数据库基础知识
SQL 语句的基本语法与操作
多选 第 1 题 : 以下是一道关于 MySQL 8 基本语法与操作的多选题：
Which of the following statements are true about the SELECT statement in MySQL 8?
A. The SELECT statement is used to retrieve data from one or more tables
B. The WHERE clause can be used to filter the results returned by the SELECT statement
C. The GROUP BY clause can be used to group the results returned by the SELECT statement
D. The ORDER BY clause can be used to sort the results returned by the SELECT statement
E. The UPDATE statement can be used instead of the SELECT statement to retrieve data from t
ables
Answer: A, B, C, D
Explanation:
A. The SELECT statement is used to retrieve data from one or more tables
B. The WHERE clause can be used to filter the results returned by the SELECT statement
C. The GROUP BY clause can be used to group the results returned by the SELECT statement
D. The ORDER BY clause can be used to sort the results returned by the SELECT statement
E. The UPDATE statement is used to modify existing data in tables, not to retrieve data.
The SELECT statement is a fundamental component of SQL and is used to retrieve data from on
e or more tables. The WHERE, GROUP BY, and ORDER BY clauses can be used in conjunction with
the SELECT statement to filter, group, and sort the results returned by the query. The UPD
ATE statement, on the other hand, is used to modify existing data in tables, not to retriev
e data.
