The command that represents query in sql is
The query command in SQL is SELECT. It allows users to extract specific data from database tables, the syntax is: SELECT [column name | expression] FROM [table name] [WHERE filter condition] [ORDER BY sort condition].
The command that represents query in SQL: SELECT
In SQL, the command used to perform query operation is SELECT
. It allows users to extract specific data from database tables.
Syntax:
SELECT [列名|表达式] FROM [表名] [WHERE 筛选条件] [ORDER BY 排序条件]
Parameters:
- ##[Column name|Expression]: Column or expression to be returned.
- [Table name]: The table to be queried.
- [WHERE filter conditions]: Optional conditions for filtering results.
- [ORDER BY sorting condition]: Optional condition for sorting results.
Example:
Querycustomers All customer names in the table:
SELECT name FROM customers;
orders Orders with an amount greater than $100 in the table:
SELECT * FROM orders WHERE amount > 100;
products The top 5 products in the table sorted by price in descending order:
SELECT * FROM products ORDER BY price DESC LIMIT 5;
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