Module Summary: Getting Started with SQL总结：基础 SQL

Congratulations! You have completed this lesson. At this point in the course, you know: 
恭喜！您已完成本课程。此时，您已经知道：

• The Data Manipulation Language (DML) statements read and modify data. 
  数据操作语言（DML）语句用于读取和修改数据。
• The search condition of the WHERE clause uses a predicate to refine the search.
  WHERE 子句的搜索条件使用谓词来细化搜索。
• The SQL retrieves specific data from databases.
  SQL 从数据库中检索特定数据。
• The COUNT, DISTINCT, and LIMIT are expressions used with SELECT statements. 
  COUNT、DISTINCT 和 LIMIT 是与 SELECT 语句一起使用的表达式。
• The real-world applications of SELECT statements.
  SELECT 语句的实际应用。
•  The INSERT, UPDATE, and DELETE are DML statements for populating and changing tables. 
  INSERT、UPDATE 和 DELETE 是用于填充和更改表的数据操作语言（DML）语句。