在t-SQL(Transact-SQL)中,SYS_CONNECT_BY_PATH函数用于在层次查询中构建祖先到当前节点的路径。这个函数在Oracle数据库中很常见,但在SQL Server中并没有直接的等效项。不过,可以通过递归的公用表表达式(CTE)来实现类似的功能。 基础概念 SYS_CONNECT_BY_PATH函数在Oracle中用于构建一个字符串,表示从根节点到当前节...
SELECT @Str = isnull(@Str + ',','') + B FROM #;SELECT @Str;
group by table1.id,table1.name 方法二、使用sys_connect_by_path select id, name, ltrim(max(sys_connect_by_path(role, ',')), ',') from (select row_number() over(partition by table1.id order by name) rn,table1.*, role from table1, table2 where table1.id = table2.id) ...
select table1.*,wmsys.wm_concat(role) from table1,table2 where table1.id=table2.id group by table1.id,table1.name 方法二、使用sys_connect_by_path select id, name, ltrim(max(sys_connect_by_path(role, ',')), ',') from (select row_number() over(partition by table1.id order by...
[DEBUG] connectingto:"user=esrep connect_timeout=10 dbname=esrep host=192.168.1.202 port=54321 keepalives=1 keepalives_idle=10 keepalives_interval=1 keepalives_count=3 fallback_application_name=internal_rwcmgr options=-csearch_path="[DEBUG] local tli:17; local_xlogpos:0/EE000028; follow...
Azure SQL 資料庫 Azure SQL 受控執行個體 Azure Synapse Analytics Analytics Platform System (PDW) Microsoft Fabric 的 SQL 端點分析 Microsoft Fabric 的倉儲 針對SQL Server 上每個已驗證的工作階段傳回一個資料列。sys.dm_exec_sessions是伺服器範圍檢視,顯示所有作用中用戶連線和內部工作的相關信息。 此資訊包括...
Azure SQL 資料庫 Azure SQL 受控執行個體 Azure Synapse Analytics Analytics Platform System (PDW) Microsoft Fabric 的 SQL 端點分析 Microsoft Fabric 的倉儲 針對SQL Server 上每個已驗證的工作階段傳回一個資料列。sys.dm_exec_sessions是伺服器範圍檢視,顯示所有作用中用戶連線和內部工作...
SQL 複製 SELECT st.text AS [SQL Text], c.connection_id, w.session_id, w.wait_duration_ms, w.wait_type, w.resource_address, w.blocking_session_id, w.resource_description, c.client_net_address, c.connect_time FROM sys.dm_os_waiting_tasks AS w INNER JOIN sys.d...
NamePathTypeDescription Transaction Hash TransactionHash string The transaction hash Contract Address ContractAddress string The contract address (deployment transaction) Is Processed IsProcessed boolean Indicator of transaction receipt by the network Has Failed HasFailed boolean Indicator of transactio...
Applies to: SQL Server 2012 (11.x) and later versions. pdw_node_id int The identifier for the node that this distribution is on.Applies to: Azure Synapse Analytics, and Analytics Platform System (PDW). page_server_reads bigint Number of page server reads performed, by requests in this ...