id_spreadsheet = par_id;
__CREATE_QUERY( "
DELETE FROM co_sys_expression
WHERE id_spreadsheet=%d AND id_column=%d ;
DELETE FROM co_sys_expression_cell
WHERE id_spreadsheet=%d AND id_column=%d ;
DELETE FROM co_sys_expression_range
WHERE id_spreadsheet=%d AND id_column=%d ;
",
id_spreadsheet,id_column,
id_spreadsheet,id_column,
id_spreadsheet,id_column)

__SQL_EXEC

{
const char* class_names[] = {"spreadsheet","spreadsheet_column","spreadsheet_row",NULL};
int object_ids[] = {id_spreadsheet,id_column,0};

cou_queueActionX( cnx, "expression", class_names, object_ids,
CO_OP_DELETE, NULL );
}