![]() Name of the table to add a NOT NULL constraint to. If null values exist and if defaultNullValue is not set, the change will fail. The value for which you can set all values that currently equal null in a column. Name of the constraint to add (if database supports names for NOT NULL constraints) Name of the column for which to add the constraint. To help make scripts database-independent, Liquibase automatically converts the following generic data types to the correct database implementation: BIGINT, BLOB, BOOLEAN, CHAR, CLOB, CURRENCY, DATE, DATETIME, DECIMAL, DOUBLE, FLOAT, INT, MEDIUMINT, NCHAR, NUMBER, NVARCHAR, SMALLINT, TIME, TIMESTAMP, TINYINT, UUID, VARCHAR, XML.Īlso, specifying a .* type is converted to the correct type as well. Deploy your changeset by running the update command: liquibase update.Add the addNotNullConstraint Change Type to your changeset with the needed attributes as it is shown in the examples.To add a NOT NULL constraint to your table, follow these steps: Running the addNotNullConstraint Change Type If null values exist in your database, and if you don’t not use a defaultNullValue attribute, the change will fail. ![]() If a defaultNullValue attribute is passed, all null values for the column will be updated to the passed value before the constraint is applied. The addNotNullConstraint Change Type enforces a column to always contain a value and not to accept NULL values so that you cannot insert or update a record without adding a value to the column containing this constraint. You can typically use the addNotNullConstraint Change Type when you want to apply a NOT NULL constraint value to a specific table instead of having nullable columns in that table. The addNotNullConstraint Change Type adds a NOT NULL constraint to an existing table. ![]()
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