The statement used for data retrieval in SQL is the SELECT statement, and its syntax is: SELECT [column name list]FROM [table name][WHERE condition][GROUP BY grouping column][ORDER BY sorting column][ LIMIT number of rows]
Statements used for data retrieval in SQL
SELECT statement
The SELECT statement is the basic statement in SQL used to retrieve data in the database. It is written in the following syntax:
<code>SELECT [列名列表] FROM [表名] [WHERE 条件] [GROUP BY 分组列] [ORDER BY 排序列] [LIMIT 行数]</code>
Syntax details:
- List of column names: The columns to be retrieved.
- Table name: The table to retrieve data from.
- WHERE condition: Filter the conditions to retrieve data.
- GROUP BY grouping column: Group data.
- ORDER BY sort column: Sort the retrieved data.
- LIMIT Number of rows: Limit the number of rows to be retrieved.
How to use the SELECT statement
For example, to retrieve the names and emails of all customers from the "Customers" table, you would use the following statement:
<code>SELECT Name, Email FROM Customers;</code>
Example:
The following example illustrates how to use the SELECT statement to retrieve data:
<code>SELECT * FROM Products WHERE Price > 100;</code>
This statement will retrieve detailed information for all products with a price greater than 100.
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