# Variables
ChatDbsColumns holds the columns for the "chat_dbs" table.
ChatDbsTable holds the schema information for the "chat_dbs" table.
Tables holds all the tables in the schema.
WithDropColumn sets the drop column option to the migration.
WithDropIndex sets the drop index option to the migration.
WithForeignKeys enables creating foreign-key in schema DDL.
WithGlobalUniqueID sets the universal ids options to the migration.