db2常用命令(三)

 

36. 数据库特权

grant connect,createtab,dbadm on database to user 

 

37. 索引特权

grant control on index index-name to user 

 

38. 信息帮助 (? XXXnnnnn )

例:? SQL30081 

 

39. SQL 帮助(说明 SQL 语句的语法)

help statement 
例如，help SELECT 

 

40. SQLSTATE 帮助(说明 SQL 的状态和类别代码)

? sqlstate 或 ? class-code 

 

41. 更改与"管理服务器"相关的口令

db2admin setid username password 

 

42. 创建 SAMPLE 数据库

db2sampl 
db2sampl F:(指定安装盘) 

 

43. 使用操作系统命令

! dir

 

44. 转换数据类型 (cast)

SELECT EMPNO, CAST(RESUME AS VARCHAR(370)) 
FROM EMP_RESUME 
WHERE RESUME_FORMAT = 'ascii' 

 

45. UDF

 

要运行 DB2 Java 存储过程或 UDF，还需要更新服务器上的 
DB2 数据库管理程序配置，以包括在该机器上安装 JDK 的路径 
db2 update dbm cfg using JDK11_PATH d:\sqllib\java\jdk 
TERMINATE 
update dbm cfg using SPM_NAME sample 

 

46. 检查 DB2 数据库管理程序配置

db2 get dbm cfg 

 

47. 检索具有特权的所有授权名 SELECT DISTINCT GRANTEE, GRANTEETYPE, 'DATABASE' FROM SYSCAT.DBAUTH

UNION 
SELECT DISTINCT GRANTEE, GRANTEETYPE, 'TABLE ' FROM SYSCAT.TABAUTH 
UNION 
SELECT DISTINCT GRANTEE, GRANTEETYPE, 'PACKAGE ' FROM SYSCAT.PACKAGEAUTH 
UNION 
SELECT DISTINCT GRANTEE, GRANTEETYPE, 'INDEX ' FROM SYSCAT.INDEXAUTH 
UNION 
SELECT DISTINCT GRANTEE, GRANTEETYPE, 'COLUMN ' FROM SYSCAT.COLAUTH 
UNION 
SELECT DISTINCT GRANTEE, GRANTEETYPE, 'SCHEMA ' FROM SYSCAT.SCHEMAAUTH 
UNION 
SELECT DISTINCT GRANTEE, GRANTEETYPE, 'SERVER ' FROM SYSCAT.PASSTHRUAUTH 
ORDER BY GRANTEE, GRANTEETYPE, 3 
create table yhdab 
(id varchar(10), 
password varchar(10), 
ywlx varchar(10), 
kh varchar(10)); 
create table ywlbb 
(ywlbbh varchar(8), 
ywmc varchar(60)) 

 

 

48. 修改表结构

alter table yhdab ALTER kh SET DATA TYPE varchar(13); 
alter table yhdab ALTER ID SET DATA TYPE varchar(13); 
alter table lst_bsi alter bsi_money set data type int;