	{
	type: 'create-table'
	, table: 'usersGroups'
	, ifNotExists: true
	, definition: {
	id: {
	type: 'serial'
	, primaryKey: true
	}

	, uid: {
	type: 'int'
	, references: {
	table: 'users'
	, column: 'id'
	}
	}

	, gid: {
	type: 'int'
	, references: {
	table: 'groups'
	, column: 'id'
	, onDelete: 'cascade'
	}
	}

	, createdAt: {
	type: 'timestamp'
	}
	}
	}

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