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NEW QUESTION 38
You must write a statement that combines the first_name and last_name columns from the employees table as "last_name, first_name." Which two statements will do this?

A. SELECT GROUP_CONCAT(last_name, first_name) FROM employees;B. SELECT CONCAT_WS(', ',last_name,first_name) FROM employees;C. SELECT last_name + ', ' + first_name FROM employees;D. SELECT CONCAT(last name,', ',first_name) FROM employees;E. SELECT last_name, ' , ',first_name FROM employees;

Answer: A,C

 

NEW QUESTION 39
Examine this table definition:

The table must always remain a valid document store collection. What restriction does this impose on any added column?

A. The column must be a generated column referencing any attribute of doc.B. The column must be indexed.C. The column must have a default value.D. The column must be used in a unique constraint.E. The column must be a generated column referencing only an existing attribute of doc.

Answer: A

 

NEW QUESTION 40
Examine the output:

Which explain command will obtain the output?

A. EXPLAIN FORMAT=TREEB. EXPLAIN ANALYZEC. EXPLAIN PARTITIONSD. EXPLAIN PORMAT=JSONE. EXPLAIN PORMAT^TRADITIONAL

Answer: C

 

NEW QUESTION 41
Examine the Test.php script which is numbered for clarity, and its output:

PHP Fatal error: Uncaught Error: call to underined function mysqli_connect () in Test.php:2 Which action will fix this error?

A. Replace line 2 With: Slink = mysql_xdevapi\getSession
("mysqlx://username:password@localhost:3306","schema");B. Enable the mysqli extension in the php.ini file.C. Install the PHP executable in the path used by the MySQL installation.D. Replace line 2 with Slink = mysql.connect {"localhost: 3306n, "username", "pas "schema") ;

Answer: B

 

NEW QUESTION 42
......

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