---清空cls
----查看数据版本
select * from sysibm.sysversions
----创建数据库实例
create db tsissdb using codeset gbk territory cn pagesize 8 K catalog tablespace managed by database using (device '/dev/rlv_sdb_clg' 1048576);
--备份路径可以修改
db2 backup db tsissdb to /tmp/initdata/ compress
---查看用户，表，及其主键
select tabschema,tabname,colname from syscat.colidentattributes order by tabschema,tabname
---重启数据
Restart db twcs177
---激活数据库
Activate db twcs177
---停止数据库
Deactivate db twcs177
---数据库链接名
db2 catalog tcpip mode mynode remote 10.2.2.177 server 62000
---链接数据库
connect to twcs177 user tsisusr using tsisusr
--附权限load用 要切到实例
db2 grant load on database to user tsisusr
---导入csv数据
import from D:\DB2\tg_debtcash_detail.csv of del insert into tg_debtcash_detail
import from D:\TG_DEBT_TRADE.del of del insert into TG_DEBT_TRADE;
import from D:\htr_mon_total_divide_normal.del of del commitcount 10000 insert_update into tabname
---导入del数据
export to D:\TD_ENUMVALUE.del of del select * from TD_ENUMVALUE where S_TYpecode ='TW0086'
---查询表10条数据
select * from tg_debtissue_detail where 1=1 fetch first 10 rows only with ur
--查看表的外键
SELECT * FROM SYSCAT.REFERENCES WHERE TABNAME='TG_DEBTISSUE_DETAIL'
----查看表空间
List tablespaces show detail;
----查看表空间使用情况
select * from sysibm.systablespaces
---查看表所属表空间
select TABNAME,tbspace from syscat.tables where TABNAME='TA_LOCALCASH_INFO';
---查看表空间的表
select TABNAME from syscat.tables where tBSPACE='USERSPACE1';
select * from sysibm.systablespaces
--查看表分区
SELECT * FROM SYSCAT.datapartitions WHERE TABNAME='TG_DEBTISSUE_DETAIL'
--添加表分区
alter table TG_DEBTISSUE_DETAIL add partition statis_month STARTINT'201301' INCLUSIVE ENDING '20090102' INCLUSIVE
---创建表时指定表空间
create table_xxx(col1.....) in USERSPACE1
---查看表索引
describe indexes for table TA_TRL_GO_COMEBILL show detail
---查看表字段状况
select * from sysibm.syscolumns where TBNAME='TG_CA_OPERPLAN';
---查看表结构
describe table TA_LOCALCASH_INFO
---查看表分区
db2 describe data partitions for table TA_LOCALCASH_INFO
db2 describe data partitions for table TA_LOCALCASH_INFO show detail
---查看表活动分区名称
select seqno PART0 from syscat.datapartitions where tabname='TA_LOCALCASH_INFO' order by seqno;
---清除一个大表、
alter TA_LOCALCASH_INFO activate not logged initally with empty table or
import from null_file of del into TA_LOCALCASH_INFO
---重命名数据表
rename old_table_name to new_table_name
---查看BUFFER情况
select * from sysibm.sysbufferpools
---修改缓冲池大小
alter bufferpool ibmdefaultbp size 10240
--- 如果s_prepfieldtwo字段值为空则取字段 s_prepfieldone的值
select value(s_prepfieldtwo,s_prepfieldone) s_prepfieldtwo from TA_FUND_OTHER where s_orgcode='230000000002'
select coalesce (s_prepfieldtwo,s_prepfieldone) s_prepfieldtwo from TA_FUND_OTHER where s_orgcode='230000000002'