SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 1) Function count (children 1) ExpressionList TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier uuid Function less (children 1) ExpressionList (children 2) Identifier id Literal \'00000000-0000-03f8-9cb8-cb1b82fb3900\'