up::[[SQL]]
#s/informatique

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| symbol       | keyword    | why                                                                                                                  |
| ------------ | ---------- | -------------------------------------------------------------------------------------------------------------------- |
| $\equiv$     | `SELECT`   | you are listing things                                                                                               |
| $\leftarrow$ | `FROM`     |                                                                                                                      |
| $/$          | `WHERE`    | like maths's reduction to ... (eg: $f/_{x < 0}$ is $f$ reduced to when $x<0$), also like [[APL]]'s _selection_ : `/` |
| $\cup$       | `DISTINCT` |like [[APL]]'s _unique_, the union removes duplicates|
|$\subseteq$|`GOUP BY`|like [[APL]]'s _partition_ : grouping things depending on conditions|