| @table_variable } [ <OUTPUT Clause> ] [ FROM table_source [ ,...n ] ] [ WHERE { <search_condition> | { [ CURRENT OF { { [ GLOBAL ] cursor_name } | cursor_variable_name } ] } } ] [ OPTION ( <Query Hint> [ ,...n ] ) ] [; ] <object> ::= { [ server_name....
syntaxsql -- Syntax for Parallel Data WarehouseDELETE[FROM[database_name. [ schema ] . | schema. ]table_name] [WHERE<search_condition>] [OPTION(<query_options>[ ,...n ] ) ] [; ] 引數 WITH <common_table_expression> 指定定義在 DELETE 陳述式範圍內的暫存具名結果集,也稱為一般資料表運...
T-SQL(Transact Structured Query Language)是标准的SQL的扩展,是程序和SQL Server沟通的主要语言。 T-SQL语言主要由以下几部分组成: 数据定义语言(DDL):用来建立数据库、数据库对象等,如CREATE TABLE、DROP TABLE等。 数据控制语言(DCL):控制数据库的存取许可、权限等,如GRANT等。 数据操纵语言(DML):用于插入、修...
FIX: Assertion occurs when a parallel query deletes from a Filestream table in SQL Server 2014, 2016 and 2017
DROP TABLE的功能是用来删除已存在的Table。 2、语法 DROP TABLE [IF EXISTS] [db_name.]table_name; 说明:SQL中加[IF EXISTS] ,可以防止因表不存在而导致执行报错。 参数:db_name:Database名称。如果未指定,将选择当前database。table_name:需要删除的Table名称。
Using Transact-SQL To delete a table in Query Editor InObject Explorer, connect to an instance of Database Engine. On the Standard bar, clickNew Query. Copy and paste the following example into the query window and clickExecute. DROP TABLE dbo.PurchaseOrderDetail; ...
Delete columns using SQL Server Management Studio You can delete columns in SSMS using Object Explorer or Table Designer. Delete columns using Object Explorer The following steps explain how to delete columns with Object Explorer in SSMS: Connect to an instance of Database Engine. ...
SQL UPDATETABLE1setcol1 =3wherecol3 ='Dallas' 该UPDATE语句由 SQL Server 实现为一对INSERTDELETE/语句,因为要更新col1,该语句定义了唯一索引。 因此,日志读取器在分发数据库中放置一对DELETE/INSERT调用。 这可能会影响订阅服务器上触发器或自定义存储过程中存在的任何业务逻辑。 应将其他业务逻辑合并到DELETE...
| schema. ] table_name ] [ WHERE <search_condition> ] [ OPTION ( <query_options> [ ,...n ] ) ] [; ] 备注 若要查看 SQL Server 2014 (12.x) 及更早版本的 Transact-SQL 语法,请参阅早期版本文档。参数WITH common_table_expression<> 指定在 DELETE 语句作用域内定义的临时命名结果集...
DataTable dt = new DataTable(); using (SqlCommand cmd = new SqlCommand(insertQuery, conn)) using (var insertedOutput = cmd.ExecuteReader()) { dt.Load(insertedOutput); } Console.WriteLine(dt.Rows.Count); // 4 // 通过手工读取 var list = new List<int>(); using (SqlCommand cmd = new...