Oracle delete check constraint

- Disable check constraints

1 Grammar

DISABLE|ENABLE CONSTRAIT constraint_name

2 code

1. SQL> desc userinfo_c3
2. 名称是否为空?类型
3. -----------------------------------------------------------------------------
4. ID NOT NULL VARCHAR2(10)
5. USERNAME VARCHAR2(20)
6. SALARY NUMBER(5)
8. SQL>select constraint_name,constraint_type,status from user_constraints
9. 2where table_name='USERINFO_C3';
11. CONSTRAINT_NAME C STATUS
12. ---------------------------------------
13. SYS_C0011123 P ENABLED
14. CK_SALARY_NEW C ENABLED
17. SQL> alter table userinfo_c3
18. 2 disable constraint CK_SALARY_NEW;
20. 表已更改。
22. SQL>select constraint_name,constraint_type,status from user_constraints
23. 2where table_name='USERINFO_C3';
25. CONSTRAINT_NAME C STATUS
26. ---------------------------------------
27. SYS_C0011123 P ENABLED
28. CK_SALARY_NEW C DISABLED

 

Second, delete the check constraint

1 Grammar

DROP CONSTRAINT constraint_name

2 code

1. SQL> alter table userinfo_c3
2. 2 drop constraint CK_SALARY_NEW;
4. 表已更改。