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