forked from mirror/go-sqlcipher
mattn
GitHub
commit
64af6008b1
210
README.md
210
README.md
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@ -10,11 +10,29 @@ go-sqlite3
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sqlite3 driver conforming to the built-in database/sql interface
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Supported Golang version:
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- 1.8.x
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- 1.9.x
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- 1.10.x
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### Overview
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- [Installation](#installation)
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- [API Reference](#api-reference)
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- [Features](#features)
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- [Compilation](#compilation)
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- [Android](#android)
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- [ARM](#arm)
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- [Cross Compile](#cross-compile)
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- [Docker](#docker)
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- [Alpine](#alpine)
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- [Google Cloud Platform](#google-cloud-platform)
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- [Linux](#linux)
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- [Fedora](#fedora)
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- [Ubuntu](#ubuntu)
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- [Mac OSX](#mac-osx)
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- [Windows](#windows)
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- [Errors](#errors)
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- [FAQ](#faq)
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- [License](#license)
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@ -28,6 +46,8 @@ _go-sqlite3_ is *cgo* package.
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If you want to build your app using go-sqlite3, you need gcc.
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However, after you have built and installed _go-sqlite3_ with `go install github.com/mattn/go-sqlite3` (which requires gcc), you can build your app without relying on gcc in future.
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***Important: because this is a `CGO` enabled package you are required to set the environment variable `CGO_ENABLED=1` and have a `gcc` compile present within your path.***
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# API Reference
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API documentation can be found here: http://godoc.org/github.com/mattn/go-sqlite3
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@ -40,6 +60,26 @@ This package allows additional configuration of features available within SQLite
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[Click here for more information about build tags / constraints.](https://golang.org/pkg/go/build/#hdr-Build_Constraints)
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### Usage
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If you wish to build this library with additional extensions / features.
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Use the following command.
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```bash
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go build --tags "<FEATURE>"
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```
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For available features see the extension list.
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When using multiple build tags, all the different tags should be space delimted.
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Example:
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```bash
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go build --tags "icu json1 fts5 secure_delete"
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```
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### Feature / Extension List
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| Extension | Build Tag | Description |
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|-----------|-----------|-------------|
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| Additional Statistics | sqlite_stat4 | This option adds additional logic to the ANALYZE command and to the query planner that can help SQLite to chose a better query plan under certain situations. The ANALYZE command is enhanced to collect histogram data from all columns of every index and store that data in the sqlite_stat4 table.<br><br>The query planner will then use the histogram data to help it make better index choices. The downside of this compile-time option is that it violates the query planner stability guarantee making it more difficult to ensure consistent performance in mass-produced applications.<br><br>SQLITE_ENABLE_STAT4 is an enhancement of SQLITE_ENABLE_STAT3. STAT3 only recorded histogram data for the left-most column of each index whereas the STAT4 enhancement records histogram data from all columns of each index.<br><br>The SQLITE_ENABLE_STAT3 compile-time option is a no-op and is ignored if the SQLITE_ENABLE_STAT4 compile-time option is used |
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@ -56,33 +96,166 @@ This package allows additional configuration of features available within SQLite
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| Secure Delete | sqlite_secure_delete | This compile-time option changes the default setting of the secure_delete pragma.<br><br>When this option is not used, secure_delete defaults to off. When this option is present, secure_delete defaults to on.<br><br>The secure_delete setting causes deleted content to be overwritten with zeros. There is a small performance penalty since additional I/O must occur.<br><br>On the other hand, secure_delete can prevent fragments of sensitive information from lingering in unused parts of the database file after it has been deleted. See the documentation on the secure_delete pragma for additional information |
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| Tracing / Debug | sqlite_trace | Activate trace functions |
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# FAQ
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# Compilation
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- Want to build go-sqlite3 with libsqlite3 on my linux.
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This package requires `CGO_ENABLED=1` ennvironment variable if not set by default, and the presence of the `gcc` compiler.
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Use `go build --tags "libsqlite3 linux"`
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If you need to add additional CFLAGS or LDFLAGS to the build command, and do not want to modify this package. Then this can be achieved by using the `CGO_CFLAGS` and `CGO_LDFLAGS` environment variables.
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- Want to build go-sqlite3 with libsqlite3 on OS X.
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## Android
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Install sqlite3 from homebrew: `brew install sqlite3`
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This package can be compiled for android.
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Compile with:
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Use `go build --tags "libsqlite3 darwin"`
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```bash
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go build --tags "android"
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```
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- Want to build go-sqlite3 with additional extensions / features.
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For more information see [#201](https://github.com/mattn/go-sqlite3/issues/201)
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Use `go build --tags "<FEATURE>"`
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# ARM
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When using multiple build tags, all the different tags should be space delimted.
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To compile for `ARM` use the following environment.
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For available features / extensions see [Features](#features).
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```bash
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env CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ \
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CGO_ENABLED=1 GOOS=linux GOARCH=arm GOARM=7 \
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go build -v
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```
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Example building multiple features: `go build --tags "icu json1 fts5 secure_delete"`
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Additional information:
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- [#242](https://github.com/mattn/go-sqlite3/issues/242)
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- [#504](https://github.com/mattn/go-sqlite3/issues/504)
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# Cross Compile
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This library can be cross-compiled.
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In some cases you are required to the `CC` environment variable with the cross compiler.
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Additional information:
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- [#491](https://github.com/mattn/go-sqlite3/issues/491)
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- [#560](https://github.com/mattn/go-sqlite3/issues/560)
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# Google Cloud Platform
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Building on GCP is not possible because `Google Cloud Platform does not allow `gcc` to be executed.
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Please work only with compiled final binaries.
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## Linux
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To compile this package on Linux you must install the development tools for your linux distribution.
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To compile under linux use the build tag `linux`.
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```bash
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go build --tags "linux"
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```
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If you wish to link directly to libsqlite3 then you can use the `libsqlite3` build tag.
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```
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go build --tags "libsqlite3 linux"
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```
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### Alpine
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When building in an `alpine` container run the following command before building.
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```
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apk add --update gcc musl-dev
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```
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### Fedora
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```bash
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sudo yum groupinstall "Development Tools" "Development Libraries"
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```
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### Ubuntu
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```bash
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sudo apt-get install build-essential
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```
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## Mac OSX
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OSX should have all the tools present to compile this package, if not install XCode this will add all the developers tools.
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Required dependency
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```bash
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brew install sqlite3
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```
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For OSX there is an additional package install which is required if you whish to build the `icu` extension.
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This additional package can be installed with `homebrew`.
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```bash
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brew upgrade icu4c
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```
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To compile for Mac OSX.
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```bash
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go build --tags "darwin"
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```
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If you wish to link directly to libsqlite3 then you can use the `libsqlite3` build tag.
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```
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go build --tags "libsqlite3 darwin"
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```
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Additional information:
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- [#206](https://github.com/mattn/go-sqlite3/issues/206)
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- [#404](https://github.com/mattn/go-sqlite3/issues/404)
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## Windows
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To compile this package on Windows OS you must have the `gcc` compiler installed.
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1) Install a Windows `gcc` toolchain.
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2) Add the `bin` folders to the Windows path if the installer did not do this by default.
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3) Open a terminal for the TDM-GCC toolchain, can be found in the Windows Start menu.
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4) Navigate to your project folder and run the `go build ...` command for this package.
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For example the TDM-GCC Toolchain can be found [here](ttps://sourceforge.net/projects/tdm-gcc/).
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## Errors
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- Compile error: `can not be used when making a shared object; recompile with -fPIC`
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When receiving a compile time error referencing recompile with `-FPIC` then you
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are probably using a hardend system.
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You can copile the library on a hardend system with the following command.
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```bash
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go build -ldflags '-extldflags=-fno-PIC'
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```
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More details see [#120](https://github.com/mattn/go-sqlite3/issues/120)
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- Can't build go-sqlite3 on windows 64bit.
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> Probably, you are using go 1.0, go1.0 has a problem when it comes to compiling/linking on windows 64bit.
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> See: [#27](https://github.com/mattn/go-sqlite3/issues/27)
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- `go get github.com/mattn/go-sqlite3` throws compilation error.
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`gcc` throws: `internal compiler error`
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Remove the download repository from your disk and try re-install with:
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```bash
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go install github.com/mattn/go-sqlite3
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```
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# FAQ
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- Getting insert error while query is opened.
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> You can pass some arguments into the connection string, for example, a URI.
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@ -110,6 +283,21 @@ This package allows additional configuration of features available within SQLite
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connection to this string will point to the same in-memory database. See
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[#204](https://github.com/mattn/go-sqlite3/issues/204) for more info.
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- Reading from database with large amount of goroutines fails on OSX.
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OS X limits OS-wide to not have more than 1000 files open simultaneously by default.
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For more information see [#289](https://github.com/mattn/go-sqlite3/issues/289)
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- Trying to execure a `.` (dot) command throws an error.
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Error: `Error: near ".": syntax error`
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Dot command are part of SQLite3 CLI not of this library.
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You need to implement the feature or call the sqlite3 cli.
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More infomation see [#305](https://github.com/mattn/go-sqlite3/issues/305)
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# License
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MIT: http://mattn.mit-license.org/2012
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