use rc GO )DECLARE cur1 cursor for select [name] from sys.tables where name LIKE 'index_%' drop table #Tmp --删除临时表#Tmp create table #Tmp --创建临时表#Tmp ( kkk uniqueidentifier ); INSERT #Tmp VALUES('595C4D7D-B9E9-4E29-85F5-05C414CA961E') INSERT #Tmp VALU

  阅读导航 1 Cursor Step 1.1 Create cursor 1.2 Parse statement 1.3 descript and define 1.4 Bind variables and Parallelize 1.5 define column 1.6 Execute and Fetch 1.7 Fetch rows of a query 1.8 Cursor value 1.9 Close the cursor Oracle数据库将每一个执行SQL从开始解析到执行,再

USE [EUC]GO/****** Object:  StoredProcedure [dbo].[SP_SME_QueryAuditLog]    Script Date: 02/05/2015 15:54:16 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGO ALTER PROCEDURE [dbo].[SP_SME_QueryAuditLog](    @ReferenceTable VARCHAR(50),    @Refere

 1 table1结构如下  2 id    int  3 name  varchar(50)  4   5 declare @id int  6 declare @name varchar(50)  7 declare cursor1 cursor for         --定义游标cursor1  8 select * from table1               --使用游标的对象(跟据需要填入select文)  9 open cursor1                    

table1结构如下 id int name ) declare @id int ) declare cursor1 cursor for --定义游标cursor1 select * from table1 --使用游标的对象(跟据需要填入select文) open cursor1 --打开游标 fetch next from cursor1 into @id,@name --将游标向下移1行,获取的数据放入之前定义的变量@id,@name中 --判断是否成功获取数据 begin ' wher

http://www.cnblogs.com/Gavinzhao/archive/2010/07/14/1777644.html 1 table1结构如下 2 id    int 3 name  varchar(50) 4  5 declare @id int 6 declare @name varchar(50) 7 declare cursor1 cursor for         --定义游标cursor1 8 select * from table1               --使

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 table1结构如下 id int name ) declare @id int ) declare cursor1 cursor for --定义游标cursor1 select * from table1 --使用游标的对象(跟据需要填入select文) open cursor1 --打开游标

SET NOCOUNT ON; DECLARE @vendor_id int, @vendor_name nvarchar(50),     @message varchar(80), @product nvarchar(50); PRINT '-------- Vendor Products Report --------'; DECLARE vendor_cursor CURSOR FOR SELECT VendorID, Name FROM Purchasing.Vendor WHERE

DECLARE @name VARCHAR(50)  --声明游标 DECLARE cursor_VAA1 CURSOR FOR SELECT VAA05 FROM VAA1 --打开游标 OPEN cursor_VAA1 --取第一条 FETCH NEXT FROM cursor_VAA1 INTO @name --循环取所有行 WHILE(@@fetch_status=0) BEGIN PRINT @name --取下一条 FETCH NEXT FROM cursor_VAA1 INTO @

1.游标在数据表没有id(identity(1,1))时好用,但是游标会吃更多的内存,减少可用的并发,占用宽带,锁定资源,当然还有更多的代码量 2.如果能不用游标,尽量不要使用游标,用完用完之后一定要关闭和释放, 尽量不要在大量数据上定义游标,尽量不要使用游标上更新数据 Cursor:Global for--全局游标 Cursor:Local for--局部游标 LOCAL意味着游标的生存周期只在批处理或函数或存储过程中可见 GLOBAL意味着游标对于特定连接作为上下文,全局内有效 --第一步:

Cursor 是每行的集合. 使用 moveToFirst() 定位第一行. 你必须知道每一列的名称.你必须知道每一列的数据类型.Cursor 是一个随机的数据源. 所有的数据都是通过下标取得. Cursor所指向的就是每一条数据. 方法: close() 关闭游标,释放资源 getColumnCount() 返回所有列的总数 getColumnIndex(String columnName) 返回指定列的名称,如果不存在返回-1 getColumnIndexOrThrow(String col

http://www.java2s.com/Code/SQL/Cursor/Outputdatainacursor.htm mysql> mysql> mysql> CREATE TABLE Employee( -> id int, -> first_name VARCHAR(15), -> last_name VARCHAR(15), -> start_date DATE, -> end_date DATE, -> salary FLOAT(8,2)

import java.io.InputStream; import java.io.Reader; import java.net.URL; import java.sql.Connection; import java.sql.NClob; import java.sql.ParameterMetaData; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.RowId; import

declare : CURSOR cursor_name IS select_statement ; open : OPEN cursor_name if the query returns no rows when the cursor is opened , PL/SQL does not raise an exception . However , you can test the status of the cursor after a fetch using the SQL%ROWCO

SQL statements   This topic contains tables that list the SQL statements classified by type. SQL schema statements (Table 1) SQL data change statements (Table 2) SQL data statements (Table 3) SQL transaction statements (Table 4) SQL connection statem

Select PeopleTools, Utilities, Debug, Trace SQL to access the Trace SQL page. You use this page to change the SQL tracing options while you're online. Your Configuration Manager settings are not affected: Trace SQL Statement Select to show the SQL st

SQL Server database administrators may frequently need in especially development and test environments  instead of the production environments to kill all the open connections to a  specific database in order to process SQL Server maintenance task ov

二.知识点总结 When the model query APIs don’t go far enough, you can fall back to writing raw SQL. go far enough:远远不够fall back to:求助 raw:原始的,未加工的 Django提供两种方式执行(performing)原始的SQL查询: (1) . Manager.raw():执行原始查询并返回模型实例 (2) . Executing custom SQL directly :直接执

declare v_sql varchar2(200); begin loop v_sql :='select seq1.nextval from dual'; execute immediate v_sql; end loop; end; SQL> select * from (select SAMPLE_TIME, SESSION_ID, NAME, P1, P2, P3 from v$active_session_history ash, v$event_name enm where as

1.insert import mysql.connector import os import codecs #设置数据库用户名和密码 user='root';#用户名 pwd='root';#密码 host='localhost';#ip地址 db='mysql';#所要操作数据库的名字 charset='UTF-8' cnx=mysql.connector.connect(user=user, password=pwd, host=host, database=db)#设置游标 curso

When Oracle Database executes a SQL statement, it stores the result set and processing information in an unnamedprivate SQL area. A pointer to this unnamed area, called acursor, lets youretrieve the rows of the result set one at a time.Cursor attribu