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
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_...
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...
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...
table_name 要截断或从中删除所有行的表的名称。 table_name 须是文本。 table_name 不能是 OBJECT_ID() 函数或变量。 WITH ( PARTITIONS ( { <partition_number_expression | >range< } [ , ...n ] ) ) 适用于:SQL Server 2016 (13.x) 及更高版本。 指定要截断或删除其中所有行的分区。 如果未...
SQL TRUNCATETABLEPartitionTable1WITH(PARTITIONS(2,4,6TO8)); GO C. 復原截斷作業 下列範例示範TRUNCATE TABLE可以復原交易內的作業。 建立具有三個數據列的測試數據表。 SQL USE[tempdb]; GOCREATETABLETruncateTest (IDINTIDENTITY(1,1)NOTNULL); GOINSERTINTOTruncateTestDEFAULTVALUES; GO 3 ...
Once deleted, all data stored in that table will be lost forever!. Syntax The syntax of using TRUNCATE TABLE statement in T-SQL (Transact-SQL) is given below: TRUNCATE TABLE table_name; Example: Consider a database containing a table called Employee with the following records: EmpIDName...
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...