down() public method This method contains the logic to

getDb() protected method (available since version 2.0.6)

execute() public method Executes a SQL statement.

dropCommentFromTable() public method (available since version 2.0.8)

alterColumn() public method Builds and executes a SQL

dropTable() public method Builds and executes a SQL statement

dropIndex() public method Builds and executes a SQL statement

init() public method Initializes the migration.

createIndex() public method Builds and executes a SQL

delete() public method Creates and executes a DELETE SQL