Assume the user has just connected to the MySQL server.What is the result of the query SELECT @ a?
Posted: Sun Jun 11, 2023 4:01 pm
Assume the user has just connected to the MySQL server.What is the result of the query SELECT @ a?
A. An error that @ a is undefined
B. A single NULL
C. An empty string
D. The value of GLOBAL variable @ a
A. An error that @ a is undefined
B. A single NULL
C. An empty string
D. The value of GLOBAL variable @ a