InsertQuery (children 2) Identifier bug_14144 SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 3) Function CAST (children 1) ExpressionList (children 2) Function toUUIDOrZero (children 1) ExpressionList (children 1) Literal \'2fc89389-4728-4b30-9e51-b5bc3ad215f6\' Literal \'Nullable(UUID)\' Identifier number Literal \'missing\' TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) Function numbers (children 1) ExpressionList (children 1) Literal UInt64_1000