我在SQL表中有一个SNMP消息列(格式化为VARCHAR(MAX)),如下所示。有没有办法将每个消息OID转换为列/值格式?
消息列内容示例:
community=PUBLIC, enterprise=1.1.1.1.1.1.1.1.1.1.1, uptime=42170345, agent_ip=1.1.1.1, version=Ver2, ...
期望的结果:
community enterprise uptime agent_ip
--------- ---------- ------ --------
PUBLIC 1.1.1.1.1.1.1.1.1.1.1 42170345 1.1.1.1 ...
所以基本上需要将字符串拆分为","然后将INI值作为列返回。请注意,这是在一行(不创建或拆分为多行,只是多列)
这是SQL Server 2008 R2。
谢谢。
答案 0 :(得分:0)
您可以在很多地方找到网络上的splitstring
功能。以下是如何在查询中使用它来执行您想要的操作:
select t.*, cols.*
from table t cross apply
(select max(case when token like 'community=%' then substring(token, 11, len(token))
end) as community,
max(case when token like 'enterprise=%' then substring(token, 12, len(token))
end) as enterprise,
max(case when token like 'uptime=%' then substring(token, 8, len(token))
end) as uptime,
max(case when token like 'agent_ip=%' then substring(token, 10, len(token))
end) as agent_ip
from dbo.SplitString(t.snmp, ',')(idx, token)
) cols;
答案 1 :(得分:0)
可能不是最有效的方法,但这有效:
SELECT
REPLACE((SUBSTRING(MsgText,CHARINDEX('community=',MsgText),CHARINDEX(', enterprise=',MsgText) - CHARINDEX('community=',MsgText))),'community=','') AS community
,REPLACE((SUBSTRING(MsgText,CHARINDEX('enterprise=',MsgText),CHARINDEX(', uptime=',MsgText) - CHARINDEX('enterprise=',MsgText))),'enterprise=','') AS enterprise
,REPLACE((SUBSTRING(MsgText,CHARINDEX('uptime=',MsgText),CHARINDEX(', agent_ip=',MsgText) - CHARINDEX('uptime=',MsgText))),'uptime=','') AS uptime
,REPLACE((SUBSTRING(MsgText,CHARINDEX('agent_ip=',MsgText),CHARINDEX(', version=',MsgText) - CHARINDEX('agent_ip=',MsgText))),'agent_ip=','') AS agent_ip
,MsgText
FROM Database.dbo.Table
如果有人需要一种解析SNMP消息的方法
答案 2 :(得分:0)
以下是使用将字符串转换为XML的解决方案,它为结果处理带来了更多自由:
-- Prepare data for solution testing
DECLARE @srctable TABLE (
Id INT,
SnmpMessage VARCHAR(MAX),
SnmpMessageXml XML
)
INSERT INTO @srctable
SELECT Id, SnmpMessage, SnmpMessageXml FROM ( VALUES
(1, 'community=PUBLIC, enterprise=1.1.1.1.1.1.1.1.1.1.1, uptime=42170345, agent_ip=1.1.1.1, version=Ver2', null)
) v (Id, SnmpMessage, SnmpMessageXml)
-- Transform source formatted string to XML string
UPDATE @srctable
SET SnmpMessageXml = CAST('<row><data ' + REPLACE(REPLACE(SnmpMessage, ',', '"/><data '), '=', '="') + '"/></row>' AS XML)
-- Final select from XML data
SELECT SnmpMessageXml.value('(/row/data/@community)[1]', 'VARCHAR(999)') AS community,
SnmpMessageXml.value('(/row/data/@enterprise)[1]', 'VARCHAR(999)') AS enterprise,
SnmpMessageXml.value('(/row/data/@uptime)[1]', 'VARCHAR(999)') AS uptime,
SnmpMessageXml.value('(/row/data/@agent_ip)[1]', 'VARCHAR(999)') AS agent_ip,
SnmpMessageXml.value('(/row/data/@version)[1]', 'VARCHAR(999)') AS version
FROM @srctable AS t