49,9 @@
 00000000-0000-0000-0000-000000000112 std::cal::date_duration
 
 00000000-0000-0000-0000-000000000130 cfg::memory
+
+00000000-0000-0000-0000-000001000001 std::pg::json
+00000000-0000-0000-0000-000001000002 std::pg::timestamptz
+00000000-0000-0000-0000-000001000003 std::pg::timestamp
+00000000-0000-0000-0000-000001000004 std::pg::date
+00000000-0000-0000-0000-000001000005 std::pg::interval

edb/lib/pg.edgeql

@@ -84,3 +84,9 @@ create index match for std::cal::local_date using std::pg::brin;
 create index match for std::cal::local_time using std::pg::brin;
 create index match for std::cal::relative_duration using std::pg::brin;
 create index match for std::cal::date_duration using std::pg::brin;
+
+create scalar type std::pg::json extending std::anyscalar;
+create scalar type std::pg::timestamptz extending std::anycontiguous;
+create scalar type std::pg::timestamp extending std::anycontiguous;
+create scalar type std::pg::date extending std::anydiscrete;
+create scalar type std::pg::interval extending std::anycontiguous;

edb/pgsql/types.py

@@ -68,6 +68,12 @@
         ('edgedbt', 'date_duration_t'),
 
     s_obj.get_known_type_id('cfg::memory'): ('edgedbt', 'memory_t'),
+
+    s_obj.get_known_type_id('std::pg::json'): ('json',),
+    s_obj.get_known_type_id('std::pg::timestamptz'): ('timestamptz',),
+    s_obj.get_known_type_id('std::pg::timestamp'): ('timestamp',),
+    s_obj.get_known_type_id('std::pg::date'): ('date',),
+    s_obj.get_known_type_id('std::pg::interval'): ('interval',),
 }
 
 type_to_range_name_map = {
@@ -85,6 +91,9 @@
     # custom range is a big hassle, and daterange already has the
     # correct canonicalization function
     ('edgedbt', 'date_t'): ('daterange',),
+    ('timestamptz',): ('tstzrange',),
+    ('timestamp',): ('tsrange',),
+    ('date',): ('daterange',),
 }
 
 # Construct a multirange map based on type_to_range_name_map by replacing
@@ -143,6 +152,8 @@
 
     'edgedbt.memory_t': sn.QualName('cfg', 'memory'),
     'memory_t': sn.QualName('cfg', 'memory'),
+
+    'json': sn.QualName('std::pg', 'json'),
 }
 
 pg_tsvector_typeref = irast.TypeRef(

edb/schema/_types.py

@@ -66,4 +66,14 @@
         UUID('00000000-0000-0000-0000-000000000112'),
     sn.name_from_string('cfg::memory'):
         UUID('00000000-0000-0000-0000-000000000130'),
+    sn.name_from_string('std::pg::json'):
+        UUID('00000000-0000-0000-0000-000001000001'),
+    sn.name_from_string('std::pg::timestamptz'):
+        UUID('00000000-0000-0000-0000-000001000002'),
+    sn.name_from_string('std::pg::timestamp'):
+        UUID('00000000-0000-0000-0000-000001000003'),
+    sn.name_from_string('std::pg::date'):
+        UUID('00000000-0000-0000-0000-000001000004'),
+    sn.name_from_string('std::pg::interval'):
+        UUID('00000000-0000-0000-0000-000001000005'),
 }

edb/server/dbview/dbview.pyx

@@ -1442,7 +1442,7 @@ cdef class DatabaseConnectionView:
                 edb_type_expr = self._db.backend_id_to_name.get(toid)
                 if edb_type_expr is None:
                     raise errors.UnsupportedFeatureError(
-                        f"unsupported SQL type in column \"{col}\""
+                        f"unsupported SQL type in column \"{col}\" "
                         f"with type OID {toid}"
                     )
 

edb/tools/gen_types.py

@@ -63,7 +63,7 @@ def main(*, stdout: bool):
         f'\n\n\n'
         f'from __future__ import annotations'
         f'\n'
-        f'from typing import *  # NoQA'
+        f'from typing import Type'
         f'\n\n\n'
         f'import uuid'
         f'\n\n'