What is the command that expresses query in sql
May 01, 2024 pm 11:48 PMIn 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 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 <column_list> FROM <table_name> [WHERE <condition>] [GROUP BY <column_list>] [HAVING <condition>] [ORDER BY <column_list>]
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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