README.md (7149B)
1 # sqlite 2 3 Package sqlite is a cgo-free port of SQLite. Although you could see mattn's driver (`github.com/mattn/go-sqlite3`) in go.mod file, we import it for tests only. 4 5 SQLite is an in-process implementation of a self-contained, serverless, 6 zero-configuration, transactional SQL database engine. 7 8 ## Thanks 9 10 This project is sponsored by Schleibinger Geräte Teubert u. Greim GmbH by 11 allowing one of the maintainers to work on it also in office hours. 12 13 ## Installation 14 15 $ go get modernc.org/sqlite 16 17 ## Documentation 18 19 [godoc.org/modernc.org/sqlite](http://godoc.org/modernc.org/sqlite) 20 21 ## Builders 22 23 [modern-c.appspot.com/-/builder/?importpath=modernc.org%2fsqlite](https://modern-c.appspot.com/-/builder/?importpath=modernc.org%2fsqlite) 24 25 ## Speedtest1 26 27 Numbers for the pure Go version were produced by 28 29 ~/src/modernc.org/sqlite/speedtest1$ go build && ./speedtest1 30 31 Numbers for the pure C version were produced by 32 33 ~/src/modernc.org/sqlite/testdata/sqlite-src-3410200/test$ gcc speedtest1.c ../../sqlite-amalgamation-3410200/sqlite3.c -lpthread -ldl && ./a.out 34 35 The results are from Go version 1.20.4 and GCC version 10.2.1 on a 36 Linux/amd64 machine, CPU: AMD Ryzen 9 3900X 12-Core Processor × 24, 128GB 37 RAM. Shown are the best of 3 runs. 38 39 Go C 40 41 -- Speedtest1 for SQLite 3.41.2 2023-03-22 11:56:21 0d1fc92f94cb6b76bffe3ec34d69 -- Speedtest1 for SQLite 3.41.2 2023-03-22 11:56:21 0d1fc92f94cb6b76bffe3ec34d69 42 100 - 50000 INSERTs into table with no index...................... 0.071s 100 - 50000 INSERTs into table with no index...................... 0.077s 43 110 - 50000 ordered INSERTS with one index/PK..................... 0.114s 110 - 50000 ordered INSERTS with one index/PK..................... 0.082s 44 120 - 50000 unordered INSERTS with one index/PK................... 0.137s 120 - 50000 unordered INSERTS with one index/PK................... 0.099s 45 130 - 25 SELECTS, numeric BETWEEN, unindexed...................... 0.083s 130 - 25 SELECTS, numeric BETWEEN, unindexed...................... 0.091s 46 140 - 10 SELECTS, LIKE, unindexed................................. 0.210s 140 - 10 SELECTS, LIKE, unindexed................................. 0.120s 47 142 - 10 SELECTS w/ORDER BY, unindexed............................ 0.276s 142 - 10 SELECTS w/ORDER BY, unindexed............................ 0.182s 48 145 - 10 SELECTS w/ORDER BY and LIMIT, unindexed.................. 0.183s 145 - 10 SELECTS w/ORDER BY and LIMIT, unindexed.................. 0.099s 49 150 - CREATE INDEX five times..................................... 0.172s 150 - CREATE INDEX five times..................................... 0.127s 50 160 - 10000 SELECTS, numeric BETWEEN, indexed..................... 0.080s 160 - 10000 SELECTS, numeric BETWEEN, indexed..................... 0.078s 51 161 - 10000 SELECTS, numeric BETWEEN, PK.......................... 0.080s 161 - 10000 SELECTS, numeric BETWEEN, PK.......................... 0.078s 52 170 - 10000 SELECTS, text BETWEEN, indexed........................ 0.187s 170 - 10000 SELECTS, text BETWEEN, indexed........................ 0.169s 53 180 - 50000 INSERTS with three indexes............................ 0.196s 180 - 50000 INSERTS with three indexes............................ 0.154s 54 190 - DELETE and REFILL one table................................. 0.200s 190 - DELETE and REFILL one table................................. 0.155s 55 200 - VACUUM...................................................... 0.180s 200 - VACUUM...................................................... 0.142s 56 210 - ALTER TABLE ADD COLUMN, and query........................... 0.004s 210 - ALTER TABLE ADD COLUMN, and query........................... 0.005s 57 230 - 10000 UPDATES, numeric BETWEEN, indexed..................... 0.093s 230 - 10000 UPDATES, numeric BETWEEN, indexed..................... 0.080s 58 240 - 50000 UPDATES of individual rows............................ 0.153s 240 - 50000 UPDATES of individual rows............................ 0.137s 59 250 - One big UPDATE of the whole 50000-row table................. 0.024s 250 - One big UPDATE of the whole 50000-row table................. 0.019s 60 260 - Query added column after filling............................ 0.004s 260 - Query added column after filling............................ 0.005s 61 270 - 10000 DELETEs, numeric BETWEEN, indexed..................... 0.278s 270 - 10000 DELETEs, numeric BETWEEN, indexed..................... 0.263s 62 280 - 50000 DELETEs of individual rows............................ 0.188s 280 - 50000 DELETEs of individual rows............................ 0.180s 63 290 - Refill two 50000-row tables using REPLACE................... 0.411s 290 - Refill two 50000-row tables using REPLACE................... 0.359s 64 300 - Refill a 50000-row table using (b&1)==(a&1)................. 0.175s 300 - Refill a 50000-row table using (b&1)==(a&1)................. 0.151s 65 310 - 10000 four-ways joins....................................... 0.427s 310 - 10000 four-ways joins....................................... 0.365s 66 320 - subquery in result set...................................... 0.440s 320 - subquery in result set...................................... 0.521s 67 400 - 70000 REPLACE ops on an IPK................................. 0.125s 400 - 70000 REPLACE ops on an IPK................................. 0.106s 68 410 - 70000 SELECTS on an IPK..................................... 0.081s 410 - 70000 SELECTS on an IPK..................................... 0.078s 69 500 - 70000 REPLACE on TEXT PK.................................... 0.174s 500 - 70000 REPLACE on TEXT PK.................................... 0.116s 70 510 - 70000 SELECTS on a TEXT PK.................................. 0.153s 510 - 70000 SELECTS on a TEXT PK.................................. 0.117s 71 520 - 70000 SELECT DISTINCT....................................... 0.083s 520 - 70000 SELECT DISTINCT....................................... 0.067s 72 980 - PRAGMA integrity_check...................................... 0.436s 980 - PRAGMA integrity_check...................................... 0.377s 73 990 - ANALYZE..................................................... 0.107s 990 - ANALYZE..................................................... 0.038s 74 TOTAL....................................................... 5.525s TOTAL....................................................... 4.637s 75 76 This particular test executes 16.1% faster in the C version.