chore(libquery): remove dmmf

[jkomyno]

This PR removes the dmmf method from the libquery query engine.
Context: during a conversation with @SevInf on Slack, it turned out that this dmmf method was never called by @prisma/client.

/integration

[github-actions]

WASM Query Engine file Size

Engine	This PR	Base branch	Diff
Postgres	2.153MiB	2.153MiB	0.000B
Postgres (gzip)	846.111KiB	846.112KiB	-1.000B
Mysql	2.121MiB	2.121MiB	0.000B
Mysql (gzip)	832.563KiB	832.565KiB	-2.000B
Sqlite	2.015MiB	2.015MiB	0.000B
Sqlite (gzip)	793.470KiB	793.469KiB	1.000B

[codspeed-hq]

CodSpeed Performance Report

Merging #4790 will not alter performance

_{Comparing feat/qe-remove-dmmf (05d5d2d) with main (079da82)}

Summary

✅ 11 untouched benchmarks

[github-actions]

✅ WASM query-engine performance won't change substantially (1.007x)

Full benchmark report

DATABASE_URL="postgresql://postgres:postgres@localhost:5432/bench?schema=imdb_bench&sslmode=disable" \
node --experimental-wasm-modules query-engine/driver-adapters/executor/dist/bench.mjs
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cpu: AMD EPYC 7763 64-Core Processor
runtime: node v18.20.2 (x64-linux)

benchmark                   time (avg)             (min … max)       p75       p99      p999
-------------------------------------------------------------- -----------------------------
• movies.findMany() (all - ~50K)
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline     374 ms/iter       (370 ms … 395 ms)    373 ms    395 ms    395 ms
Web Assembly: Latest       459 ms/iter       (455 ms … 468 ms)    463 ms    468 ms    468 ms
Web Assembly: Current      459 ms/iter       (456 ms … 463 ms)    462 ms    463 ms    463 ms
Node API: Current          202 ms/iter       (197 ms … 209 ms)    208 ms    209 ms    209 ms

summary for movies.findMany() (all - ~50K)
  Web Assembly: Current
   2.27x slower than Node API: Current
   1.23x slower than Web Assembly: Baseline
   1x faster than Web Assembly: Latest

• movies.findMany({ take: 2000 })
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline  15'032 µs/iter (14'765 µs … 15'727 µs) 15'098 µs 15'727 µs 15'727 µs
Web Assembly: Latest    18'674 µs/iter (18'459 µs … 19'098 µs) 18'709 µs 19'098 µs 19'098 µs
Web Assembly: Current   18'841 µs/iter (18'463 µs … 19'899 µs) 18'881 µs 19'899 µs 19'899 µs
Node API: Current        8'279 µs/iter   (8'035 µs … 8'923 µs)  8'345 µs  8'923 µs  8'923 µs

summary for movies.findMany({ take: 2000 })
  Web Assembly: Current
   2.28x slower than Node API: Current
   1.25x slower than Web Assembly: Baseline
   1.01x slower than Web Assembly: Latest

• movies.findMany({ where: {...}, take: 2000 })
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline   2'349 µs/iter   (2'182 µs … 4'041 µs)  2'316 µs  3'719 µs  4'041 µs
Web Assembly: Latest     2'922 µs/iter   (2'793 µs … 5'229 µs)  2'884 µs  3'816 µs  5'229 µs
Web Assembly: Current    2'944 µs/iter   (2'799 µs … 4'678 µs)  2'892 µs  4'566 µs  4'678 µs
Node API: Current        1'428 µs/iter   (1'325 µs … 1'909 µs)  1'433 µs  1'830 µs  1'909 µs

summary for movies.findMany({ where: {...}, take: 2000 })
  Web Assembly: Current
   2.06x slower than Node API: Current
   1.25x slower than Web Assembly: Baseline
   1.01x slower than Web Assembly: Latest

• movies.findMany({ include: { cast: true } take: 2000 }) (m2m)
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline     570 ms/iter       (564 ms … 592 ms)    572 ms    592 ms    592 ms
Web Assembly: Latest       779 ms/iter       (773 ms … 789 ms)    780 ms    789 ms    789 ms
Web Assembly: Current      786 ms/iter       (782 ms … 812 ms)    788 ms    812 ms    812 ms
Node API: Current          477 ms/iter       (460 ms … 496 ms)    489 ms    496 ms    496 ms

summary for movies.findMany({ include: { cast: true } take: 2000 }) (m2m)
  Web Assembly: Current
   1.65x slower than Node API: Current
   1.38x slower than Web Assembly: Baseline
   1.01x slower than Web Assembly: Latest

• movies.findMany({ where: {...}, include: { cast: true } take: 2000 }) (m2m)
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline  79'149 µs/iter (78'160 µs … 79'992 µs) 79'907 µs 79'992 µs 79'992 µs
Web Assembly: Latest       110 ms/iter       (110 ms … 111 ms)    111 ms    111 ms    111 ms
Web Assembly: Current      112 ms/iter       (111 ms … 113 ms)    113 ms    113 ms    113 ms
Node API: Current       62'489 µs/iter (61'455 µs … 64'746 µs) 63'333 µs 64'746 µs 64'746 µs

summary for movies.findMany({ where: {...}, include: { cast: true } take: 2000 }) (m2m)
  Web Assembly: Current
   1.79x slower than Node API: Current
   1.41x slower than Web Assembly: Baseline
   1.01x slower than Web Assembly: Latest

• movies.findMany({ take: 2000, include: { cast: { include: { person: true } } } })
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline   1'003 ms/iter     (999 ms … 1'008 ms)  1'006 ms  1'008 ms  1'008 ms
Web Assembly: Latest     1'294 ms/iter   (1'287 ms … 1'320 ms)  1'300 ms  1'320 ms  1'320 ms
Web Assembly: Current    1'307 ms/iter   (1'295 ms … 1'327 ms)  1'324 ms  1'327 ms  1'327 ms
Node API: Current          880 ms/iter       (847 ms … 895 ms)    893 ms    895 ms    895 ms

summary for movies.findMany({ take: 2000, include: { cast: { include: { person: true } } } })
  Web Assembly: Current
   1.48x slower than Node API: Current
   1.3x slower than Web Assembly: Baseline
   1.01x slower than Web Assembly: Latest

• movie.findMany({ where: { ... }, take: 2000, include: { cast: { include: { person: true } } } })
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline     142 ms/iter       (141 ms … 144 ms)    143 ms    144 ms    144 ms
Web Assembly: Latest       184 ms/iter       (182 ms … 186 ms)    186 ms    186 ms    186 ms
Web Assembly: Current      185 ms/iter       (184 ms … 188 ms)    185 ms    188 ms    188 ms
Node API: Current          111 ms/iter       (109 ms … 113 ms)    112 ms    113 ms    113 ms

summary for movie.findMany({ where: { ... }, take: 2000, include: { cast: { include: { person: true } } } })
  Web Assembly: Current
   1.67x slower than Node API: Current
   1.3x slower than Web Assembly: Baseline
   1.01x slower than Web Assembly: Latest

• movie.findMany({ where: { reviews: { author: { ... } }, take: 100 }) (to-many -> to-one)
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline   1'099 µs/iter     (999 µs … 1'979 µs)  1'059 µs  1'954 µs  1'979 µs
Web Assembly: Latest     1'371 µs/iter   (1'297 µs … 2'000 µs)  1'373 µs  1'828 µs  2'000 µs
Web Assembly: Current    1'375 µs/iter   (1'312 µs … 2'189 µs)  1'379 µs  2'105 µs  2'189 µs
Node API: Current          782 µs/iter     (753 µs … 1'187 µs)    794 µs    830 µs  1'187 µs

summary for movie.findMany({ where: { reviews: { author: { ... } }, take: 100 }) (to-many -> to-one)
  Web Assembly: Current
   1.76x slower than Node API: Current
   1.25x slower than Web Assembly: Baseline
   1x faster than Web Assembly: Latest

• movie.findMany({ where: { cast: { person: { ... } }, take: 100 }) (m2m -> to-one)
-------------------------------------------------------------- -----------------------------
Web Assembly: Baseline   1'049 µs/iter   (1'008 µs … 1'503 µs)  1'051 µs  1'370 µs  1'503 µs
Web Assembly: Latest     1'383 µs/iter   (1'327 µs … 1'996 µs)  1'383 µs  1'776 µs  1'996 µs
Web Assembly: Current    1'391 µs/iter   (1'339 µs … 2'027 µs)  1'395 µs  1'695 µs  2'027 µs
Node API: Current          790 µs/iter     (723 µs … 1'365 µs)    791 µs  1'192 µs  1'365 µs

summary for movie.findMany({ where: { cast: { person: { ... } }, take: 100 }) (m2m -> to-one)
  Web Assembly: Current
   1.76x slower than Node API: Current
   1.33x slower than Web Assembly: Baseline
   1.01x slower than Web Assembly: Latest

After changes in 05d5d2d

[jkomyno]

❌ WASM query-engine performance will worsen by 1.83%

Full benchmark report
After changes in 0ee5905

This report doesn't make any sense. Wasm Query Engine isn't affected at all by this PR.

[SevInf]

I think dependency on dmmf crate can be removed too?

[jkomyno]

I think dependency on dmmf crate can be removed too?

dmmf is a transitive dependency of request_handlers.
request_handlers::dmmf is still used by the binary query-engine. Though, to be honest, I don't see any dmmf reference in https://github.com/prisma/prisma/blob/main/packages/client/src/runtime/core/engines/binary/BinaryEngine.ts