脚本:查看约束信息

说明:首先要使用sys用户建立一个讲long转成字符串的函数
之后用sys用户调用脚本
该函数来源于 http://blog.163.com/yanenshun@126/blog/static/128388169201311318581758/ 
CREATE OR REPLACE FUNCTION sys.LONG_TO_CHAR(in_rowid      rowid,
in_owner      varchar,
in_table_name varchar,
in_column     varchar2)
RETURN varchar AS
text_c1 varchar2(32767);
sql_cur varchar2(2000);

begin
DBMS_OUTPUT.ENABLE(buffer_size => null);
sql_cur := 'select ' || in_column || ' from
' || in_owner || '.' || in_table_name || ' where rowid =
' || chr(39) || in_rowid || chr(39);
dbms_Output.put_line(sql_Cur) ;

--  execute immediate sql_cu     into text_c1;

text_c1 := substr(text_c1, 1, 4000);
RETURN TEXT_C1;
END;

SELECT OWNER,TABLE_NAME,constraint_name,constraint_type,TO_CHAR(wm_concat(column_name))
FROM
(SELECT
T1.OWNER,
T1.table_name,
T2.constraint_name,
CASE WHEN T1.constraint_type = 'P' then 'PRIMARY KEY'
WHEN T1.constraint_type = 'R' then 'FOREIGN KEY'
WHEN T1.constraint_type = 'U' then 'UNIQUE KEY'
WHEN T1.constraint_type = 'C' then 'CHECK'
END   constraint_type,
T2.column_name
FROM DBA_CONSTRAINTS  T1  ,DBA_CONS_COLUMNS T2
WHERE T1.owner=T2.owner
AND T1.table_name = T2.table_name
AND T1.constraint_name=T2.constraint_name
AND T1.constraint_type !='C'
AND T1.owner='BOSENRUI'
ORDER BY T1.OWNER,
T1.table_name,
T2.constraint_name,
constraint_type,
t2.position)
GROUP BY  OWNER,TABLE_NAME,constraint_name,constraint_type
UNION ALL

SELECT US.NAME OWNER ,
CEO.NAME  TABLE_NAME,
CON.NAME constraint_name,
'CHECK',
LONG_TO_CHAR(CDEF.ROWID,'SYS','CDEF$','CONDITION') check_condition
FROM SYS.CON$  CON  ,
SYS.USER$ US,
SYS.CDEF$ CDEF ,
sys."_CURRENT_EDITION_OBJ"  CEO
WHERE   CON.OWNER#=US.USER#
AND CON.CON# = CDEF.CON#
AND CEO.obj# = CDEF.obj#
AND CDEF.TYPE# IN (1,7)
and US.NAME='BOSENRUI'