Find a database size limit from within the SQL Server Find a String inside nvarchar(max) Find all rows where the value in one column only occurs once Find All Special Characters in a SQL Server Find and insert
there is no benefit in compressing T. Even if SQL Server could compress 10 pages to 1 page, you hardly made a dent in the size of the database, but you did add some CPU overhead instead. In a real-life workload, the choices are not ...
使用SQL Server Management Studio 内置查询存储报表。 使用适用于 Azure SQL 数据库的 Azure 门户 Query Performance Insight。 使用你想要应用于查询的 sys.sp_query_store_set_hints 和查询提示字符串执行 query_id。 此字符串可包含一个或多个查询提示。 有关完整信息,请参阅 sys.sp_query_store_set_hints。
使用BULK INSERT 或 OPENROWSET(BULK...) 导入数据到 SQL Server BULK INSERT (Transact-SQL) 大容量复制工具 (bcp) bcp工具从命令提示符运行。 下面的示例将Data.csv逗号分隔文件中的数据加载到现有Data_bcp数据库表中。 如前面先决条件部分中所述,必须先将 Excel 数据导出为文本,然后才能使用bcp导入它。bcp工...
前端支持Rest和Hive Server2,对Java开发人员和SQL Boy们都很友好。 HS2Endpoint 有点区别: 优势 尤其是处理异构数据源: 优势很明显。做联邦查询的改动也只是需要+个Catalog。 Demo FFA2022的罗宇侠&方盛凯两位大佬带来个Demo,展示了Flink如何使用Hive和Flink的dialect分别按流式和批式跑任务。
注意:从SQL Server 2016 (13.x) 开始,此行为由 ALTER DATABASE 的 AUTOGROW_SINGLE_FILE 和 AUTOGROW_ALL_FILES 选项控制,跟踪标志 1117 不再有效。 有关详细信息,请参阅 ALTER DATABASE (Transact-SQL) 文件和文件组选项。范围:仅全局。 1118 强制在统一区而不是混合区分配页,以减少 SGAM 页的争用。 创...
This ensures the trace flag remains active after a server restart. For more information about startup options, see Database Engine Service startup options. At the query level, by using the QUERYTRACEON query hint. The QUERYTRACEON option is only supported for Query Optimizer trace flags ...
--15. Find Database size and Log file size WITH FS AS (SELECT DATABASE_ID, TYPE, SIZE * 8.0 / 1024 SIZE FROM SYS.MASTER_FILES) SELECT NAME, (SELECT SUM(SIZE) FROM FS WHERE TYPE = 0 AND FS.DATABASE_ID = DB.DATABASE_ID) DATAFILESIZEMB, (SELECT SUM(SIZE) FROM FS WHERE TYPE...
Microsoft removed this handy little procedure called sp_executeresultset from SQL Server in SQL Server 2005. It allows you to generate dynamic SQL code on the fly by using a SELECT query. Then, the resulting SQL commands will be executed against the database. It permits you to create a sin...
Machine Learning Services (in database) Replication, Change Tracking, Change Data Capture Startup, shutdown, restart issues (instance or database) SQL Server resource usage (CPU, Memory, Storage) and Configuration Slow query performance Security, Encryption, Auditing, Authorization D...