1 files changed, 17 insertions, 2 deletions
diff --git a/sqlglot/expressions.py b/sqlglot/expressions.py
index 98afddc..1c3d42a 100644
--- a/sqlglot/expressions.py
+++ b/sqlglot/expressions.py
@@ -1321,7 +1321,13 @@ class GeneratedAsIdentityColumnConstraint(ColumnConstraintKind):
 
 # https://dev.mysql.com/doc/refman/8.0/en/create-table.html
 class IndexColumnConstraint(ColumnConstraintKind):
-    arg_types = {"this": False, "schema": True, "kind": False, "type": False, "options": False}
+    arg_types = {
+        "this": False,
+        "schema": True,
+        "kind": False,
+        "index_type": False,
+        "options": False,
+    }
 
 
 class InlineLengthColumnConstraint(ColumnConstraintKind):
@@ -1354,7 +1360,7 @@ class TitleColumnConstraint(ColumnConstraintKind):
 
 
 class UniqueColumnConstraint(ColumnConstraintKind):
-    arg_types = {"this": False}
+    arg_types = {"this": False, "index_type": False}
 
 
 class UppercaseColumnConstraint(ColumnConstraintKind):
@@ -4366,6 +4372,10 @@ class Extract(Func):
     arg_types = {"this": True, "expression": True}
 
 
+class Timestamp(Func):
+    arg_types = {"this": False, "expression": False}
+
+
 class TimestampAdd(Func, TimeUnit):
     arg_types = {"this": True, "expression": True, "unit": False}
 
@@ -4579,6 +4589,11 @@ class JSONArrayContains(Binary, Predicate, Func):
     _sql_names = ["JSON_ARRAY_CONTAINS"]
 
 
+class ParseJSON(Func):
+    # BigQuery, Snowflake have PARSE_JSON, Presto has JSON_PARSE
+    _sql_names = ["PARSE_JSON", "JSON_PARSE"]
+
+
 class Least(Func):
     arg_types = {"this": True, "expressions": False}
     is_var_len_args = True