Contents
Is there a way to rename a table in MySQL?
Before we execute the RENAME TABLE statement, we must ensure that there is no active transactions or locked tables. Note that you cannot use the RENAME TABLE statement to rename a temporary table, but you can use the ALTER TABLE statement to rename a temporary table.
How to rename column name in ALTER TABLE?
Columns can be also be given new name with the use of ALTER TABLE. Syntax (Oracle): ALTER TABLE table_name RENAME COLUMN old_name TO new_name;
How to change the name of a table in SQL?
To change one or more tables, we use the RENAME TABLE statement as follows: RENAME TABLE old_table_name TO new_table_name; Code language: SQL (Structured Query Language) (sql) The old table (old_table_name) must exist, and the new table (new_table_name) must not.
What happens if you rename the departments table?
If we rename the departments table, all the foreign keys that point to the departments table will not be automatically updated. In such cases, we must drop and recreate the foreign keys manually. We delete a department with id 1, because of the foreign key constraint, all rows in the people table should be also deleted.
How to copy data from an existing table to a new table in MySQL?
The structure of the new table is defined by the result set of the SELECT statement. Then, MySQL populates data that comes from the SELECT statement to the new table. To copy partial data from an existing table to the new one, you use WHERE clause in the SELECT statement as follows:
How do you rename a table in Excel?
In case the table that you are going to rename is referenced by a stored procedure, you have to manually adjust it like you did with the view. First, rename the people table back to the employees table. Then, create a new stored procedure named get_employee that refers to the employees table.
What is the syntax for granting privileges in MySQL?
The syntax for granting privileges on a table in MySQL is: Ability to perform SELECT statements on the table. Ability to perform INSERT statements on the table. Ability to perform UPDATE statements on the table. Ability to perform DELETE statements on the table. Ability to create an index on an existing table.
When do you use alter table in MySQL?
ALTER TABLE is an essential command used to change the structure of a MySQL table. You can use it to add or delete columns, change the type of data within the columns, and even rename entire databases. The function that concerns us the most is how to utilize ALTER TABLE to rename a column.
Is there a way to rename a column in SQL?
ALTER TABLE RENAME is the existing syntax to rename the entire table. The RENAME COLUMN clause can only be used to rename a column. If you need additional functions, such as changing the data definition, or position of a column, you need to use the CHANGE clause instead. The CHANGE clause offers important additions to the renaming process.