SQL> INSERT INTO project(pro_id, pro_name, budget)VALUES (1004, 'CRM',294000); 1 row created. SQL> INSERT INTO project(pro_id, pro_name, budget)VALUES (1005, 'VPN',415000); 1 row created. SQL> SQL> SQL> SET ECHO ON SQL> DELETE 2 FROM project 3 WHERE pro_id = 1006
The DELETE statement in SQL can delete multiple rows by specifying a condition that matches more than one row. Example: CREATE TABLE orders (order_id INT PRIMARY KEY,customer_id INT,status VARCHAR(50));INSERT INTO orders (order_id, customer_id, status) VALUES(101, 1, 'Pending'),(102, ...
用Delete替换Select语句将删除表的所有重复项。 与CTEAS(选择 *,ROW_NUMBER()OVER(PARTITION BY database_name,database_size,[未分配的空间],保留,数据,index_size,没用过ORDER BY database_name)AS Row_NumFROM tb_spaceused)- 选择 *--FROM CTE--WHERE Row_Num <> 1;从 CTE中删除WHERE ROW_NUM <> ...
ON DELETE SET NULL 和 ON DELETE CASCADE对外键约束的影响 ON DELETE SET NULL 子句的作用是,当主表中的一行数据被删除时,ORACLE自动将从表中依赖于 它的记录外键值改为空。 --为从表删除约束后新增带on delete set null的外键约束 SQL> ALTER TABLE tb_constraint_2 2 DROP CONSTRAINT FK_TB_CONS2_DEPT...
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...
SCOTT@PROD>deletefrom test;SCOTT@PROD>commit; 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SCOTT@PROD>analyze table test compute statistics;SCOTT@PROD>selecttable_name,blocks,empty_blocks from user_tables where table_name='TEST'; 普通insert ...
command = new SqlCommand( "DELETE FROM Customers WHERE CustomerID = @CustomerID", connection); // Add the parameters for the DeleteCommand. parameter = command.Parameters.Add( "@CustomerID", SqlDbType.NChar, 5, "CustomerID"); parameter.SourceVersion = DataRowVersion.Original; adapter.DeleteComm...
GridViewCommandEventArgs GridViewCommandEventHandler GridViewDeletedEventArgs GridViewDeletedEventHandler GridViewDeleteEventArgs GridViewDeleteEventHandler GridViewEditEventArgs GridViewEditEventHandler GridViewPageEventArgs GridViewPageEventHandler GridViewRow GridViewRowCollection GridViewRowEventArgs GridViewRowEventHandler Grid...
BeginExecuteNonQuery 起始這個 所 SqlCommand 描述之 Transact-SQL 語句或預存程式的非同步執行,通常會執行 INSERT、DELETE、UPDATE 和 SET 語句等命令。 每個 呼叫 BeginExecuteNonQuery 都必須與完成作業的呼叫 EndExecuteNonQuery 配對,通常是在不同的執行緒上。 BeginExecuteReader 起始Transact-SQL 語句或預存...
この場合、<xsql:insert-request>、<xsql:update-request>または<xsql:delete-request>を使用して、ポストされたXMLのコンテンツをターゲット表で挿入、更新または削除できます。XSLT変換を使用してポストされたXML文書を変換する場合、ポストされた文書がこの変換のソース・ドキュメントです。