云数据库 GAUSSDB-EXECUTE DIRECT:示例

时间：2024-04-26 16:16:00

云数据库 GAUSSDB

示例

  
   
     
     
       --查询当前集群的节点分布状态。
gaussdb=# SELECT * FROM pgxc_node;
 node_name   | node_type | node_port |   node_host    | node_port1 |   node_host1   | hostis_primary | nodeis_primary | nodeis_preferred |   node_id   | sctp_port | control_port | sctp_port1 | control_port1 
--------------+-----------+-----------+----------------+------------+----------------+----------------+----------------+------------------+-------------+-----------+--------------+------------+---------------
 cn_5001      | C         |      8050 | 10.180.155.74  |       8050 | 10.180.155.74  | t              | f              | f                |  1120683504 |         0 |            0 |          0 |             0
 cn_5003      | C         |      8050 | 10.180.157.130 |       8050 | 10.180.157.130 | t              | f              | f                |  -125853378 |         0 |            0 |          0 |             0
 dn_6001_6002 | D         |     40050 | 10.180.155.74  |      45050 | 10.146.187.231 | t              | f              | f                |  1644780306 |     40052 |        40052 |      45052 |         45052
 dn_6003_6004 | D         |     40050 | 10.146.187.231 |      45050 | 10.180.157.130 | t              | f              | f                |  -966646068 |     40052 |        40052 |      45052 |         45052
 dn_6005_6006 | D         |     40050 | 10.180.157.130 |      45050 | 10.180.155.74  | t              | f              | f                |   868850011 |     40052 |        40052 |      45052 |         45052
 cn_5002      | C         |      8050 | localhost      |       8050 | localhost      | t              | f              | f                | -1736975100 |         0 |            0 |          0 |             0
(6 rows)

--查询dn_6001_6002上tpcds.customer_address记录。
gaussdb=# EXECUTE DIRECT ON(dn_6001_6002) 'select count(*) from tpcds.customer_address';
 count 
-------
 16922
(1 row)

--查询tpcds.customer_address所有记录。
gaussdb=# SELECT count(*) FROM tpcds.customer_address;
 count 
-------
 50000
(1 row)

      

    

  
 