text: --  @testpoint:openGauss关键字max(非保留),作为列名不带双引号，max大小写混合，建表成功
  drop table if exists Explain_test;
  create table Explain_test(
  	c_id int, c_int int, c_integer integer, c_bool int, c_boolean int, c_bigint integer,
  	c_real real, c_double real,
  	c_decimal decimal(38), c_number number(38), c_numeric numeric(38),
  	c_char char(50) default null, c_varchar varchar(20), c_varchar2 varchar2(4000),
  	c_date date, c_datetime date, c_timestamp timestamp,
  	Max text
  )
  PARTITION BY RANGE (c_integer)
  (
  	partition P_20180121 values less than (0),
  	partition P_20190122 values less than (50000),
  	partition P_20200123 values less than (100000),
  	partition P_max values less than (maxvalue)
  );
  select * from Explain_test;
  drop table Explain_test;
  
  --openGauss关键字max(非保留),作为列名不带双引号，max大小匹配，建表成功
  drop table if exists Collation_Catalog_test;
  create table Collation_Catalog_test(
  	c_id int, c_int int, c_integer integer, c_bool int, c_boolean int, c_bigint integer,
  	c_real real, c_double real,
  	c_decimal decimal(38), c_number number(38), c_numeric numeric(38),
  	c_char char(50) default null, c_varchar varchar(20), c_varchar2 varchar2(4000),
  	c_date date, c_datetime date, c_timestamp timestamp,
  	Max text
  )
  PARTITION BY RANGE (c_integer)
  (
  	partition P_20180121 values less than (0),
  	partition P_20190122 values less than (50000),
  	partition P_20200123 values less than (100000),
  	partition P_max values less than (maxvalue)
  );
  select * from Collation_Catalog_test;
  drop table Collation_Catalog_test;