What is SQL Server? Connect to the Database Engine What's new? Editions and features Release notes Business continuity Database design Hierarchical Data Collation Databases Event notification FILESTREAM, FileTa
SELECT Sname,Sno FROM Student WHERE Sname LIKE '__阳%';【1】查询所有不姓刘的学生姓名、学号和性别。 SELECT Sname, Sno, Ssex FROM Student WHERE Sname NOT LIKE '刘%';使用换码字符将通配符转义为普通字符ESCAPE '\' 表示“ \” 为换码字符【1】查询DB_Design课程的课程号和学分。 SELECT Cno,Ccr...
Nonclustered index design guidelinesA disk-based rowstore nonclustered index contains the index key values and row locators that point to the storage location of the table data. You can create multiple nonclustered indexes on a table or indexed view. Generally, nonclustered indexes should be...
Database design Development Internals & architecture Installation Migrate & load data Manage, monitor, & tune Query data Reporting & Analytics Security Tools Tutorials SQL Server on Linux SQL on Azure Azure Arc Resources Reference Azure Data CLI azcli Database samples Errors & events Event classes ...
Temporal table usage scenarios 代价 1.会拉慢 update, delete 执行, 因为执行多了一个把资料 insert to history table 的动作. 2.会增加 disk space 3. 维护成本, 由于 history table 的 Design 和 temporal table 是一致的, 所以我们也要确保 history data 符合 table design, ...
Database design Development Internals & architecture Installation Migrate & load data Manage, monitor, & tune Query data Reporting & Analytics Security Tools Tutorials SQL Server on Linux SQL on Azure Azure Arc Resources Reference Azure Data CLI azcli Database samples Errors & events Event classes ...
1. How do you design a database? 2. What are three new options that you can configure for columns, rows, or pages within a table? Quick Check Answers 1. The ruling principle for designing a database is “Put things where they belong.” ...
The following table helps you identify the firewall ports required by SQL Server that will need to be allowed at a minimum in order for server roles in your Operations Manager management group to successfully communicate.ขยายตาราง ...
For more information, see the SQL Server and Azure SQL index architecture and design guide. SQL Copy CREATE TABLE DepartmentHistory ( DeptID INT NOT NULL, DeptName VARCHAR(50) NOT NULL, ManagerID INT NULL, ParentDeptID INT NULL, ValidFrom DATETIME2 NOT NULL, ValidTo DATETIME2 NOT NULL )...
Table 1. SQL Server High Availability Options Technology Always On Availability Groups Always On Failover Cluster Instances Database Mirroring[5] Log Shipping Granularity Storage Type RPO – Data Loss Database Non-shared None (with synchronous commit mode) Instance Shared None Database Database Non-...