版本过期:
update t_sreg set logincount='0'
sqh2
fLR8ZC-855550-6967535711193847
sqh3
fLR8ZC-855550-6967535711193848
sqh4
fLR8ZC-855550-6967535711193849
Insert into t_xtgn (FM00,FM05,FM06,FM07,URL,IMG,ORDERS,FLAG) values (1201091023490140004,'002400050001','领导批示',1,null,null,30401,0);
select to_char(max(fm00)) from t_xtgn
1. 表结构修改
【新增字段】:
alter table 表名 add 字段 字段类型
如:alter table t_user add photocode varchar (100);
【修改字段】(字段已存在):
alter table 表名 modify 字段名 字段类型 (长度)
如:修改字段的长度为 4000
oracle:
alter table t_sqcd modify itemid varchar(4000)
改成clob
ALTER TABLE T_TOPIC ADD (CONTENTE CLOB);
ALTER TABLE T_TOPIC ADD (CONTENTE CLOB);
修改字段类型:
alter table tb_test modify permile number(10,0);
UPDATE T_TOPIC createtime = CAST(字段名1 AS VARCHAR2(30));
sqlserver:
alter table t_sqcd alter column itemid varchar(4000)
【删除】:
Alter table 表名 drop column 字段名
如删除用户表的photo列
Alter table t_user drop column photo;
清楚表中的记录:
truncate table employee
建立临时表:清除原数据的记录
insert into employee select * from temp_emp;
insert into jnlg (FM00,FM05,FM06,FM07,URL,IMG,ORDERS,FLAG)
select '1109211657170687000', '000800020012', '机构设置', '3', NULL, NULL, 130212, 0
2、备份还原数据库: (oracle)
导入数据:
进入控制台在cmd中输入: imp zc_true/master@//192.168.0.106:1523/orcl2 file='d:\EE.dmp' full=y
fromuser='gz_true' touser='zc_true'
进入控制台在cmd中输入 :exp zc_true/master@//192.168.0.106:1523/ORCL2 file=d:\zc20111030.dmp
exp zc_true/master@//192.168.0.58:1521/ORCL file=d:\zc_true20120323.dmp
exp hnsydv/master@//192.168.0.137:1521/orcl file=d:\zgznsdv20120314.dmp
imp nbjyj/master@//192.168.0.251:1521/orcl file='d:\EXPDAT.dmp' fromuser='titans_sysdba' touser='nbjyj'
备注:
system/master 为账号的用户名和密码
fromuser 要根据相应的提示的来源进行填写
touser 要导入的用户
file 导入的dmp文件
oracle新用户创建:
用户创建:
create user fszwlyinit identified by master
-- 进行授权
grant connect,dba,resource to fszwlytest
视图创建:
create or replace view v_sx_zt as
select wg39,wg00,wg38,wg11,sortname,wg12,wg13,
(select sum(wg59) from t_sxjngl s where s.wg39 = wg39) wg59 ,
(select min(id) from t_mediasource where mainid = wg11 and filetype = 'jpg') previewid from t_sxjngl where wg00 in
(select min(wg00) mainid from t_sxjngl where wg39 is not null and isopen is null group by wg39);
--设置主键
alter table [TableName] add constraint PK_TableName primary key (P_ID)
如:alter table t_subjectitem add constraint pk_t_subjectitem_id primary key(id)
--删除主键
alter table [TableName] drop constraint PK_TableName