p.rows AS rowcounts, SUM(a.total_pages) * 8 AS totalspaceKB, SUM(a.used_pages) * 8 AS usedspaceKB, (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS unusedspaceKB, getdate() as captureddatetime FROM sys.tables t INNER JOIN sys.indexes i ON t.OBJECT_ID = i.object_id ...
SELECTt.nameAS表名,SUM(p.rows)AS记录数FROMsys.tablesAStINNERJOINsys.partitionsASpONt.object_id=p.object_idWHEREt.is_ms_shipped=0ANDp.index_idIN(0,1)GROUPBYt.name; 1. 2. 3. 4. 5. 在上面的代码中,我们使用了sys.tables和sys.partitions系统表来获取每个表的名称和行记录数。我们使用INNER J...
USE AdventureWorks2022; GO CREATE PROCEDURE MyProc2( @d datetime ) AS BEGIN DECLARE @d2 datetime SET @d2 = @d+1 SELECT COUNT(*) FROM Sales.SalesOrderHeader WHERE OrderDate > @d2 END; 在SQL Server 最佳化 MyProc2 中的SELECT 陳述式時,@d2 的值未知。 因此,查詢最佳化工具會針對 OrderDa...
SELECT PARTITION_NAME, HIGH_VALUE, HIGH_VALUE_LENGTH, TABLESPACE_NAME,PCT_FREE, PCT_USED, INI_TRANS, MAX_TRANS, INITIAL_EXTENT,NEXT_EXTENT, MIN_EXTENT, MAX_EXTENT, PCT_INCREASE, FREELISTS,FREELIST_GROUPS, LOGGING, BUFFER_POOL, NUM_ROWS, BLOCKS,EMPTY_BLOCKS, AVG_SPACE, CHAIN_CNT, AVG_ROW...
從TABLES 結構描述資料列集,SQL Server 會根據上述規則設定限制,以擷取 TABLE_CATALOG、TABLE_SCHEMA、TABLE_NAME、TABLE_TYPE、TABLE_GUID 資料行。 從COLUMNS 結構描述資料列集,SQL Server 會擷取 TABLE_CATALOG、TABLE_SCHEMA、TABLE_NAME、COLUMN_NAME、COLUMN_GUID、ORDINAL_POSITION、COLUMN_FLAGS、IS_NULLA...
Creates an index in which the sort order specified for the index key columns determines the page order in the index structure on disk. Rows on the pages in the bottom, or leaf, level of the clustered index always contain all columns of the table. Rows on the pages in the upper levels ...
在SQL Server、Azure SQL 数据库和 Analytics Platform System (PDW) 中创建 Transact-SQL 或公共语言运行时 (CLR) 存储过程。 存储过程与其他编程语言中的过程类似,这是因为存储过程可以:接受输入参数并以输出参数的格式向调用过程或批处理返回多个值。 包含用于在数据库中执行操作(包括调用其他过程)的编程语句。
FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE IN ('BASE TABLE', 'VIEW'); 查询表结构信息 1 sp_help 'test'; 二、运维小技巧 一次性清除数据库所有表的数据(高危操作,谨慎) CREATE PROCEDURE sp_DeleteAllData AS EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL' EXEC sp_MSForEac...
If type_schema_name isn't specified, the SQL Server Database Engine references type_name in the following order: The SQL Server system data type. The default schema of the current user in the current database. The dbo schema in the current database. For memory-optimized tables, see Support...
Azure SQL Managed Instance supports temporary objects in the same way as SQL Server, where all global temporary tables and global temporary stored procedures are accessible by all user sessions within the same SQL managed instance. To learn more abouttempdbsizes in Azure SQL Managed Instance, review...