SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 2) Function count (alias value) (children 1) ExpressionList (children 1) Asterisk Literal UInt64_0 (alias data) TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier test ExpressionList (children 1) Identifier data