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我寫了一個查詢，它提取SQL AlwaysON健康信息。剩下的唯一事情就是在最後添加一個where子句以過濾AvailabilityGroupName和DatabaseName。當我在查詢中輸入時：'select * from results where AvailabilityGroupName ='LAB-VIP-USADB'和DatabaseName ='CPS''。但是，當我將查詢存儲在變量nvarchar變量@sql中，然後執行存儲在變量中的查詢時，我收到錯誤消息「關鍵字'EXEC'附近的語法錯誤」。我想參數化查詢的原因是一個可用性組可能包含多個數據庫。參數化輸入將來自PRTG，以便它查詢該特定數據庫的可用性組。動態SQL，參數化查詢
DECLARE @sql NVARCHAR(MAX)
SET @sql='SELECT * FROM Results WHERE AvailabilityGroupName = ''LAB-VIP-USADB'' AND DatabaseName = ''CPS'''
--select @sql
;
WITH basicaginfo AS(
SELECT
ag.name AS AvailabilityGroupName,
cs.replica_server_name AS NodeName,
rs.role_desc,
rs.synchronization_health_desc,
DB_NAME(drs.database_id) AS DatabaseName
FROM
sys.availability_groups ag
JOIN
sys.dm_hadr_availability_replica_cluster_states cs on ag.group_id = cs.group_id
JOIN
sys.dm_hadr_availability_replica_states rs ON (ag.group_id=rs.group_id AND cs.replica_id = rs.replica_id)
JOIN
sys.dm_hadr_database_replica_states drs ON (ag.group_id=drs.group_id AND cs.replica_id = drs.replica_id)
\t \t \t \t \t),
AG_Stats AS
(
SELECT AR.replica_server_name,
HARS.role_desc,
Db_name(DRS.database_id) [DBName],
DRS.last_commit_time
FROM sys.dm_hadr_database_replica_states DRS
INNER JOIN sys.availability_replicas AR ON DRS.replica_id = AR.replica_id
INNER JOIN sys.dm_hadr_availability_replica_states HARS ON AR.group_id = HARS.group_id
AND AR.replica_id = HARS.replica_id
),
Pri_CommitTime AS
(
SELECT replica_server_name
, DBName
, last_commit_time
FROM AG_Stats
WHERE role_desc = 'PRIMARY'
),
Sec_CommitTime AS
(
SELECT replica_server_name
, DBName
, last_commit_time
FROM AG_Stats
WHERE role_desc = 'SECONDARY'
),
\t \t Results AS
\t \t \t \t \t (
\t \t \t \t \t SELECT
\t \t \t \t \t \t AvailabilityGroupName,
\t \t \t \t \t \t DatabaseName,
\t \t \t \t \t \t [LAB-SCB-SQL01],
\t \t \t \t \t \t [LAB-SCB-SQL02],
\t \t \t \t \t \t [LAB-LAS-SQL01],
\t \t \t \t \t \t [LAB-LAS-SQL02],
\t \t \t \t \t \t [Max_Sync_Lag_Secs]
\t \t \t \t \t FROM(
\t \t \t \t \t \t \t SELECT
\t \t \t \t \t \t \t \t bb.AvailabilityGroupName,
\t \t \t \t \t \t \t \t bb.DatabaseName,
\t \t \t \t \t \t \t \t bb.NodeName,
\t \t \t \t \t \t \t \t bb.synchronization_health_desc,
\t \t \t \t \t \t \t \t MAX(DATEDIFF(ss,s.last_commit_time,p.last_commit_time)) OVER (PARTITION BY NULL) AS [Max_Sync_Lag_Secs]
\t \t \t \t \t \t \t FROM
\t \t \t \t \t \t \t \t basicaginfo bb
\t \t \t \t \t \t \t \t \t LEFT JOIN
\t \t \t \t \t \t \t \t Pri_CommitTime p ON p.DBName=bb.DatabaseName
\t \t \t \t \t \t \t \t \t LEFT JOIN
\t \t \t \t \t \t \t \t Sec_CommitTime s ON bb.NodeName = s.replica_server_name
\t \t \t \t \t \t) AS Data
\t \t \t \t \t PIVOT(
\t \t \t \t \t \t \t MAX(synchronization_health_desc) FOR [NodeName] IN([LAB-SCB-SQL01], [LAB-SCB-SQL02], [LAB-LAS-SQL01], [LAB-LAS-SQL02])
\t \t \t \t \t \t ) AS PivotedData
\t \t \t \t \t)
EXEC(@sql)