网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)
多选题
关于Truncate table, 以下()描述是错误的。
A

Truncate table 可跟Where从句,根据条件进行删除

B

Truncate table 用来删除表中所有数据

C

触发器对Truncate table无效

D

delete 比Truncate table速度快


参考答案

参考解析
解析: 暂无解析
更多 “多选题关于Truncate table, 以下()描述是错误的。ATruncate table 可跟Where从句,根据条件进行删除BTruncate table 用来删除表中所有数据C触发器对Truncate table无效Ddelete 比Truncate table速度快” 相关考题
考题 如果要删除Student数据库中的Information表,可以使用下列哪个命令?一——A.ALTER TABLE InformationB.TRUNCATE TABLE InformationC.DROP。TABLE InformationD.DELETE TABLE Information

考题 Delete form. tablename与TRUNCATE table tablename的区别

考题 delete from tablea truncate table tablea的区别

考题 若要删除book表中所有数据,以下语句错误的是哪两项?() A.delete all from bookB.delete from bookC.truncate table bookD.drop table book

考题 如果要删除A数据库中的B表,可以使用下列哪个命令?______A.ALTER TABLE BB.TRUNCATE TABLE BC.DROP TABLE BD.DELETE TABLE B

考题 删除emp表中所有数据,且无法rollback,以下语句哪个命令可以实现()A、truncate table empB、drop table empC、delete * from empD、delete from emp

考题 关于Truncate table, 以下()描述是错误的。A、Truncate table 可跟Where从句,根据条件进行删除B、Truncate table 用来删除表中所有数据C、触发器对Truncate table无效D、delete 比Truncate table速度快

考题 删除emp表的全部数据,但不提交,以下正确的语句是()A、DELETE * FROM. EMPB、DELETE FROM EMPC、TRUNCATE TABLE EMPD、DELETE TABLE EMP"

考题 如下能正确执行的语句是()A、select * from table_name where 1=2B、truncate table table_nameC、delete from table_name where null=nullD、alter table table_name add column idd int

考题 关于Truncatetable,以下()描述是正确的。A、Truncate table 可跟Where从句,根据条件进行删除B、Truncate table 用来删除表中所有数据C、触发器对Truncate table无效D、delete 比Truncate table速度快

考题 关于Truncatetable,以下()描述是错误的。A、Truncate table可跟Where从句,根据条件进行删除。B、Truncate table用来删除表中所有数据。C、触发器对Truncate table无效。D、delete比Truncate table速度快。

考题 若要删除book表中所有数据,以下语句错误的是()A、truncate table bookB、delete * from bookC、drop table bookD、delete from book

考题 You enabled Flashback Data Archive on the INVENTORY table.Which DDL operation is supported on the table after enabling Flashback Data Archive?()A、Drop the table.B、Partition the tableC、Truncate the table.D、Add a column to the table.E、Rename a column in the table.

考题 Which two partitioned table maintenance operations support asynchronous Global Index Maintenance inOracle database 12c?()A、ALTER TABLE SPLIT PARTITIONB、ALTER TABLE MERGE PARTITIONC、ALTER TABLE TRUNCATE PARTITIOND、ALTER TABLE ADD PARTITIONE、ALTER TABLE DROP PARTITIONF、ALTER TABLE MOVE PARTITION

考题 You enabled Flashback Data Archive on the INVENTORY table. Which DDL operation is supported on the table after enabling Flashback Data Archive?()  A、 Drop the table.B、 Partition the table.C、 Truncate the table.D、 Add a column to the table.E、 Rename a column in the table.

考题 For which two SQL statements can you use the Flashback Table feature to revert a table to its previous state?()A、UPDATE TABLEB、CREATE CLUSTERC、TRUNCATE TABLED、ALTER TABLE MOVEE、INSERT INTO···VALUESF、ALTER TABLE···DROP COLUMNG、ALTER TABLE···DROP PARTITION

考题 Evaluate the SQL statement:TRUNCATE TABLE DEPT;Which three are true about the SQL statement? ()A、It releases the storage space used by the table.B、It does not release the storage space used by the table.C、You can roll back the deletion of rows after the statement executes.D、You can NOT roll back the deletion of rows after the statement executes.E、An attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error.F、You must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table

考题 Which three descriptions are correct about the effects of the TRUNCATE command on a table()A、The corresponding indexes for the table are also truncated.B、Delete triggers on the table are fired during the execution of the TRUNCATE command.C、The child table is truncated when the TRUNCATE command is applied on the parent table.D、The high-water mark (HWM) is set to point to the first usable data block in the table segment.E、No undo or very little undo data is generated during the execution of the TRUNCATE command

考题 假定表A中有十万条记录,要删除表中的所有数据,但仍要保留表的结构,请问用以下哪个命令效率最高()A、delete from a;B、drop table a;C、trunc table a;D、truncate table a;E、以上所述都不正确

考题 delete from system.table1与truncate table system.table1区别是什么?

考题 用于删除表中所有数据行的命令是()。A、DELETE TABLEB、TRUNCATE TABLEC、DROP TABLED、ALTER TABLE

考题 多选题关于Truncatetable,以下()描述是正确的。ATruncate table 可跟Where从句,根据条件进行删除BTruncate table 用来删除表中所有数据C触发器对Truncate table无效Ddelete 比Truncate table速度快

考题 多选题关于Truncatetable,以下()描述是错误的。ATruncate table可跟Where从句,根据条件进行删除。BTruncate table用来删除表中所有数据。C触发器对Truncate table无效。Ddelete比Truncate table速度快。

考题 多选题Evaluate the SQL statement: TRUNCATE TABLE DEPT;Which three are true about the SQL statement? ()AIt releases the storage space used by the table.BIt does not release the storage space used by the table.CYou can roll back the deletion of rows after the statement executes.DYou can NOT roll back the deletion of rows after the statement executes.EAn attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error.FYou must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table.

考题 多选题Which two partitioned table maintenance operations support asynchronous Global Index Maintenance inOracle database 12c?()AALTER TABLE SPLIT PARTITIONBALTER TABLE MERGE PARTITIONCALTER TABLE TRUNCATE PARTITIONDALTER TABLE ADD PARTITIONEALTER TABLE DROP PARTITIONFALTER TABLE MOVE PARTITION

考题 问答题delete from system.table1与truncate table system.table1区别是什么?

考题 多选题Which three descriptions are correct about the effects of the TRUNCATE command on a table()AThe corresponding indexes for the table are also truncated.BDelete triggers on the table are fired during the execution of the TRUNCATE command.CThe child table is truncated when the TRUNCATE command is applied on the parent table.DThe high-water mark (HWM) is set to point to the first usable data block in the table segment.ENo undo or very little undo data is generated during the execution of the TRUNCATE command