How can I change the structure of a table in MySQL?

1 year ago
Olivia Parker
1 minute

To change the structure of a table, you can use the ALTER TABLE statement. Below are some common operations for modifying table structure.

  1. Add a new column:
  2. Add a new column with a specified data type to the table.
  3. Change the data type of the column.
  4. Change the data type of the column_name in the table_name.
  5. Change column name:
  6. Modify the table named “table_name” by changing the name and datatype of a column from “old_column_name” to “new_column_name” with the new datatype.
  7. Delete column.
  8. Remove the specified column from the table.
  9. Add a primary key:
  10. Add a primary key to the table by altering the table and specifying the column name.
  11. Add a foreign key:
  12. Add a foreign key constraint to the specified column in the table that references a column in a related table.

Before making any changes to the table, it is recommended to back up the data in case of unexpected events.

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