1。找到引用这个表外键名称 SELECT * FROM sys.foreign_keys WHERE referenced_object_id=OBJECT_ID('User'); 删除外键 删除掉引用表的外键 ALTER TABLE dbo.XX DROP constraint FK_User_XX
错误码[1701] [42000]是一个SQL错误,通常表示尝试对一个被外键约束引用的表执行TRUNCATE TABLE操作。这种操作是不被允许的,因为TRUNCATE TABLE会立即删除表中的所有行,并且不会触发任何删除触发器,这可能导致外键约束的完整性被破坏。 为什么无法截断被外键引用的表 TRUNCATE TABLE是一种快速删除表中所有行的操作,它...
王林森,TRUNCATE TABLE,外键,表,该表正由 FOREIGN KEY 约束引用,无法,截断,wlsandwho 试图执行truncate table B 代码需要一句一句执行:http://www.cnblogs.com/wlsandwho 1USEtempdb2GO34--创建表B5CREATETABLEtB(bNVARCHAR(10)PRIMARYKEY)6GO7--插入一个测试数据8INSERTINTOtB9( b )10VALUES( N'wlsandwho'...
SQL> create table tbl_a(id number, remark varchar2(1)); Table created. SQL> create table tbl_b(id number, a_id number, remark varchar2(1)); Table created. SQL> alter table tbl_a add constraint pk_tbl_a primary key(id); Table altered. SQL> alter table tbl_b add constraint pk_...
TRUNCATE TABLE可以在事务中回滚操作。 在Fabric SQL 数据库中,截断表会删除该表的 Fabric OneLake 中的所有镜像数据。 限制 不能在以下表上使用TRUNCATE TABLE: 由FOREIGN KEY约束引用。 可以截断具有引用自身的外键的表。 参与索引视图的表。 通过使用事务复制或合并复制发布的表。
SQL>truncate table tbl_a;Table truncated. 可以执行。 3. 向主表插入一条记录,再次执行truncate 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SQL>insert into tbl_avalues(1,'a');1row created.SQL>commit;Commit complete.SQL>truncate table tbl_a;truncate table tbl_a*ERRORat line1:ORA-02266...
There are two ways to accomplish this task. The first is by utilizing a SQL procedure or script. The second method involves using plain SQL statements with theIFcondition to check for the existence of the table before truncating it. Alternatively, you can use theCreatetable in conjunction with...
Are referenced by a FOREIGN KEY constraint. Participate in an indexed view. Are published by using transactional replication or merge replication. For tables with one or more of these characteristics, use the DELETE statement instead. TRUNCATE TABLE cannot activate a trigger because the operation does...
Are referenced by a FOREIGN KEY constraint. Participate in an indexed view. Are published by using transactional replication or merge replication. For tables with one or more of these characteristics, use the DELETE statement instead. TRUNCATE TABLE cannot activate a trigger because the operation does...
Are referenced by a FOREIGN KEY constraint. Participate in an indexed view. Are published by using transactional replication or merge replication. For tables with one or more of these characteristics, use the DELETE statement instead. TRUNCATE TABLE cannot activate a trigger because the operation does...