fix(postgresql): change partitionboundspec from to grammar

Author: LuckyFBB

src/grammar/postgresql/PostgreSqlParser.g4

@@ -505,10 +505,20 @@ reloption_elem
 partitionboundspec
     : KW_FOR KW_VALUES KW_WITH OPEN_PAREN KW_MODULUS numericonly COMMA KW_REMAINDER numericonly CLOSE_PAREN
     | KW_FOR KW_VALUES KW_IN execute_param_clause
-    | KW_FOR KW_VALUES KW_FROM execute_param_clause KW_TO execute_param_clause
+    | KW_FOR KW_VALUES KW_FROM partitionboundexpr KW_TO partitionboundexpr
     | KW_DEFAULT
     ;
 
+partitionboundexpr
+    : OPEN_PAREN partitionboundchoose (COMMA partitionboundchoose)* CLOSE_PAREN
+    ;
+
+partitionboundchoose
+    : expr_list
+    | KW_MINVALUE
+    | KW_MAXVALUE
+    ;
+
 altercompositetypestmt
     : KW_ALTER KW_TYPE any_name alter_type_cmd (COMMA alter_type_cmd)*
     ;