如果執行 ALTER TABLESPACE 陳述式,請在重新提交陳述式之前,增加表格空間的 MAXSIZE,以便它大於或等於表格空間的現行大小加上正要新增之空間數量的總和。另外,將表格空間的 AUTORESIZE 設為 NO。請注意,停用自動調整大小將導致 MAXSIZE 和 INCREASESIZE 的現行值遺漏。 如果執行 SET TABLESPACE CONTAINERS 指令,請...
Usage: sqlcmd [flags] sqlcmd [command] Examples: # Install/Create, Query, Uninstall SQL Server sqlcmd create mssql --accept-eula --using https://aka.ms/AdventureWorksLT.bak sqlcmd open ads sqlcmd query "SELECT @@version" sqlcmd delete # View configuration information and connection strings...
SELECT name, TYPE_NAME(system_type_id), max_length, precision, scale FROM sys.columns WHERE object_id = OBJECT_ID(N'dbo.doc_exy') ; GO -- Increase the size of the varchar column. ALTER TABLE dbo.doc_exy ALTER COLUMN col_a varchar(25) ; GO -- Increase the scale and precision of...
Run this query to get all the user created statistics and statistics columns for a table. SQL Copy SELECT s.name AS statistics_name ,c.name AS column_name ,sc.stats_column_id FROM sys.stats AS s INNER JOIN sys.stats_columns AS sc ON s.object_id = sc.object_id AND s.stats_id ...
The expression doesn't have to be evaluated repeatedly at run time. The value of the expression after it is evaluated is used by the Query Optimizer to estimate the size of the result set of the portion of the query TotalDue > 117.00 + 1000.00....
To avoid this, use the SERIALIZABLE or HOLDLOCK hint, or row versioning. For more information, see Table Hints (Transact-SQL). Missing one or more rows that were not the target of update When you are using READ UNCOMMITTED, if your query reads rows using an allocation order scan (using ...
To query the server for all available collations, use the following fn_helpcollations() built-in function:SQL Copy SELECT * FROM sys.fn_helpcollations(); Collations in Azure SQL DatabaseYou can't change or set the logical server collation on Azure SQL Database, but can configure each ...
Adding varchar(8) in time format that totals more than 24 hrs in SQL Additional Column With BULK INSERT Adventureworks query about sales AFTER INSERT and AFTER UPDATE triggers on same table After INSERT Trigger question - how to use value from last added record Age Bucket in sql Age calculati...
ON forces all rowgroups into the columnstore, regardless of size and state (CLOSED or OPEN). OFF forces all CLOSED rowgroups into the columnstore.For more information, see Optimize index maintenance to improve query performance and reduce resource consumption....
可以通过使用DMV dm_exec_query_stats可以获取更多的信息。当查询优化器为查询创建执行计划时,它会缓存计划进行重用。每次使用查询计划执行查询时,性能统计会被保留。可以使用dm_exec_query_stats查看这些统计。 SELECT est.text AS batchtext, SUBSTRING(est.text, (eqs.statement_start_offset/2)+1, ...