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SQL Arithmetic Overflow for Identity Insert

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问题 I have an error with arithmetic overflow inserting values into a lookup table with a row-id set as TINYINT datatype. This IS NOT a case where the number of unique records exceeds 255 values. This is a bit more unusual and did not occur during the first tests of this setup. The production version of the code below actually only has 66 unique values, but it is possible that new values could be added (slowly and in very small numbers) over time... 255 available slots should be more than enough

Remove duplicates column combinations from a dataframe in R

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问题 I want to remove duplicate combinations of sessionid, qf and qn from the following data sessionid qf qn city 1 9cf571c8faa67cad2aa9ff41f3a26e38 cat biddix fresno 2 e30f853d4e54604fd62858badb68113a caleb amos 3 2ad41134cc285bcc06892fd68a471cd7 daniel folkers 4 2ad41134cc285bcc06892fd68a471cd7 daniel folkers 5 63a5e839510a647c1ff3b8aed684c2a5 charles pierce flint 6 691df47f2df12f14f000f9a17d1cc40e j franz prescott+valley 7 691df47f2df12f14f000f9a17d1cc40e j franz prescott+valley 8

Remove duplicates column combinations from a dataframe in R

阅读更多关于 Remove duplicates column combinations from a dataframe in R

I want to remove duplicate combinations of sessionid, qf and qn from the following data sessionid qf qn city 1 9cf571c8faa67cad2aa9ff41f3a26e38 cat biddix fresno 2 e30f853d4e54604fd62858badb68113a caleb amos 3 2ad41134cc285bcc06892fd68a471cd7 daniel folkers 4 2ad41134cc285bcc06892fd68a471cd7 daniel folkers 5 63a5e839510a647c1ff3b8aed684c2a5 charles pierce flint 6 691df47f2df12f14f000f9a17d1cc40e j franz prescott+valley 7 691df47f2df12f14f000f9a17d1cc40e j franz prescott+valley 8 b3a1476aa37ae4b799495256324a8d3d carrie mascorro brea 9 bd9f1404b313415e7e7b8769376d2705 fred morales las+vegas 10