text: -- @testpoint: lseg类型，使用[(x1,y1),(x2,y2)]方式插入0坐标值
  
  drop table if exists test_lseg03;
  create table test_lseg03 (name lseg);
  insert into test_lseg03 values (lseg '[(0,0),(0,0)]');
  select * from test_lseg03;
  drop table test_lseg03;