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T-SQL Issue using lead or lag


T-SQL Issue using lead or lag

By : animate8
Date : November 20 2020, 07:00 PM
wish helps you I think you want to use f.TIMESTAMP as your ORDER BY for the LEAD(). I think your query should look something more like this:
code :
SELECT  
    f.EVENT_ACTION ,
    (f.TIMESTAMP) AS starttime, 
    LEAD(f.TIMESTAMP) OVER (ORDER BY f.TIMESTAMP ASC) AS endtime 
FROM  
    dbo.flext f 
WHERE 
    EVENT_ACTION IN (225,226) 
ORDER BY MRDF, EVENT_ACTION 
LEAD ( scalar_expression [ ,offset ] , [ default ] ) 
LEAD(f.TIMESTAMP, 1, GETDATE()) OVER (ORDER BY f.TIMESTAMP ASC) AS endtime


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firefox lead dot in cookie issue

firefox lead dot in cookie issue


By : Martin Rønn Bundgaar
Date : March 29 2020, 07:55 AM
Is casting could lead to a issue?

Is casting could lead to a issue?


By : Austin Delmond
Date : March 29 2020, 07:55 AM
it fixes the issue I'm not a C++ expert, but what you've described does not make any sense. Casting from an 8-bit type to a 16-bit type cannot result in uninitialized memory being incorporated into to the value--upcasts of this type have narrow, strictly-specified semantics, and the compiler can't just grab an extra adjacent byte and add it to your value.
What you're describing sounds like a buffer overflow from some other part of the program. I suggest using a validation tool like valgrind (Linux) or AppVerifier (Windows) to check your memory accesses and find the buffer overflow at its source.
Could MPI_Bcast lead to the issue of data uncertainty?

Could MPI_Bcast lead to the issue of data uncertainty?


By : levins
Date : March 29 2020, 07:55 AM
should help you out I think you don't understand the MPI_Bcast function well. Actually MPI_Bcast is a kind of MPI collective communication method in which every process that belongs to a certain communicator need to get involve. So for the function of MPI_Bcast, not only the process who sends the data to be broadcasted, but also the processes who receive the broadcasted data need to call the function synchronously in order to achieve the goal of data broadcasting among all participating processes.
In your given program, especially this part:
code :
if (rank == 0)
{
   x = 0;
   MPI_Bcast(&x, 1, MPI_INT, 0, MPI_COMM_WORLD);
}
else if (rank==1)
{
  x = 1;
  MPI_Bcast(&x, 1, MPI_INT, 1, MPI_COMM_WORLD);
}
PostgreSQL lead() issue with camelCase column

PostgreSQL lead() issue with camelCase column


By : user5411531
Date : March 29 2020, 07:55 AM
seems to work fine You did not "remove the double quotes from lead()". The error message reveals that you actually removed the double quotes from "clockInTime":
code :
error: column "clockintime" does not exist
SELECT *
FROM   "timeCard"
WHERE  "employeeId" = 555
AND    "clockInTime" BETWEEN 1462797450 AND 1462883850

UNION ALL
(  -- parentheses required
SELECT *
FROM   "timeCard"
WHERE  "employeeId" = 555
AND    "clockInTime" > 1462883850
ORDER  BY "clockInTime"
LIMIT  1
);
(
SELECT *
FROM   "timeCard"
WHERE  "employeeId" = 555
AND    "clockInTime" BETWEEN 1462797450 AND 1462883850
ORDER  BY "clockInTime"
)
UNION ALL
(
SELECT *
FROM   "timeCard"
WHERE  "employeeId" = 555
AND    "clockInTime" > 1462883850
ORDER  BY "clockInTime"
LIMIT  1
);
Why this issue could lead to a CSRF problem?

Why this issue could lead to a CSRF problem?


By : Aaron Annuscheit
Date : March 29 2020, 07:55 AM
To fix this issue Your reasoning assumes that your users have good password habits. In reality, most users don't. They will have the same password in multiple places, including your website.
This means a CSRF attacker could know their password from an unrelated data breach, or by having a service harvesting passwords for them (i.e. a free image sharing service logging passwords in plaintext, for malicious purposes).
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