RESTRICT(default): refuses to truncate if any of the tables have foreign-key references from tables that are not listed in the command. partition_name Indicates the partition in the target partition table. Value
This command deletes all the records from theDepartmenttable but doesn’t delete the table itself. Next, we can verify this with this SQL query: SELECT * FROM Department; We can see the output of the executed SQL query: As seen above, all the records were deleted and the table still ex...
SQL>create tabletbl_a(id number,remarkvarchar2(1));Table created.SQL>create tabletbl_b(id number,a_id number,remarkvarchar2(1));Table created.SQL>alter table tbl_a add constraint pk_tbl_a primarykey(id);Table altered.SQL>alter table tbl_b add constraint pk_tbl_b primarykey(id);Table...
F5执行,如图: 参考:http://blog.sqlauthority.com/2010/03/04/sql-server-rollback-truncate-command-in-transaction/ --EOF-- Author:兴百放 Web:http://xbf321.cnblogs.com/ Time:2010.3.12
// command: // SELECT * FROM USER_CONSTRAINTS WHERE TABLE_NAME = "tabnam"; 比较清楚地说明了问题,以及解决方法:可以在执行前,先禁用外键约束,执行truncate后再恢复外键约束。 4. 禁用外键约束,删除后执行恢复操作 看到外键约束名称:FK_TBL_B_A: ...
SQL> delete from mytest; --删除表的所有数据,这个过程太长了,涉及到回滚数据的创建,库也不是我一个人在折腾 12522708 rows deleted Executed in 903.031 seconds SQL> commit; --提交变更 Commit complete Executed in 0 seconds SQL> select count(*) from mytest; --表已经空了,但没有想象中快速完成查...
always return "dbo" when run "select current_user" command as a windows account An error occurred during the execution of xp_cmdshell. A call to 'CreateProcessAsUser' failed with error code: '1314' Are SQL login passwords sent in clear text??? assign role of SQLAgentOperatorRole Audit fi...
SQL Delete StatementThe DELETE Statement is used to delete rows from a table.Syntax of a SQL DELETE StatementDELETE FROM table_name [WHERE condition]; table_name -- the table name which has to be updated.NOTE: The WHERE clause in the sql delete command is optional and it identifies the ...
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.