MySQLの更新、挿入、重複

Question

私が更新（または以前の状態が存在しない場合は挿入）したいテーブルを持っているを避けるために参加

servers table    clusters table    datacenters table 

server_id | server_name  cluster_id | cluster_name datacenter_id | datacenter_name 
-----------------------  ------------------------- ------------------------------- 
1   server1   1   cluster1  1    datacentereast 
2   server7   3   Cluster22  5    datacenterwest 


server_status table 

status_id | status_server | status_cluster | status_datacenter 
--------------------------------------------------------------------- 

私は他のテーブルのIDを持つserver_statusを移入し、重複を避けたいと思います。

これまでのところ、私は持っている：実際のSQLコマンドのうち

_mysql_exceptions.OperationalError: (1054, "Unknown column 'status_datacenter' in 'where clause'") 

印刷：

sql_string = """ 
INSERT into server_status (status_datacenter,status_cluster, status_server) 
    SELECT 
     d.datacenter_id,c.cluster_id,s.server_id 
    FROM 
     datacenters as d, clusters as c, servers as s 
    WHERE 
     d.datacenter_name = \'%s\' 
     AND c.cluster_name = \'%s\' 
     AND s.server_name = \'%s\' 
     AND d.datacenter_id != status_datacenter 
     AND c.cluster_id != status_cluster 
     AND s.server_id != status_server; 
    """ % (datacenter,cluster,server) 

以上がで失敗

INSERT into server_status (status_datacenter,status_cluster, status_server) 
SELECT d.datacenter_id,c.cluster_id,s.server_id 
    FROM datacenters as d, clusters as c, servers as s 
    WHERE d.datacenter_name = 'SDDC' 
    AND c.cluster_name = 'qboc37' 
    AND s.server_name = 'ap30' 
    AND d.datacenter_id != status_datacenter 
    AND c.cluster_id != status_cluster 
    AND s.server_id != status_server; 

Answer 1

まずserver_status (status_datacenter,status_cluster, status_server)に一意のインデックスを作成します、

INSERT IGNORE into server_status (status_datacenter,status_cluster, status_server) 
SELECT d.datacenter_id,c.cluster_id,s.server_id 
    FROM datacenters as d, clusters as c, servers as s 
    WHERE d.datacenter_name = 'SDDC' 
    AND c.cluster_name = 'qboc37' 
    AND s.server_name = 'ap30'