Adding upstream version 18.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

sqlglot/dialects/hive.py

@@ -9,6 +9,7 @@ from sqlglot.dialects.dialect import (
     create_with_partitions_sql,
     format_time_lambda,
     if_sql,
+    is_parse_json,
     left_to_substring_sql,
     locate_to_strposition,
     max_or_greatest,
@@ -89,7 +90,7 @@ def _date_diff_sql(self: Hive.Generator, expression: exp.DateDiff) -> str:
 
 def _json_format_sql(self: Hive.Generator, expression: exp.JSONFormat) -> str:
     this = expression.this
-    if isinstance(this, exp.Cast) and this.is_type("json") and this.this.is_string:
+    if is_parse_json(this) and this.this.is_string:
         # Since FROM_JSON requires a nested type, we always wrap the json string with
         # an array to ensure that "naked" strings like "'a'" will be handled correctly
         wrapped_json = exp.Literal.string(f"[{this.this.name}]")
@@ -150,6 +151,7 @@ def _to_date_sql(self: Hive.Generator, expression: exp.TsOrDsToDate) -> str:
 class Hive(Dialect):
     ALIAS_POST_TABLESAMPLE = True
     IDENTIFIERS_CAN_START_WITH_DIGIT = True
+    SUPPORTS_USER_DEFINED_TYPES = False
 
     # https://spark.apache.org/docs/latest/sql-ref-identifier.html#description
     RESOLVES_IDENTIFIERS_AS_UPPERCASE = None
@@ -222,7 +224,6 @@ class Hive(Dialect):
     class Parser(parser.Parser):
         LOG_DEFAULTS_TO_LN = True
         STRICT_CAST = False
-        SUPPORTS_USER_DEFINED_TYPES = False
 
         FUNCTIONS = {
             **parser.Parser.FUNCTIONS,