text: --  @testpoint:openGauss保留关键字notnull同时作为表名和列名带引号，建表成功
  drop table if exists "notnull";
  create table "notnull"(
  	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,
  	"notnull" varchar(100) default 'notnull'
  )
  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)
  );
  
  --查看表数据
  select "notnull" from "notnull";
  
  --清理环境
  drop table "notnull";