1Z0-007章節(jié)練習(xí)(2019.11.21)

You need to create a table named ORDERS that contains four columns:
1.an ORDER_ID column of number data type
2.a CUSTOMER_ID column of number data type
3.an ORDER_STATUS column that contains a character data type
4.a DATE_ORDERED column to contain the date the order was placed
When a row is inserted into the table, if no value is provided for the status of the order, the value PENDING should be used instead.
Which statement accomplishes this?（）

You need to create a table named ORDERS that contain four columns:
1. an ORDER_ID column of number data type
2. aCUSTOMER_ID column of number data type
3. an ORDER_STATUS column that contains a character data type
4. aDATE_ORDERED column to contain the date the order was placed.
When a row is inserted into the table, if no value is provided when the order was placed, today's date should be used instead.
Which statement accomplishes this? （）

The EMPLOYEES table contains these columns:
EMPLOYEE_ID NUMBER(4)
ENAME VARCHAR2 (25)
JOB_ID VARCHAR2(10)
Which SQL statement will return the ENAME, length of the ENAME, and the numeric position of the
letter "a" in the ENAME column, for those employees whose ENAME ends with a the letter "n"?（）