SYS.ALL_CONSTRAINTS的定义如下: CREATE OR REPLACE VIEW ALL_CONSTRAINTS (owner, constraint_name, constraint_type, table_name, search_condition, r_owner, r_constraint_name, delete_rule, status, deferrable, deferred, validated, generated, bad, rely, last_change, index_owner, index_name, invalid, ...
SELECT* FROMall_constraints WHEREtable_name ='T_USER'ANDowner ='SCOTT'; 结果如下: 1 2 3 4 5 6 7 SQL>SELECT* 2FROMall_constraints 3WHEREtable_name ='T_ORDER'ANDowner ='SCOTT'; OWNER CONSTRAINT_NAME CONSTRAINT_TYPE TABLE_NAME SEARCH_CONDITION R_OWNER R_CONSTRAINT_NAME DELETE_RULE STATU...
So, we can easily find all the constraints on the table in Oracle using data dictionary views. We can then take whatever action like modify, disable, or drop, we want to take on these constraints. Constraints are enforcing data integrity rules in the Oracle database and we must be careful...
SELECTstatement1[UNION | UNION ALL | INTERSECT | MINUS]SELECTstatement2; UNION和UNION ALL用来获取两个或两个以上结果集的并集: UNION操作符会自动去掉合并后的重复记录。 UNION ALL返回两个结果集中的所有行,包括重复的行。 例如,合并职位是’MANAGER’的员工和薪水大于2500的员工集合,查看两种方式的结果差别:...
SET CONSTRAINTS ALL DEFERRED; SET CONSTRAINT XXX DEFERRED; 当前会话的Constraint Checks. ALTER SSSSION SET CONSTRAINTS ALL deferred; ALTER SSSSION SET CONSTRAINT xxx deferred; 约束信息 SELECT*FROMDBA_CONSTRAINTS;SELECT*FROMALL_CONSTRAINTS;SELECT*FROMUSER_CONSTRAINTS;SELECT*FROMDBA_CONS_COLUMNS;SELECT*FROM...
SELECT * FROM ALL_CONSTRAINTS; SELECT * FROM USER_CONSTRAINTS; SELECT * FROM DBA_CONS_COLUMNS; SELECT * FROM ALL_CONS_COLUMNS; SELECT * FROM USER_CONS_COLUMNS; 复制代码 约束有四种状态:ENABLE、VALID、INVALID、DISABLE 约束的检查机制 IMMEDIATE语句级:Oracle performs its constraint checking after the...
GRANTALTERSESSIONtooms_user;GRANTCREATESESSIONtooms_user;GRANTCONNECTtooms_user;GRANTSELECTonALL_CONSTRAINTStooms_user;GRANTSELECTonALL_INDEXEStooms_user;GRANTSELECTonALL_IND_COLUMNStooms_user;-- 查询对象的一些属性信息GRANTSELECTonALL_OBJECTStooms_user;GRANTSELECTonALL_TAB_COLStooms_user;-- 查询黑白名单用...
USER_SEQUENCES、DBA_SEQUENCES、ALL_SEQUENCES、 USER_TABLESPACES 和 DBA_TABLESPACES 表或视图 USER_CONSTRAINTS、DBA_CONSTRAINTS、ALL_CONSTRAINTS、 USER_CONS_COLUMNS、DBA_CONS_COLUMNS、ALL_CONS_COLUMNS、 USER_INDEXES、DBA_INDEXES、ALL_INDEXES、 USER_IND_COLUMNS、DBA_IND_COLUMNS、ALL_IND_COLUMNS、 USER...
ALL_CONSTRAINTS ALL_INDEXES ALL_IND_COLUMNS ALL_OBJECTS ALL_SYNONYMS ALL_TAB_COMMENTS ALL_TABLES ALL_TAB_COLUMNS ALL_USERS ALL_VIEWS COL_PRIVILEGES DICTIONARY DUAL TABLE_PRIVILEGES USER_CATALOG USER_COL_COMMENTS USER_CONSTRAINTS USER_CONS_COLUMNS ...
信息dba_stmt_audit_opts审计设置信息dba_audit_object对象审计结果信息dba_audit_session会话审计结果信息dba_indexes用户方式的索引信息user_开头user_objects用户对象信息user_source数据库用户的一切资源对象信息user_segments用户的表段信息user_tables用户的表对象信息user_tab_columns用户的表列信息user_constraints用户的...