Which command is used for data retrieval in sql

The command used for data retrieval in SQL is the SELECT command, which allows the user to select specific data from a table. Syntax: SELECT column1, column2, ..., columnN FROM table_name [WHERE condition] [ORDER BY column_name [ASC | DESC]] [LIMIT row_count].

Commands used for data retrieval in SQL

The SELECT command is the basic command used for data retrieval in SQL . It allows users to select specific rows and columns of data from a database table.

Syntax

<code>SELECT column1, column2, ..., columnN
FROM table_name
[WHERE condition]
[ORDER BY column_name [ASC | DESC]]
[LIMIT row_count]</code>

Parameters

• ##column1, column2, ..., columnN:The column name to be retrieved.
• table_name: The name of the table to retrieve data.
• WHERE condition: (Optional) Condition for retrieving specific row data.
• ORDER BY column_name: (Optional) Sorts results based on a specific column. You can specify ASC (ascending order) or DESC (descending order).
• LIMIT row_count: (Optional) Limit the number of rows retrieved.

Example

<code>SELECT name, email
FROM customers
WHERE city = 'London'
ORDER BY name ASC
LIMIT 10;</code>

Other Notes

The SELECT command can retrieve data from a single table or multiple tables.
• You can use the wildcard character
• * to retrieve data for all columns, such as SELECT * FROM table_name;.
Aggregation functions (such as
• SUM(), COUNT(), AVG()) can be used to summarize data.

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