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

更多“delete from system.table1与truncate table system.table1区别是什么?”相关的问题
第1题

A、DELETE * FROM TABLE T03  B、DELETE ALL FROM T03  C、DELETE * FROM T03  D、DELETE FROM T03  

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第2题

A、delete*from"订单"  B、delete*from订单  C、delete*from"订单ID"  D、delete*from订单ID  

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第3题

A、REVOKE ADD, DELETE FROM USER tom ON TABLE tab1  B、REVOKE ADD, DELETE ON TABLE tab1 FROM USER tom  C、REVOKE INSERT, DELETE FROM USER tom ON TABLE tab1  D、REVOKE INSERT, DELETE ON TABLE tab1 FROM USER tom  

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第4题

A、delete*from订单where订单ID="A10257"  B、delete*from订单where订单ID=A10257  C、delete*from订单ID where订单="A10257"  D、delete*from订单ID where订单=A10257  

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第5题

A、A. user@router# system delete configuration rescue  B、B. user@router> request system configuration rescue delete  C、C. user@router# delete rescue configuration  D、D. user@router> file delete rescue-configuration  

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第6题

A、A. user@router# system delete configuration rescue  B、B. user@router> request system configuration rescue delete  C、C. user@router# delete rescue configuration  D、D. user@router> file delete rescue-configuration  

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第7题

A、DELETE * FROM. EMP  B、DELETE FROM EMP  C、TRUNCATE TABLE EMP  D、DELETE TABLE EMP"  

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第8题

A、DELETE FROM employees WHERE employee_id = (SELECT employee_id FROM employees);  B、DELETE * FROM employees WHERE employee_id = (SELECT employee_id FROM new_ employees);  C、DELETE FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = 'carrey');  D、DELETE * FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = 'carrey');  

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第9题

A、DELETE FROM employees WHERE employee_id = (SELECT employee_id FROM employees);  B、DELETE * FROM employees WHERE employee_id = (SELECT employee_id FROM new_ employees);  C、DELETE FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = ('Carrey')'  D、DELETE * FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE last_ name = ('Carrey')'  

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