1.SELECT 语句 2.SELECT DISTINCT 语句 3.WHERE 子句 4.AND 和 OR 运算符 5.ORDER BY 语句 6.INSERT INTO 语句 7.Update 语句 8.DELETE 语句 二、高级 1.TOP 子句 2.LIKE 操作符 3.SQL 通配符 4.IN 操作符 5.BETWEEN 操作符 6.AS 7.join 8.SQL UNION 操作符 9.SELECT INTO 语句 10.CREATE DA...
SELECTt1.*FROMdevice_recordt1INNERJOIN(SELECTdevice_id,app_version,MAX(create_time)ASmax_dateFROM...
Delete top n rows using join delete with except Deleted Microsoft SQL Server folder from C: Drive ... Deleting a database in RESTRICTED MODE Deleting all tables in a schema Deleting all tables in database older than 14 days Deleting duplicate records in a VERY LARGE table Deleting records fr...
PWAIT_HADR_JOIN 仅供内部使用。适用于:SQL Server 2014 (12.x) 及更高版本。 PWAIT_HADR_OFFLINE_COMPLETED 删除可用性组操作正在等待目标可用性组在销毁 Windows Server 故障转移群集对象之前脱机。适用于:SQL Server 2012 (11.x) 及更高版本。 PWAIT_HADR_ONLINE_COMPLETED 创建或故障转移可用性组操作正在等...
Is Cross join possible in SSIS Is is possible to use an ODBC connection in an SSIS Lookup Transformation? Is it possible to run multiple Data Flow tasks simultaneously? Is it possible to test the SSISDB encryption password? Is it possible to use a Like operator in conditional split Is there...
select tab1.col1, tab2.col2,tab3.col3 (columns to display) from table1 Join ///Any type of join table2 on tab1.col1=tab2.col1 //any matching columns Join ///Any type of join table3 on tab 2.col1=tab 3.col1 //any matching columns Advanced SQL JOINS Interview Questions for...
(selectu_ser.*, crd.amount gmvfromu_serleftjoinu_ser_order crdoncrd.u_serid=u_ser.idwhereu_ser.tenantId=123456789orderbyiddescOFFSET@rowROWSFETCHNEXT@sizeROWSONLY) TTT outerapply(selecttop1clog.created,clog.remarkfromu_ser_flow_loc clogwhereclog.recordType=1andclog.u_serId=TTT.idorderby...
ips.avg_page_space_used_in_percent, ips.avg_fragmentation_in_percent, ips.page_count, ips.alloc_unit_type_desc, ips.ghost_record_countFROMsys.dm_db_index_physical_stats(DB_ID(),default,default,default,'SAMPLED')ASipsINNERJOINsys.indexesASiONips.object_id = i.object_idANDips.index_id =...
Figure 1 查找服务器进程 ID SELECT DB_NAME(resource_database_id) as DBName, OBJECT_NAME(resource_associated_entity_id, resource_database_id) AS ObjectName, request_mode, request_type, request_session_id, es.host_name, es.login_name, es.login_time FROM sys.dm_tran_locks tl INNER JOIN sy...
(database_id) dbname, database_transaction_begin_time, database_transaction_state, database_transaction_log_record_count, database_transaction_log_bytes_used, database_transaction_begin_lsn, stran.session_idfromsys.dm_tran_database_transactions dbtranleftouterjoinsys.dm_tran_sessi...