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Not all programming languages have this amount of expressiveness. How do you, for example, tell how a database what the intended execution plan is for some comp

Not all programming languages have this amount of expressiveness. How do you, for example, tell how a database what the intended execution plan is for some complicated SQL query? You can normally only send SQL queries to a database and not execution plans.

Spivak 2y ago
I've always wanted to just write the execution plan directly and bypass the planner for a few hot queries.
magicalhippo 2y ago
Using bit rotation instructions in C is another case I recall. Since there's no bit rotate operator in C, you're left hoping the compiler recognizes what the shifts and bitwise-ands are trying to do.
- account42 2y ago
  Inline assembly or platform intrinsics is the other option.
  - ablob 2y ago
    Both of which aren't portable, however.
- dzaima 2y ago
  clang does have __builtin_rotateleft32 & co. gcc doesn't though. (but of course for both of those just doing the manual rotate should be fine like always)