gau*_*rat 1 database oracle database-administration
我需要数据字典视图来获取有关 oracle 中所有数据字典视图详细信息的所有信息
select * from user_dba;
desc dba_directiories;
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它被称为字典。
看起来像这样:
SQL> desc dictionary
Name Null? Type
----------------------------------------- -------- ----------------------------
TABLE_NAME VARCHAR2(30)
COMMENTS VARCHAR2(4000)
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您可以这样查询(例如,搜索那些谈论“约束”的内容):
SQL> select * From dictionary where lower(comments) like '%constraint%';
TABLE_NAME COMMENTS
------------------------- --------------------------------------------------
ALL_CONSTRAINTS Constraint definitions on accessible tables
ALL_CONS_COLUMNS Information about accessible columns in constraint
definitions
USER_CONSTRAINTS Constraint definitions on user's own tables
USER_CONS_COLUMNS Information about accessible columns in constraint
definitions
SQL>
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