--创建表
gaussdb=# CREATE TABLE sections_t1
(
   section       NUMBER(4) ,
   section_name  VARCHAR2(30),
   manager_id    NUMBER(6),
   place_id      NUMBER(4) 
)
DISTRIBUTE BY hash(manager_id);

--声明变量
gaussdb=# DECLARE 
   section       NUMBER(4) := 280; 
   section_name  VARCHAR2(30) := 'Info support'; 
   manager_id    NUMBER(6) := 103;
   place_id      NUMBER(4) := 1400;
   new_colname   VARCHAR2(10) := 'sec_name';
BEGIN 
--执行查询
    EXECUTE IMMEDIATE 'insert into sections_t1 values(:1, :2, :3, :4)' 
       USING section, section_name, manager_id,place_id; 
--执行查询（重复占位符）
    EXECUTE IMMEDIATE 'insert into sections_t1 values(:1, :2, :3, :1)' 
       USING section, section_name, manager_id; 
--执行ALTER语句（建议采用“||”拼接数据库对象构造DDL语句）
    EXECUTE IMMEDIATE 'alter table sections_t1 rename section_name to ' || new_colname;
END; 
/
ANONYMOUS BLOCK EXECUTE
--查询数据
gaussdb=# SELECT * FROM sections_t1;
 section |   sec_name   | manager_id | place_id 
---------+--------------+------------+----------
     280 | Info support |        103 |     1400
     280 | Info support |        103 |      280
(2 rows)

--删除表
gaussdb=# DROP TABLE sections_t1;