SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 1) Function greaterOrEquals (children 1) ExpressionList (children 2) Function count (children 1) ExpressionList Literal UInt64_100 TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 2) TableIdentifier sample_00276 SampleRatio 100