Retrieves data from a database In Sql basic data retrieval and manipulation involve querying and modifying data stored in SQL Server databases. These tasks include selecting data with the SELECT statement and updating or deleting records using UPDATE and DELETE commands. Understanding these core concepts is crucial for efficient database management and analysis.
SELECT – Retrieves data from a database.
SELECT column1, column2 FROM table_name;
INSERT – Inserts new data into a database.
INSERT INTO table_name (column1, column2)
VALUES (value1, value2);
UPDATE – Updates existing data in a database.
UPDATE table_name
SET column1 = value1,
column2 = value2
WHERE condition;
DELETE – Deletes data from a database
DELETE FROM table_name WHERE condition;
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