code: func newInsertStatement(
  	t WritableTable,
  	columns ...NonAliasColumn) InsertStatement {
  
  	return &insertStatementImpl{
  		table:   t,
  		columns: columns,
  		rows:    make([][]Expression, 0, 1),
  		onDuplicateKeyUpdates: make([]columnAssignment, 0, 0),
  	}
  }
docs: //
  // INSERT Statement ============================================================
  //