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Evaluate these two SQL statements:SELECT last_name, salary, hire_dateFROM EMPLOYEES ORDRE BY salary DESC; SELECT last_name, salary, hire_dateFROM EMPOLYEES ORDER BY 2 DESC; What is true about them?（）
- A、The two statements produce identical results.
- B、The second statement returns a syntax error.
- C、There is no need to specify DESC because the results are sorted in descending order by default.
- D、The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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更多 “Evaluate these two SQL statements:SELECT last_name, salary, hire_dateFROM EMPLOYEES ORDRE BY salary DESC; SELECT last_name, salary, hire_dateFROM EMPOLYEES ORDER BY 2 DESC; What is true about them?（）A、The two statements produce identical results.B、The second statement returns a syntax error.C、There is no need to specify DESC because the results are sorted in descending order by default.D、The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.” 相关考题
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Evaluate the SQL statement:SELECT LPAD (salary,10,*)FROM EMPWHERE EMP _ ID = 1001;If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?()
A. 17000.00B. 17000*****C. ****170.00D. **17000.00E. an error statement
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Evaluate this SQL statement:In the statement, which capabilities of a SELECT statement are performed?()
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Evaluate the set of SQL statements:What is true about the set?()
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Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A、17000.00B、17000*****C、****170.00D、**17000.00E、an error statement
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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
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Evaluate the SQL statement: SELECT ROUND(TRUNC(MOD(1600,10),-1),2) FROM dual; What will be displayed?（）A、0B、1C、0.00D、An error statement
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Evaluate the SQL statement: SELECT LPAD (salary,10,*) FROM EMP WHERE EMP _ ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A、17000.00B、17000*****C、****170.00D、**17000.00E、an error statement
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单选题Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A
17000.00B
17000*****C
****170.00D
**17000.00E
an error statement
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The statement would not execute because table aliases are not allowed in the JOIN clause.B
The statement would not execute because the table alias prefix is not used in the USING clause.C
The statement would not execute because all the columns in the SELECT clause are not prefixed with table aliases.D
The statement would not execute because the column part of the USING clause cannot have a qualifier in the SELECT list.
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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.
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单选题Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A
17000.00B
17000*****C
****170.00D
**17000.00E
an error statement
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单选题Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEESORDER BY 2 DESC; What is true about them?（）A
The two statements produce identical results.B
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
考题
多选题Which two statements are true regarding the SQL Repair Advisor?（）AThe SQL Repair Advisor can be invoked to tune the performance of the regressed SQL statements.BThe SQL Repair Advisor can be invoked even when the incident is not active for a SQL statement crash.CThe SQL Repair Advisor is invoked by the Health Monitor when it encounters the problematic SQL statement.DThe DBA can invoke the SQL Repair Advisor when he or she receives an alert generated when a SQL statement crashes and an incident is created in the ADR.
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Difference, projection, joinC
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Intersection, projection, joinE
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单选题Evaluate the SQL statement: SELECT ROUND(TRUNC(MOD(1600,10),-1),2) FROM dual; What will be displayed?（）A
0B
1C
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单选题Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?（）A
The two statements produce identical results.B
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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单选题The PRODUCTS table has these columns: PRODUCT_ID NUMBER(4) PRODUCT_NAME VARCHAR2(45) PRICE NUMBER(8,2) Evaluate this SQL statement: SELECT * FROM PRODUCTS ORDER BY price, product _ name; What is true about the SQL statement? （）A
The results are not sorted.B
The results are sorted numerically.C
The results are sorted alphabetically.D
The results are sorted numerically and then alphabetically.
考题
单选题Evaluate the SQL statement: SELECT LPAD (salary,10,*) FROM EMP WHERE EMP _ ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A
17000.00B
17000*****C
****170.00D
**17000.00E
an error statement
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多选题Evaluate the SQL statement DROP TABLE DEPT: Which four statements are true of the SQL statement? （）AYou cannot roll back this statement.BAll pending transactions are committed.CAll views based on the DEPT table are deleted.DAll indexes based on the DEPT table are dropped.EAll data in the table is deleted, and the table structure is also deleted.FAll data in the table is deleted, but the structure of the table is retained.GAll synonyms based on the DEPT table are deleted.
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单选题Evaluate these two SQL statements: What is true about them?（）A
The two statements produce identical results.B
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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