Timeline for Select unique values for one column
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Jan 26, 2018 at 22:18 | comment | added | ypercubeᵀᴹ |
@McNets because otherwise there might be two identical rows, say with ('b', 4). On one hand I wouldn't know what the expected output would be in this case and on the other hand a table without a primary or an unique key is not really a table (at least in relational theory ;)
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| Jan 26, 2018 at 19:35 | comment | added | McNets | Why a primary key is required? | |
| Jan 26, 2018 at 19:33 | history | edited | McNets | CC BY-SA 3.0 |
added 23 characters in body
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| Jan 26, 2018 at 18:44 | history | answered | ypercubeᵀᴹ | CC BY-SA 3.0 |