How to Correctly Alias Tables in Oracle SQL?

Correct use of table aliases in Oracle SQL

When querying a table in Oracle SQL, you may encounter errors related to the "as" keyword used for table aliases. To resolve this error, it is important to understand the correct usage of table aliases in Oracle.

In Oracle SQL, it is not allowed to use the "as" keyword to create aliases for tables. Unlike other SQL servers such as MySQL or PostgreSQL, where using "as" for table aliasing is optional and Oracle considers it illegal syntax. Therefore, to avoid this error, the "as" keyword must be omitted when creating an alias for the table.

In the query provided, the following line caused the error:

<code class="language-sql">FROM Guest AS G</code>

To correct this, simply remove the "as" keyword:

<code class="language-sql">FROM Guest G</code>

This way, the query will execute successfully without encountering the "SQL command not properly ended" error.

Remember that in Oracle SQL, table aliasing is achieved by specifying the table name directly without using the "as" keyword. This ensures correct query execution and avoids potential syntax errors.

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