How do I update a column in MySQL without affecting other columns?

Updating a Column in MySQL

Updating a specific column in an existing table is a common task in database management. In this context, we explore a scenario where you have a table named "table1" with three columns ("key_col," "col_a," and "col_b") and intend to update the values in "col_a" while preserving those in "col_b."

To achieve this, you must utilize the UPDATE statement instead of INSERT. The UPDATE syntax is as follows:

UPDATE table_name SET column_name = new_value WHERE condition;

In your case, to update "col_a" with a set of values while leaving "col_b" unchanged, you would use the following commands:

UPDATE table1 SET col_a = 'k1' WHERE key_col = '1';
UPDATE table1 SET col_a = 'k2' WHERE key_col = '2';

By employing the UPDATE statement, you can selectively modify the values in a specific column without altering the data in other columns. This approach allows for efficient and precise database updates.

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