Modify a column definition

sql

ALTER TABLE users MODIFY COLUMN phone VARCHAR(100) NULL;

Explanation

Use `MODIFY COLUMN` when you are changing the definition but not renaming the column.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing create and alter tables

Add a nullable column to an existing table.

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Rename a column while specifying its full definition.

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Remove a column from a table.

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Create a schema if it does not already exist.

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Create a table with an auto-increment primary key and timestamps.

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Rename a table without recreating it.

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