SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 4) ExpressionList (children 3) Identifier file_segment_range_begin Identifier file_segment_range_end Identifier size TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier system.filesystem_cache Function equals (children 1) ExpressionList (children 2) Identifier cache_name Literal \'02240_filesystem_query_cache\' ExpressionList (children 2) OrderByElement (children 1) Identifier file_segment_range_end OrderByElement (children 1) Identifier size