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EdmureTully
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If you rename an attribute or a relation with the keyword AS in MYSQL can you use the alias created outside the query where you renamed the attribute, also can you use the old name?
EdmureTully said:If you rename an attribute or a relation with the keyword AS in MYSQL can you use the alias created outside the query where you renamed the attribute, also can you use the old name?
Interesting, I never tried that. It is not possible.also can you use the old name?
An alias in MySQL is a temporary name given to a table or column in a query. It allows you to refer to the table or column by a different name, which can make the query easier to read and understand.
To use an alias in MySQL, you can use the AS keyword after the table or column name, followed by the desired alias. For example, "SELECT first_name AS name FROM users" will return the first name column with the alias "name". You can also use aliases in JOIN statements to refer to a specific table.
No, aliases in MySQL are not case-sensitive. This means that "name", "NAME", and "NaMe" would all be considered the same alias in a query.
Yes, you can use aliases for multiple columns in MySQL by separating them with commas. For example, "SELECT first_name AS name, last_name AS surname FROM users" would return the first name column with the alias "name" and the last name column with the alias "surname".
Yes, you can use old names with aliases in MySQL. This can be helpful if you have a legacy database with different column names, but you want to use more descriptive aliases in your queries. You can use the old name in the query, followed by the AS keyword and the desired alias.