oracle enable / disable all constraint begin for i in (select constraint_name, table_name from user_constraints where table_name='') LOOP execute immediate 'alter table '||i.table_name||' enable constraint '||i.constraint_name||''; end loop; end; / COMMIT; -- begin for i in (selec...
ERROR at line 1: ORA-00001: unique constraint (ZHOUYF.SYS_C0010843) violated select CONSTRAINT_NAME,CONSTRAINT_TYPE,TABLE_NAME,STATUS,DEFERRABLE,DEFERRED,VALIDATED,INVALID from user_constraints; SQL> / CONSTRAINT_NAME C TABLE_NAME STATUS DEFERRABLE DEFERRED VALIDATED INVALID --- - --- --- ---...
FROM user_constraints WHERE constraint_type ='R' AND status = 'ENABLED' ) LOOP EXECUTE IMMEDIATE 'alter table "' ||i.table_name|| '" disable constraint ' ||i.constraint_name; END LOOP i; FOR i IN (SELECT table_name, constraint_name -- then disable all constraints FROM user_constraint...
constraint. An enabled validated constraint guarantees that all data is and will continue to be valid. If any row in the table violates the integrity constraint, the constraint remains disabled and Oracle returns an error. If all rows comply with the constraint, Oracle enables the constraint. Sub...
文档课题:oracle中constraint的enable validate、enable novalidate、disable validate、disable novalidate解析. 1、概念 oracle完整性约束为以下四种状态: enable validate:开启约束检查所有存在的数据 enable novalidate:开启约束不检查已存在的数据 disable validate:禁用约束,删除约束上的索引并禁止对约束列进行任何dml操作 ...
1、约束不起作用 2、无法保证约束是真实的(不对任何数据做约束检查) signifies that Oracle makes no effort to maintain the constraint (because it is disabled) and cannot guarantee that the constraint is true (because it is not being validated)....
The syntax to disable a foreign key in Oracle/PLSQL is: ALTER TABLE table_name DISABLE CONSTRAINT constraint_name;Example If you had created a foreign key as follows: CREATE TABLE supplier ( supplier_id numeric(10) not null, supplier_name varchar2(50) not null, contact_name varchar2(50)...
insert into test values(5, 'Oracle') ORA-02290:违反检查约束条件(MYHR.CK_ID) SQL> insert into test values(17,'ERP'); 1 row inserted SQL> commit; Commit complete 4测试2: Enable Novalidate SQL> alter table test disable constraint ck_id; ...
Oracle / PLSQL: Enable a foreign key Description. You may encounter a foreign key in Oracle that has been disabled. ... Syntax. The syntax for enabling a foreign key in Oracle/PLSQL is: ALTER TABLE table_name ENABLE CONSTRAINT constraint_name; ...
SQL> alter table a modify constraint ck_a disable validate; Table altered. --oracle 的语法真奇怪,前面我使用的是alter table a disable validate constraint ck_a;也可以。 --还是这里使用的语法更好1点。 SQL> insert into a values(19);