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What is the command that expresses query in sql

May 01, 2024 pm 11:48 PM

In SQL, the command to execute a query is SELECT. The syntax of the SELECT statement contains the following components: 1. SELECT <column_list>: specifies the column to be retrieved; 2. FROM <table_name>: specifies the table to retrieve data; 3. [WHERE <condition>]: filters the query results rows; 4. [GROUP BY <column_list>]: Group the results; 5. [HAVING <condition>]: Filter the grouped results; 6. [ORDER

What is the command that expresses query in sql

What is the command that represents query in SQL?

In SQL, the command used to execute a query is SELECT.

The syntax of the SELECT statement is as follows:

SELECT &lt;column_list&gt;
FROM &lt;table_name&gt;
[WHERE &lt;condition&gt;]
[GROUP BY &lt;column_list&gt;]
[HAVING &lt;condition&gt;]
[ORDER BY &lt;column_list&gt;]
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The components of the SELECT statement:

  • SELECT <column_list>: Specify the columns to be retrieved from the table.
  • FROM <table_name>: Specifies the table from which to retrieve data.
  • WHERE <condition>: (Optional) Specifies the rows on which to filter the query results.
  • GROUP BY <column_list>: (Optional) Specifies the column used to group the results.
  • HAVING <condition>: (optional) Specifies the conditions for filtering grouped results.
  • ORDER BY <column_list>: (Optional) Specifies the column used to sort the results.

Example:

The following SQL statement can retrieve the names and ages of all students from the "students" table:

SELECT name, age
FROM students;
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