云数据库 GAUSSDB-PURGE:示例

时间：2024-11-02 18:49:41

云数据库 GAUSSDB P

示例

--创建表reason_t1。
gaussdb=# CREATE TABLE reason_t1(
    r_reason_sk    integer,
    r_reason_id    character(16),
    r_reason_desc  character(100)
) WITH(STORAGE_TYPE = ustore);

--创建表reason_t2。
gaussdb=# CREATE TABLE reason_t2(
    r_reason_sk    integer,
    r_reason_id    character(16),
    r_reason_desc  character(100)
) WITH(STORAGE_TYPE = ustore);

-- 对表reason_t1和reason_t2添加索引。
gaussdb=#  CREATE INDEX idx_t1 on reason_t1(r_reason_id); 
gaussdb=#  CREATE INDEX idx_t2 on reason_t2(r_reason_id); 
gaussdb=#  DROP TABLE reason_t1;
gaussdb=#  DROP TABLE reason_t2;

--查看回收站。
gaussdb=#  SELECT rcyname,rcyoriginname,rcytablespace FROM GS_RECYCLEBIN;
          rcyname           | rcyoriginname | rcytablespace 
----------------------------+---------------+---------------
 BIN$31C94EB4207$8001$0==$0 | reason_t1     |             0
 BIN$31C94EB420D$8001$0==$0 | idx_t1        |             0
 BIN$31C94EB420A$8004$0==$0 | reason_t2     |             0
 BIN$31C94EB420E$8004$0==$0 | idx_t2        |             0
(4 rows)

--PURGE清除表。
gaussdb=#  PURGE TABLE reason_t1;
gaussdb=#  SELECT rcyname,rcyoriginname,rcytablespace FROM GS_RECYCLEBIN;
          rcyname           | rcyoriginname | rcytablespace 
----------------------------+---------------+---------------
 BIN$31C94EB420A$8004$0==$0 | reason_t2     |             0
 BIN$31C94EB420E$8004$0==$0 | idx_t2        |             0
(2 rows)

--PURG清除索引。
gaussdb=# PURGE INDEX idx_t2;
gaussdb=# SELECT rcyname,rcyoriginname,rcytablespace FROM GS_RECYCLEBIN;
          rcyname           | rcyoriginname | rcytablespace 
----------------------------+---------------+---------------
 BIN$31C94EB420A$8004$0==$0 | reason_t2     |             0
(1 row)

--PURGE清除回收站所有对象。
gaussdb=#  PURGE recyclebin;
gaussdb=#  SELECT rcyname,rcyoriginname,rcytablespace FROM GS_RECYCLEBIN;
        rcyname        | rcyoriginname | rcytablespace 
-----------------------+---------------+---------------
(0 rows)