386 lines
17 KiB
Go
386 lines
17 KiB
Go
// Copyright 2017 The Sqlite Authors. All rights reserved.
|
||
// Use of this source code is governed by a BSD-style
|
||
// license that can be found in the LICENSE file.
|
||
|
||
// Package sqlite is a sql/database driver using a CGo-free port of the C
|
||
// SQLite3 library.
|
||
//
|
||
// SQLite is an in-process implementation of a self-contained, serverless,
|
||
// zero-configuration, transactional SQL database engine.
|
||
//
|
||
// Thanks
|
||
//
|
||
// This project is sponsored by Schleibinger Geräte Teubert u. Greim GmbH by
|
||
// allowing one of the maintainers to work on it also in office hours.
|
||
//
|
||
// Supported platforms and architectures
|
||
//
|
||
// These combinations of GOOS and GOARCH are currently supported
|
||
//
|
||
// OS Arch SQLite version
|
||
// ------------------------------
|
||
// darwin amd64 3.41.2
|
||
// darwin arm64 3.41.2
|
||
// freebsd amd64 3.41.2
|
||
// freebsd arm64 3.41.2
|
||
// linux 386 3.41.2
|
||
// linux amd64 3.41.2
|
||
// linux arm 3.41.2
|
||
// linux arm64 3.41.2
|
||
// linux ppc64le 3.41.2
|
||
// linux riscv64 3.41.2
|
||
// linux s390x 3.41.2
|
||
// windows amd64 3.41.2
|
||
// windows arm64 3.41.2
|
||
//
|
||
// Builders
|
||
//
|
||
// Builder results available at:
|
||
//
|
||
// https://modern-c.appspot.com/-/builder/?importpath=modernc.org%2fsqlite
|
||
//
|
||
// Speedtest1
|
||
//
|
||
// Numbers for the pure Go version were produced by
|
||
//
|
||
// ~/src/modernc.org/sqlite/speedtest1$ go build && ./speedtest1
|
||
//
|
||
// Numbers for the pure C version were produced by
|
||
//
|
||
// ~/src/modernc.org/sqlite/testdata/sqlite-src-3410200/test$ gcc speedtest1.c ../../sqlite-amalgamation-3410200/sqlite3.c -lpthread -ldl && ./a.out
|
||
//
|
||
// The results are from Go version 1.20.4 and GCC version 10.2.1 on a
|
||
// Linux/amd64 machine, CPU: AMD Ryzen 9 3900X 12-Core Processor × 24, 128GB
|
||
// RAM. Shown are the best of 3 runs.
|
||
//
|
||
// Go C
|
||
//
|
||
// -- 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
|
||
// 100 - 50000 INSERTs into table with no index...................... 0.071s 100 - 50000 INSERTs into table with no index...................... 0.077s
|
||
// 110 - 50000 ordered INSERTS with one index/PK..................... 0.114s 110 - 50000 ordered INSERTS with one index/PK..................... 0.082s
|
||
// 120 - 50000 unordered INSERTS with one index/PK................... 0.137s 120 - 50000 unordered INSERTS with one index/PK................... 0.099s
|
||
// 130 - 25 SELECTS, numeric BETWEEN, unindexed...................... 0.083s 130 - 25 SELECTS, numeric BETWEEN, unindexed...................... 0.091s
|
||
// 140 - 10 SELECTS, LIKE, unindexed................................. 0.210s 140 - 10 SELECTS, LIKE, unindexed................................. 0.120s
|
||
// 142 - 10 SELECTS w/ORDER BY, unindexed............................ 0.276s 142 - 10 SELECTS w/ORDER BY, unindexed............................ 0.182s
|
||
// 145 - 10 SELECTS w/ORDER BY and LIMIT, unindexed.................. 0.183s 145 - 10 SELECTS w/ORDER BY and LIMIT, unindexed.................. 0.099s
|
||
// 150 - CREATE INDEX five times..................................... 0.172s 150 - CREATE INDEX five times..................................... 0.127s
|
||
// 160 - 10000 SELECTS, numeric BETWEEN, indexed..................... 0.080s 160 - 10000 SELECTS, numeric BETWEEN, indexed..................... 0.078s
|
||
// 161 - 10000 SELECTS, numeric BETWEEN, PK.......................... 0.080s 161 - 10000 SELECTS, numeric BETWEEN, PK.......................... 0.078s
|
||
// 170 - 10000 SELECTS, text BETWEEN, indexed........................ 0.187s 170 - 10000 SELECTS, text BETWEEN, indexed........................ 0.169s
|
||
// 180 - 50000 INSERTS with three indexes............................ 0.196s 180 - 50000 INSERTS with three indexes............................ 0.154s
|
||
// 190 - DELETE and REFILL one table................................. 0.200s 190 - DELETE and REFILL one table................................. 0.155s
|
||
// 200 - VACUUM...................................................... 0.180s 200 - VACUUM...................................................... 0.142s
|
||
// 210 - ALTER TABLE ADD COLUMN, and query........................... 0.004s 210 - ALTER TABLE ADD COLUMN, and query........................... 0.005s
|
||
// 230 - 10000 UPDATES, numeric BETWEEN, indexed..................... 0.093s 230 - 10000 UPDATES, numeric BETWEEN, indexed..................... 0.080s
|
||
// 240 - 50000 UPDATES of individual rows............................ 0.153s 240 - 50000 UPDATES of individual rows............................ 0.137s
|
||
// 250 - One big UPDATE of the whole 50000-row table................. 0.024s 250 - One big UPDATE of the whole 50000-row table................. 0.019s
|
||
// 260 - Query added column after filling............................ 0.004s 260 - Query added column after filling............................ 0.005s
|
||
// 270 - 10000 DELETEs, numeric BETWEEN, indexed..................... 0.278s 270 - 10000 DELETEs, numeric BETWEEN, indexed..................... 0.263s
|
||
// 280 - 50000 DELETEs of individual rows............................ 0.188s 280 - 50000 DELETEs of individual rows............................ 0.180s
|
||
// 290 - Refill two 50000-row tables using REPLACE................... 0.411s 290 - Refill two 50000-row tables using REPLACE................... 0.359s
|
||
// 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
|
||
// 310 - 10000 four-ways joins....................................... 0.427s 310 - 10000 four-ways joins....................................... 0.365s
|
||
// 320 - subquery in result set...................................... 0.440s 320 - subquery in result set...................................... 0.521s
|
||
// 400 - 70000 REPLACE ops on an IPK................................. 0.125s 400 - 70000 REPLACE ops on an IPK................................. 0.106s
|
||
// 410 - 70000 SELECTS on an IPK..................................... 0.081s 410 - 70000 SELECTS on an IPK..................................... 0.078s
|
||
// 500 - 70000 REPLACE on TEXT PK.................................... 0.174s 500 - 70000 REPLACE on TEXT PK.................................... 0.116s
|
||
// 510 - 70000 SELECTS on a TEXT PK.................................. 0.153s 510 - 70000 SELECTS on a TEXT PK.................................. 0.117s
|
||
// 520 - 70000 SELECT DISTINCT....................................... 0.083s 520 - 70000 SELECT DISTINCT....................................... 0.067s
|
||
// 980 - PRAGMA integrity_check...................................... 0.436s 980 - PRAGMA integrity_check...................................... 0.377s
|
||
// 990 - ANALYZE..................................................... 0.107s 990 - ANALYZE..................................................... 0.038s
|
||
// TOTAL....................................................... 5.525s TOTAL....................................................... 4.637s
|
||
//
|
||
// This particular test executes 16.1% faster in the C version.
|
||
//
|
||
// Changelog
|
||
//
|
||
// 2023-06-01 v1.23.0:
|
||
//
|
||
// Allow registering aggregate functions
|
||
//
|
||
// 2023-04-22 v1.22.0:
|
||
//
|
||
// Support linux/s390x.
|
||
//
|
||
// 2023-02-23 v1.21.0:
|
||
//
|
||
// Upgrade to SQLite 3.41.0, release notes at https://sqlite.org/releaselog/3_41_0.html.
|
||
//
|
||
// 2022-11-28 v1.20.0
|
||
//
|
||
// Support linux/ppc64le.
|
||
//
|
||
// 2022-09-16 v1.19.0:
|
||
//
|
||
// Support frebsd/arm64.
|
||
//
|
||
// 2022-07-26 v1.18.0:
|
||
//
|
||
// Adds support for Go fs.FS based SQLite virtual filesystems, see function New
|
||
// in modernc.org/sqlite/vfs and/or TestVFS in all_test.go
|
||
//
|
||
// 2022-04-24 v1.17.0:
|
||
//
|
||
// Support windows/arm64.
|
||
//
|
||
// 2022-04-04 v1.16.0:
|
||
//
|
||
// Support scalar application defined functions written in Go.
|
||
//
|
||
// https://www.sqlite.org/appfunc.html
|
||
//
|
||
// 2022-03-13 v1.15.0:
|
||
//
|
||
// Support linux/riscv64.
|
||
//
|
||
// 2021-11-13 v1.14.0:
|
||
//
|
||
// Support windows/amd64. This target had previously only experimental status
|
||
// because of a now resolved memory leak.
|
||
//
|
||
// 2021-09-07 v1.13.0:
|
||
//
|
||
// Support freebsd/amd64.
|
||
//
|
||
// Changelog
|
||
//
|
||
// 2021-06-23 v1.11.0:
|
||
//
|
||
// Upgrade to use sqlite 3.36.0, release notes at https://www.sqlite.org/releaselog/3_36_0.html.
|
||
//
|
||
// 2021-05-06 v1.10.6:
|
||
//
|
||
// Fixes a memory corruption issue
|
||
// (https://gitlab.com/cznic/sqlite/-/issues/53). Versions since v1.8.6 were
|
||
// affected and should be updated to v1.10.6.
|
||
//
|
||
// 2021-03-14 v1.10.0:
|
||
//
|
||
// Update to use sqlite 3.35.0, release notes at https://www.sqlite.org/releaselog/3_35_0.html.
|
||
//
|
||
// 2021-03-11 v1.9.0:
|
||
//
|
||
// Support darwin/arm64.
|
||
//
|
||
// 2021-01-08 v1.8.0:
|
||
//
|
||
// Support darwin/amd64.
|
||
//
|
||
// 2020-09-13 v1.7.0:
|
||
//
|
||
// Support linux/arm and linux/arm64.
|
||
//
|
||
// 2020-09-08 v1.6.0:
|
||
//
|
||
// Support linux/386.
|
||
//
|
||
// 2020-09-03 v1.5.0:
|
||
//
|
||
// This project is now completely CGo-free, including the Tcl tests.
|
||
//
|
||
// 2020-08-26 v1.4.0:
|
||
//
|
||
// First stable release for linux/amd64. The database/sql driver and its tests
|
||
// are CGo free. Tests of the translated sqlite3.c library still require CGo.
|
||
//
|
||
// $ make full
|
||
//
|
||
// ...
|
||
//
|
||
// SQLite 2020-08-14 13:23:32 fca8dc8b578f215a969cd899336378966156154710873e68b3d9ac5881b0ff3f
|
||
// 0 errors out of 928271 tests on 3900x Linux 64-bit little-endian
|
||
// WARNING: Multi-threaded tests skipped: Linked against a non-threadsafe Tcl build
|
||
// All memory allocations freed - no leaks
|
||
// Maximum memory usage: 9156360 bytes
|
||
// Current memory usage: 0 bytes
|
||
// Number of malloc() : -1 calls
|
||
// --- PASS: TestTclTest (1785.04s)
|
||
// PASS
|
||
// ok modernc.org/sqlite 1785.041s
|
||
// $
|
||
//
|
||
// 2020-07-26 v1.4.0-beta1:
|
||
//
|
||
// The project has reached beta status while supporting linux/amd64 only at the
|
||
// moment. The 'extraquick' Tcl testsuite reports
|
||
//
|
||
// 630 errors out of 200177 tests on Linux 64-bit little-endian
|
||
//
|
||
// and some memory leaks
|
||
//
|
||
// Unfreed memory: 698816 bytes in 322 allocations
|
||
//
|
||
// 2019-12-28 v1.2.0-alpha.3: Third alpha fixes issue #19.
|
||
//
|
||
// It also bumps the minor version as the repository was wrongly already tagged
|
||
// with v1.1.0 before. Even though the tag was deleted there are proxies that
|
||
// cached that tag. Thanks /u/garaktailor for detecting the problem and
|
||
// suggesting this solution.
|
||
//
|
||
// 2019-12-26 v1.1.0-alpha.2: Second alpha release adds support for accessing a
|
||
// database concurrently by multiple goroutines and/or processes. v1.1.0 is now
|
||
// considered feature-complete. Next planed release should be a beta with a
|
||
// proper test suite.
|
||
//
|
||
// 2019-12-18 v1.1.0-alpha.1: First alpha release using the new cc/v3, gocc,
|
||
// qbe toolchain. Some primitive tests pass on linux_{amd64,386}. Not yet safe
|
||
// for concurrent access by multiple goroutines. Next alpha release is planed
|
||
// to arrive before the end of this year.
|
||
//
|
||
// 2017-06-10 Windows/Intel no more uses the VM (thanks Steffen Butzer).
|
||
//
|
||
// 2017-06-05 Linux/Intel no more uses the VM (cznic/virtual).
|
||
//
|
||
// Connecting to a database
|
||
//
|
||
// To access a Sqlite database do something like
|
||
//
|
||
// import (
|
||
// "database/sql"
|
||
//
|
||
// _ "modernc.org/sqlite"
|
||
// )
|
||
//
|
||
// ...
|
||
//
|
||
//
|
||
// db, err := sql.Open("sqlite", dsnURI)
|
||
//
|
||
// ...
|
||
//
|
||
// Debug and development versions
|
||
//
|
||
// A comma separated list of options can be passed to `go generate` via the
|
||
// environment variable GO_GENERATE. Some useful options include for example:
|
||
//
|
||
// -DSQLITE_DEBUG
|
||
// -DSQLITE_MEM_DEBUG
|
||
// -ccgo-verify-structs
|
||
//
|
||
// To create a debug/development version, issue for example:
|
||
//
|
||
// $ GO_GENERATE=-DSQLITE_DEBUG,-DSQLITE_MEM_DEBUG go generate
|
||
//
|
||
// Note: To run `go generate` you need to have modernc.org/ccgo/v3 installed.
|
||
//
|
||
// Hacking
|
||
//
|
||
// This is an example of how to use the debug logs in modernc.org/libc when hunting a bug.
|
||
//
|
||
//
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ git status
|
||
// On branch master
|
||
// Your branch is up to date with 'origin/master'.
|
||
//
|
||
// nothing to commit, working tree clean
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ git log -1
|
||
// commit df33b8d15107f3cc777799c0fe105f74ef499e62 (HEAD -> master, tag: v1.21.1, origin/master, origin/HEAD, wips, ok)
|
||
// Author: Jan Mercl <0xjnml@gmail.com>
|
||
// Date: Mon Mar 27 16:18:28 2023 +0200
|
||
//
|
||
// upgrade to SQLite 3.41.2
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ rm -f /tmp/libc.log ; go test -v -tags=libc.dmesg -run TestScalar ; ls -l /tmp/libc.log
|
||
// test binary compiled for linux/amd64
|
||
// === RUN TestScalar
|
||
// --- PASS: TestScalar (0.09s)
|
||
// PASS
|
||
// ok modernc.org/sqlite 0.128s
|
||
// -rw-r--r-- 1 jnml jnml 76 Apr 6 11:22 /tmp/libc.log
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ cat /tmp/libc.log
|
||
// [10723 sqlite.test] 2023-04-06 11:22:48.288066057 +0200 CEST m=+0.000707150
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$
|
||
//
|
||
//
|
||
// The /tmp/libc.log file is created as requested. No useful messages there because none are enabled in libc. Let's try to enable Xwrite as an example.
|
||
//
|
||
//
|
||
// 0:jnml@e5-1650:~/src/modernc.org/libc$ git status
|
||
// On branch master
|
||
// Your branch is up to date with 'origin/master'.
|
||
//
|
||
// Changes not staged for commit:
|
||
// (use "git add <file>..." to update what will be committed)
|
||
// (use "git restore <file>..." to discard changes in working directory)
|
||
// modified: libc_linux.go
|
||
//
|
||
// no changes added to commit (use "git add" and/or "git commit -a")
|
||
// 0:jnml@e5-1650:~/src/modernc.org/libc$ git log -1
|
||
// commit 1e22c18cf2de8aa86d5b19b165f354f99c70479c (HEAD -> master, tag: v1.22.3, origin/master, origin/HEAD)
|
||
// Author: Jan Mercl <0xjnml@gmail.com>
|
||
// Date: Wed Feb 22 20:27:45 2023 +0100
|
||
//
|
||
// support sqlite 3.41 on linux targets
|
||
// 0:jnml@e5-1650:~/src/modernc.org/libc$ git diff
|
||
// diff --git a/libc_linux.go b/libc_linux.go
|
||
// index 1c2f482..ac1f08d 100644
|
||
// --- a/libc_linux.go
|
||
// +++ b/libc_linux.go
|
||
// @@ -332,19 +332,19 @@ func Xwrite(t *TLS, fd int32, buf uintptr, count types.Size_t) types.Ssize_t {
|
||
// var n uintptr
|
||
// switch n, _, err = unix.Syscall(unix.SYS_WRITE, uintptr(fd), buf, uintptr(count)); err {
|
||
// case 0:
|
||
// - // if dmesgs {
|
||
// - // // dmesg("%v: %d %#x: %#x\n%s", origin(1), fd, count, n, hex.Dump(GoBytes(buf, int(n))))
|
||
// - // dmesg("%v: %d %#x: %#x", origin(1), fd, count, n)
|
||
// - // }
|
||
// + if dmesgs {
|
||
// + // dmesg("%v: %d %#x: %#x\n%s", origin(1), fd, count, n, hex.Dump(GoBytes(buf, int(n))))
|
||
// + dmesg("%v: %d %#x: %#x", origin(1), fd, count, n)
|
||
// + }
|
||
// return types.Ssize_t(n)
|
||
// case errno.EAGAIN:
|
||
// // nop
|
||
// }
|
||
// }
|
||
//
|
||
// - // if dmesgs {
|
||
// - // dmesg("%v: fd %v, count %#x: %v", origin(1), fd, count, err)
|
||
// - // }
|
||
// + if dmesgs {
|
||
// + dmesg("%v: fd %v, count %#x: %v", origin(1), fd, count, err)
|
||
// + }
|
||
// t.setErrno(err)
|
||
// return -1
|
||
// }
|
||
// 0:jnml@e5-1650:~/src/modernc.org/libc$
|
||
//
|
||
//
|
||
// We need to tell the Go build system to use our local, patched/debug libc:
|
||
//
|
||
//
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ go work use $(go env GOPATH)/src/modernc.org/libc
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ go work use .
|
||
//
|
||
//
|
||
// And run the test again:
|
||
//
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ rm -f /tmp/libc.log ; go test -v -tags=libc.dmesg -run TestScalar ; ls -l /tmp/libc.log
|
||
// test binary compiled for linux/amd64
|
||
// === RUN TestScalar
|
||
// --- PASS: TestScalar (0.26s)
|
||
// PASS
|
||
// ok modernc.org/sqlite 0.285s
|
||
// -rw-r--r-- 1 jnml jnml 918 Apr 6 11:29 /tmp/libc.log
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$ cat /tmp/libc.log
|
||
// [11910 sqlite.test] 2023-04-06 11:29:13.143589542 +0200 CEST m=+0.000689270
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x200: 0x200
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0xc: 0xc
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 7 0x1000: 0x1000
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 7 0x1000: 0x1000
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x200: 0x200
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x4: 0x4
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x1000: 0x1000
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x4: 0x4
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x4: 0x4
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x1000: 0x1000
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0x4: 0x4
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 8 0xc: 0xc
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 7 0x1000: 0x1000
|
||
// [11910 sqlite.test] libc_linux.go:337:Xwrite: 7 0x1000: 0x1000
|
||
// 0:jnml@e5-1650:~/src/modernc.org/sqlite$
|
||
//
|
||
// Sqlite documentation
|
||
//
|
||
// See https://sqlite.org/docs.html
|
||
package sqlite // import "modernc.org/sqlite"
|