vertica

This is an old problem - looking for the best solution in Vertica. Imagine a table with columns:- A, B, C, D, E Columns A-D are ints or varchars and column E is a timestamptz column that has a default value of GETUTCDATE(). Sample content of the table:- 1, 2, "AAA", 4, 1404305559 1, 2, "BBB", 23, 1404305633 1, 2, "CCC", 62, 1404305705 <-- the max entry for (1,2,"CCC") 1, 2, "AAA", 123, 1404305740 <-- the max entry for (1,2,"AAA") 1, 2, "BBB", 91, 1404305778 <-- the max entry for (1,2,"BBB") So potentially there are repeating rows for the composite (A,B,C) value (with column D being a value and

Is there any way I can store the last iterated row result and use that for next row iteration? For example I have a table say( Time_Table ). __ Key type timeStamp 1 ) 1 B 2015-06-28 09:00:00 2 ) 1 B 2015-06-28 10:00:00 3 ) 1 C 2015-06-28 11:00:00 4 ) 1 A 2015-06-28 12:00:00 5 ) 1 B 2015-06-28 13:00:00 Now suppose I have an exceptionTime of 90 minutes which is constant. If I start checking my Time_Table then: for the first row, as there is no row before 09:00:00, it will directly put this record into my target table. Now my reference point is at 9:00:00. For the second row at 10:00:00, the last

Was wondering whether it's possible to accomplish the following in one insert statement? drop table analytics.bw_covariance_matrix; create table analytics.bw_covariance_matrix ( row int, x1 float, x2 float, x3 float ); insert into analytics.bw_covariance_matrix VALUES (1, 4.01926965, -0.4686067, -0.07592112), insert into analytics.bw_covariance_matrix VALUES (2, -0.46860675, 4.1799267, -0.82461139); insert into analytics.bw_covariance_matrix VALUES (3, -0.07592112, -0.8246114, 4.37186211); You could UNION a SELECT to have a single INSERT statement: insert into analytics.bw_covariance_matrix

There is a table with visits data: uid (INT) | created_at (DATETIME) I want to find how many days in a row a user has visited our app. So for instance: SELECT DISTINCT DATE(created_at) AS d FROM visits WHERE uid = 123 will return: d ------------ 2012-04-28 2012-04-29 2012-04-30 2012-05-03 2012-05-04 There are 5 records and two intervals - 3 days (28 - 30 Apr) and 2 days (3 - 4 May). My question is how to find the maximum number of days that a user has visited the app in a row (3 days in the example). Tried to find a suitable function in the SQL docs, but with no success. Am I missing something