SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 1) Function toTypeName (children 1) ExpressionList (children 1) Identifier d32 TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) Function generateRandom (children 1) ExpressionList (children 1) Literal \'d32 Date32\' Literal UInt64_1