SQL>select * from user_ind_columns where index_name=upper('&index_name'); PS: 查看某表的约束条件 SQL>select constraint_name, constraint_type,search_condition, r_constraint_name from user_constraints where table_name = upper('&table_name'); SQL>select c.constraint_name,c.constraint_type,cc...
CONSTRAINT_NAME|CONSTRAINT_TYPE|SEARCH_CONDITION|---+---+---+EMP_LAST_NAME_NN|C|"LAST_NAME"ISNOTNULL|EMP_EMAIL_NN|C|"EMAIL"ISNOTNULL|EMP_HIRE_DATE_NN|C|"HIRE_DATE"ISNOTNULL|EMP_JOB_NN|C|"JOB_ID"ISNOTNULL|EMP_SALARY_MIN|C|salary>0|EMP_EMAIL_UK|U||EMP_EMP_ID_PK|P||EMP_...
SEARCH_CONDITIONString檢查條件約束之搜尋條件的文字。 R_OWNERString參考條件約束中的參考資料表擁有人。 R_CONSTRAINT_NAMEString參考資料表之唯一的條件約束定義的名稱。 DELETE_RULEString參考條件約束的刪除規則 (CASCADE 或 NO ACTION)。 狀態String條件約束的強制狀態 (ENABLED 或 DISABLED)。
SQL> select CONSTRAINT_NAME C_NAME,INDEX_NAME,CONSTRAINT_TYPE,Search_condition,R_CONSTRAINT_NAME R_NAME from user_constraints where TABLE_NAME='DEPT'; SQL> select OWNER,CONSTRAINT_NAME ,COLUMN_NAME,POSITION from User_cons_columns where TABLE_NAME='DEPT'; How to find constraint by name in Or...
SEARCH_CONDITIONString检查约束的搜索条件的文本。 R_OWNERString在引用约束中引用的表的所有者。 R_CONSTRAINT_NAMEString所引用表的唯一约束定义的名称。 DELETE_RULEString删除引用约束的规则(CASCADE 或 NO ACTION)。 状态String约束的强制执行状态(ENABLED 或 DISABLED)。
Because of the searchmechanism for unique key constraints on multiple columns, you cannot haveidentical values in the non-null columns of a partially null composite uniquekey constraint. 二. 相关测试 2.1 测试unique index 和 uniqueconstraint SYS@anqing2(rac2)> create table ut(idnumber,phone varch...
select * from user_indexes where table_name='表名' ; 查看索引被索引的字段 select * from user_ind_columns where index_name=upper('&index_name'); PS: 查看某表的约束条件 select constraint_name, constraint_type,search_condition, r_constraint_name from user_constraints where table_name = upper...
Because of the searchmechanism for unique key constraints on multiple columns, you cannot haveidentical values in the non-null columns of a partially null composite uniquekey constraint. 二. 相关测试 2.1 测试unique index 和 uniqueconstraint
SQL>select text from user_views where view_name=upper('&view_name'); 1. 2. 3. 4. 5. 6. 6、同义词 复制 查看同义词的名称 SQL>select * from user_synonyms; 1. 2. 7、约束条件 复制 查看某表的约束条件 SQL>select constraint_name, constraint_type,search_condition, r_constraint_name ...
When you update a unique constraint column in an Oracle database and multiple rows are hit, data conflicts may occur. In extreme scenarios, there may be data inconsistency. The XMLTYPE type is converted to CLOB or BLOB in the Oracle database. The usage restrictions are the same as those ...