SQL USE Database Statement
When working with databases, one of the first tasks is to select the right database to run queries on. SQL provides the USE statement to do this. Once a database is selected, all subsequent queries execute within its context especially useful when multiple databases exist on the same server.
Table of Contents
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Syntax
USE database_name;Examples
SHOW DATABASES; -- confirm it exists first
USE Hospital; -- now all queries target Hospital
USE College;
USE School;Key Points to Remember
- Database Context: After USE, every query runs in that database.
- Validation: Confirm existence with
SHOW DATABASES;first. - Uniqueness: The database name must be unique on the server.
- Oracle Exception: Oracle does not use USE the database is chosen at connection time.
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Conclusion
The USE statement is simple but essential for targeting the correct database before running queries. Always validate the database exists first. For more SQL tutorials, visit .
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