Check out example codes for "how ot change name of column mysql". It will help you in understanding the concepts better.

Code Example 1

alter table product change price price_kg float;

Code Example 2

ALTER TABLE your_table_name RENAME COLUMN original_column_name TO new_column_name;

Code Example 3

ALTER TABLE tableName CHANGE `oldcolname` `newcolname` datatype(length);

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