from github to this gitea

personnal SQL symbols.md

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+up::[[SQL]]
+#informatique
+
+----
+
+| 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|
+