Teradata Scenario

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When DML_OPeration is Insert "I" then B=0 When DML_OPeration is Delete "D" then B will hold the value of A of inserted record

Condition :-

  1. if COUNT OF 'I' = Count of 'D', then we don't need those records. for example : ID=111
  2. Find latest insert('I') DML_operation
    ID  A   B   DML_Operation
1   111 1   0   I
2   111 2   1   D
3   111 3   0   I
4   111 4   3   D
5   111 5   0   I
6   111 6   5   D
7   111 7   0   I
8   222 8   0   I
9   333 9   0   I
10  333 10  9   D
11  444 11  0   I
12  444 12  11  D
13  444 13  0   I
14  111 14  7   D
15  333 15  0   I
16  444 16  0   I
17  444 17  13  D

Desire Output

ID  A   B   DML_Operation
222 8   0   I
333 15  0   I
444 16  0   I

My logic which is not working

sel ID, Max(A) from xyz
group by ID
having count(c='I') <> COUNT(c='D')

does you find like below

    select ID, Max(A) from xyz
    group by ID
    having sum(case when c='I' then 1 else 0 end) <> sum(case when c='D' then 1 else 0 end)

17.00 - Scenario 2, Table Structure and Update Schedule, Query Workload, and Problem Statement This case study is a continuation of the scenario presented in Scenario 1. yet been sent to the Teradata Database is less than or equal to the total number of Set the number of cells above the average, but below the peak. Average and peak are functions of the configuration and the workload. running five FastLoad jobs and several BulkLoad jobs on a Teradata Database with eight

How about using case?

select ID, Max(A)
from xyz
group by ID
having sum( case when c = 'I' then 1 else 0 end) <> sum(case when c = 'D' then 1 else 0 end)


having sum(case when c = 'I' then 1
                when c = 'D' then -1
                else 0
           end) <> 0

16.10 - Scenario 1, Current transactions are loaded into the table nightly using Teradata Parallel Transporter. Most transactions are The DBA then sets up tests for both scenarios. Teradata Database supports storage and manipulations that involve durations, spans of time defined by a beginning and ending bounds: By info-eng-team-td , 03 Oct 2013 | Tagged: scenario period data type period derived period v_database

This will find all 'I' rows without matching 'D' row:

FROM mytab AS t1
WHERE DML_Operation = 'I'
   FROM mytab AS t2
   WHERE t2.id = t1.id
     AND t2.b = t1.a 
     AND DML_Operation = 'D'

Teradata Interview Scenarios Part 1, Use this. But it will not give you R1 for all the rows. select m.CustNo,t.Rule, case when t.Amt is null then 0 else t.Amt end as Rule ,m.Date from� Bulls will argue that Teradata’s fundamental weakness is simply the temporary result of the firm’s transition from a perpetual software license and hardware business model to a recurring revenue,

▷ Top 89 Teradata Interview Questions & Answers [UPDATED 2020], This scenario describes a Job that creates a new Teradata database table, writes data into a delimited file, then loads the data from the file into this table, and� In a real-world scenario, you will have multiple databases in your SQL Schema. In order to perform any kind of operations on the database, you need to select the database first.   The SQL USE statement is used to select any …

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  • How do you define latest insert, is there a column to order by?
  • yup... Column A
  • I want to extract (select *) instead of 2 columns... Can you please suggest