SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 4) ExpressionList (children 4) Literal UInt64_7 Identifier name Identifier removal_tid Identifier removal_csn TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier system.parts Function and (children 1) ExpressionList (children 3) Function equals (children 1) ExpressionList (children 2) Identifier database Function currentDatabase (children 1) ExpressionList Function equals (children 1) ExpressionList (children 2) Identifier table Literal \'txn_counters\' Identifier active ExpressionList (children 1) OrderByElement (children 1) Identifier system.parts.name