CreateQuery mview (children 4)
 Identifier mview
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration day (children 1)
    DataType Date
   ColumnDeclaration card_id (children 1)
    DataType UInt64
   ColumnDeclaration card_view (children 1)
    DataType Int64
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 3)
     Function toDate (alias day) (children 1)
      ExpressionList (children 1)
       Identifier timestamp
     Identifier card_id
     Function count (alias card_view) (children 1)
      ExpressionList (children 1)
       Asterisk
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier source
    ExpressionList (children 1)
     Function tuple (children 1)
      ExpressionList (children 2)
       Identifier day
       Identifier card_id
 ViewTargets (children 1)
  Storage definition (children 2)
   Function SummingMergeTree
   Function tuple (children 1)
    ExpressionList (children 2)
     Identifier day
     Identifier card_id
