Which of the following SQL commands lists the contents of a table named EMPLOYEE? LIST * FROM EMPLOYEE DISPLAY * FROM EMPLOYEE SELECT ALL FROM EMPLOYEE SELECT * FROM EMPLOYEE
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Which of the following SQL commands lists the contents of a table named EMPLOYEE?
LIST * FROM EMPLOYEE
DISPLAY * FROM EMPLOYEE
SELECT ALL FROM EMPLOYEE
SELECT * FROM EMPLOYEE
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- Which of the following symbols is used in a SELECT clause to display all columns from a table? / & * "Which of the following SELECT statements displays a list of customer names from the CUSTOMERS table? SELECT customer names FROM customers; SELECT “Names” FROM customers; SELECT firstname, lastname FROM customers; SELECT firstname, lastname, FROM customers; SELECT firstname, lastname, “Customer Names” FROM customers;Which of the following lines of the SELECT statement contains an error? 1 SELECT * 2 FROM publishers; line 1 line 2 There are no errors.
- Which of the following statements is correct? A table can contain a maximum of only one column marked as unused. You can delete a table by removing all columns in the table. Using the SET UNUSED clause allows you to free up storage space used by a column. None of the above statements are correct.Which of the following is not a valid SQL statement? CREATE TABLE anothernewtable (newtableid VARCHAR2 (2)); CREATE TABLE anothernewtable (date, anotherdate) AS (SELECT orderdate, shipdate FROM orders); CREATE TABLE anothernewtable (firstdate, seconddate) AS (SELECT orderdate, shipdate FROM orders); All of the above are valid statements.Which of the following characters can be used in a table name? a. b. ( c. % d. !
- Which of the following lines of the SELECT statement contains an error? 1 SELECT name, contact, 2 "Person to Call", phone 3 FROM publisher; line 1 line 2 line 3 There are no errors.Which of the following is not a valid SELECT statement? SELECT lastname, firstname FROM customers; SELECT * FROM orders; Select FirstName NAME from CUSTOMERS; SELECT lastname Last Name FROM customers;Which of the following is a valid SQL statement? SELECT * WHERE amid = ‘J100’ FOR UPDATE; INSERT INTO homeworkl0 VALUES (SELECT * FROM acctmanager); DELETE amid FROM acctmanager; rollback; all of the above
- Which of the following is not a correct statement? A table can be modified only if it doesn’t contain any rows of data. The maximum number of characters in a table name is 30. You can add more than one column at a time to a table. You can’t recover data contained in a table that has been truncated.Which of the following is a correct statement? You can restore the data deleted with the DROP COLUMN clause, but not the data deleted with the SET UNUSED clause. You can’t create empty tables—all tables must contain at least three rows of data. A table can contain a maximum of 1000 columns. The maximum length of a table name is 265 characters.
