SQL Server Azure SQL 数据库 Azure SQL 托管实例 本文介绍如何使用 SQL Server Management Studio 或 Transact-SQL 查看 SQL Server 实例上的数据库列表。 权限 如果sys.databases的调用方不是数据库的所有者,并且数据库不是master或tempdb,则查看对应行所需的最低权限为 ALTER ANY DATABASE 或 ...
list_dataBases.Clear();using(SqlConnection conn =newSqlConnection(connStr)) {try{ conn.Open(); SqlCommand cmd=newSqlCommand(); cmd.Connection=conn; cmd.CommandText="select name from sysdatabases";//查询所有的数据库名称SqlDataReader dataReader =cmd.ExecuteReader();while(dataReader.Read()) { l...
In other words: Yes, you can use sysdatabases, but you might need to rewrite everything once a SQL Server version is released which does not support sysdatabases any more. The compatibility views (such as sysdatabases) are kept "as they were" in SQL Server 2000 and don't get new featu...
Basic Information about DatabasesA computer can have one or more than one instance of SQL Server installed. Each instance of SQL Server can contain one or many databases. Within a database, there are one or many object ownership groups called schemas. Within each schema there are database ...
Private Sub FillEmptyDatabaseList(bFill As Boolean) ’获得SQL Server服务器上的所有数据库名称 If bFill = True Then Dim oDB As SQLDMO.Database Set oDB = New SQLDMO.Database For Each oDB In oSQLServer.Databases If oDB.SystemObject = False Then ...
Ifsysadminis checked in theServer Roleslist, this Windows account has access to all databases. Ifsysadminis not checked, clickUser Mappingto see if this Windows account is mapped to the appropriate database asdb_owner. If an appropriate Login does not exist, and/or the Login does not have ...
https://docs.microsoft.com/zh-cn/sql/relational-databases/performance/display-an-actual-execution-plan?view=sql-server-2017 2.3 为什么要读懂执行计划 首先执行计划让你知道你复杂的sql到底是怎么执行的,有没有按照你想的方案执行,有没有按照最高效的方式执行,使用啦众多索引的哪一个,怎么排序,怎么合并数据的...
9 string sql = "select [name] from master.dbo.sysdatabases where DBId>6 Order By [Name] "; 10 try 11 { 12 using (SqlConnection connection = new SqlConnection(conStr)) 13 { 14 var list = connection.Query<string>(sql).ToList(); ...
对SQL Server来说,最重要的资源是内存、Disk和CPU,其中内存又是重中之重,因为SQL Server为了性能要求,会将它所要访问的数据全部(只要内存足够)放到缓存中。这篇就来介绍SQL Server的内存管理体系。 SQL Server作为Windows上运行的应用程序,必须接受Windows的资源管理,利用Windows的API来申请和调度各类资源。但是,由于...
SQL Server Resource Provider Database Interfaces Create a SQL Server Database List the SQL Server Databases Get a SQL Server Database Delete a Database Update a SQL Server Database SqlDatabase (Object) Windows Azure Pack MySQL Resource Provider REST API Reference ...