We can use ALTER TABLE ALTER COLUMN statement to change the datatype of the column.Sep 22, 2021
ALTER TABLE table_name RENAME TO new_table_name; Columns can be also be given new name with the use of ALTER TABLE.Mar 22, 2021
If more than one column is listed, column names must be separated by commas.
The drop table command is used to delete a table and all rows in the table. To delete an entire table including all of its rows, issue the drop table command followed by the tablename.
The ALTER TABLE statement is used to add, delete, or modify columns in an existing table. The ALTER TABLE statement is also used to add and drop various constraints on an existing table.
Any database user can easily change the name by using the RENAME TABLE and ALTER TABLE statement in Structured Query Language. The RENAME TABLE and ALTER TABLE syntax help in changing the name of the table.
The column list must be enclosed in parentheses ( ). Default values cannot be assigned to all columns in a table. A column name can consist of up to 225 characters.
TRUNCATE TABLELogically, TRUNCATE TABLE is similar to the DELETE statement with no WHERE clause. The TRUNCATE TABLE statement removes all the rows from a table, but the table structure and its columns, constraints, indexes, and so on remain intact.
Which of the following commands can be used to make structural changes to an existing table? The ALTER TABLE name can be used to rename a table.
truncate commandThe truncate command removes all rows of a table.Jul 8, 2019
rm command is used for removing files.Aug 16, 2018
Solution. Drop database database_name command is used to delete a database.
To delete an entire table, use the ____ command and then re-create the table.
When a script file contains more than one command, each command must end with a (n) ____.