A structure specified as parameter ':var' is expanded into its individual components. This is useful, e.g., in the into clause of the select statement. Data is passed in the order of component declarations. The mapping to table columns described here may only be applied to arrays if the precompiler option comp is specified. Compare section <array statement>. For component arrays with several dimensions, the last dimension is run through first. Thereby the indicator variables needed can also be specified as array or structure which must contain at least as many components as the host variable.