sql: select username,default_tablespace from dba_users; 9.给用户分配了表空间,用户还不能登陆(没有登录权限),因此还需要为用户分配权限 sql: grant create session,create table,create view,create sequence,unlimited tablespace toysm; sql:grant imp_full_database to empi; 10.oracle 开启表自动扩展: alte...
SQL>select * from emp where hiredate=to_date('1980-12-17','yyyy-mm-dd'); SQL>select * from emp where to_char(hiredate,'yyyy-mm-dd')='1980-12-17'; (3)求当前日期所在的月份的最后一天和第一天,显示格式为:yyyymmdd SQL>select to_char(last_day(sysdate),'yyyymmdd'),to_char(sysdate,...
EVALUATE_EVERY_ROW,IGNORE,IGNORE_UNSUPPORTED_EVALUATE_ONCE,IGNORE_UNSUPPORTED_EVALUATE_EVERY_ROWdirect_path_lock_wait--waitforaccess to table when currentlylocked(DefaultFALSE)PLEASENOTE:Command-line parameters may be specified either by
emp; SQL> create table stud02.employee as select * from scott.emp; 实体权限传递(with grant option): user01: SQL> grant select, update on product to user02 with grant option; // user02得到权限,并可以传递。 实体权限回收: user01: SQL>Revoke select, update on product from user02; //...
--SQL COMMAND --用户从客户端登录数据库 CONN58USER/123456@MYDB; CONNsystem/system@MYDB; --创建角色 CREATE ROLE "58ROLE"; CREATE ROLE "TESTROLE"; --授权 GRANT ALTER ANY TABLE TO "58ROLE"; GRANT ALTER ANY TABLE TO "58ROLE" WITH ADMIN OPTION; ...
本节主要介绍Oracle PL/SQL的迁移语法。迁移语法决定了关键字/功能的迁移方式。 PL/SQL是SQL和编程语言过程特性的集合。 SQL命令 Oracle语法 迁移后语法 set define off spool ORACLE.log create table product ( product_id VARCHAR2(20), product_name VARCHAR2(50) ); spool off /*set define off;*/ /*...
SQL*Plus Copy 命令的语法: 网管联盟bitsCN_com COPY {FROM database | TO database | FROM database TO database} {APPEND|CREATE|INSERT|REPLACE} destination_table [(column, column, column, ...)] USING query 我们分部分来解释一下: COPY – 这个不太需要解释,主命令,声明要执行COPY操作 ...
CreateTime = DateTime.Now, CustomId =1, Name ="a", Price =1}).ExecuteCommand(); mysqldb.Queryable<Order>().ToList(); sqlServerdb.Queryable<Order>().ToList(); db.CommitTran(); Feature6 : Singleton Pattern Implement transactions across methods ...
grant read,write on directory DATA_PUMP_DIR to system; 1. 或者system用户登录创建目录 alter user system identified by "xxxxx"; create or replace directory DATA_PUMP as '/data/tmp'; 1. 2. 二、 导出数据 1. 常用选项 排除指定表 EXCLUDE= ...
PL/SQL 블록을 사용하면 더 쉽게 할 수 있습니다. 예를 들어, 다음과 같은 테이블이 있는 경우 create or replace type point as object (x number, y number); create table point_values_table of point; create table point_ref_table (p...