Timeline for Why isn't this awk command doing a full outer join?
Current License: CC BY-SA 3.0
4 events
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| Feb 8, 2020 at 13:58 | comment | added | Paul_Pedant | This is just wrong. The smaller file needs to fit in memory as an array (hash table) to overcome the ordering problem. The larger file is processed serially, record by record. In extreme conditions, it would be a trivial improvement to split the smaller file into, say 1GB sections, and make multiple passes over the larger file. The first pass might need to be "special" to restructure the input columns to the "joined" format, and place default values in columns where the first pass did not contain the required update data. | |
| Apr 28, 2015 at 19:23 | history | edited | cuonglm | CC BY-SA 3.0 |
added 1 character in body
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| Apr 8, 2015 at 6:10 | vote | accept | Murali Rao | ||
| Apr 8, 2015 at 3:47 | history | answered | cuonglm | CC BY-SA 3.0 |