SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 1) Function dateDiff (children 1) ExpressionList (children 3) Literal \'minute\' Function toDateTime64 (children 1) ExpressionList (children 3) Literal \'1927-01-01 00:00:00\' Literal UInt64_6 Literal \'UTC\' Function toDateTime64 (children 1) ExpressionList (children 3) Literal \'1927-01-01 00:10:00\' Literal UInt64_3 Literal \'UTC\'