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;
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