go-sqlite3: github.com/mattn/go-sqlite3 Index | Files | Directories

package sqlite3

import "github.com/mattn/go-sqlite3"

Package sqlite3 provides interface to SQLite3 databases.

This works as a driver for database/sql.


go get github.com/mattn/go-sqlite3

Supported Types

Currently, go-sqlite3 supports the following data types.

|go        | sqlite3           |
|nil       | null              |
|int       | integer           |
|int64     | integer           |
|float64   | float             |
|bool      | integer           |
|[]byte    | blob              |
|string    | text              |
|time.Time | timestamp/datetime|

SQLite3 Extension

You can write your own extension module for sqlite3. For example, below is an extension for a Regexp matcher operation.

#include <pcre.h>
#include <string.h>
#include <stdio.h>
#include <sqlite3ext.h>

static void regexp_func(sqlite3_context *context, int argc, sqlite3_value **argv) {
  if (argc >= 2) {
    const char *target  = (const char *)sqlite3_value_text(argv[1]);
    const char *pattern = (const char *)sqlite3_value_text(argv[0]);
    const char* errstr = NULL;
    int erroff = 0;
    int vec[500];
    int n, rc;
    pcre* re = pcre_compile(pattern, 0, &errstr, &erroff, NULL);
    rc = pcre_exec(re, NULL, target, strlen(target), 0, 0, vec, 500);
    if (rc <= 0) {
      sqlite3_result_error(context, errstr, 0);
    sqlite3_result_int(context, 1);

#ifdef _WIN32
int sqlite3_extension_init(sqlite3 *db, char **errmsg,
      const sqlite3_api_routines *api) {
  return sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8,
      (void*)db, regexp_func, NULL, NULL);

It needs to be built as a so/dll shared library. And you need to register the extension module like below.

		Extensions: []string{

Then, you can use this extension.

rows, err := db.Query("select text from mytable where name regexp '^golang'")

Connection Hook

You can hook and inject your code when the connection is established. database/sql doesn't provide a way to get native go-sqlite3 interfaces. So if you want, you need to set ConnectHook and get the SQLiteConn.

				ConnectHook: func(conn *sqlite3.SQLiteConn) error {
					sqlite3conn = append(sqlite3conn, conn)
					return nil

Go SQlite3 Extensions

If you want to register Go functions as SQLite extension functions, call RegisterFunction from ConnectHook.

regex = func(re, s string) (bool, error) {
	return regexp.MatchString(re, s)
				ConnectHook: func(conn *sqlite3.SQLiteConn) error {
					return conn.RegisterFunc("regexp", regex, true)

See the documentation of RegisterFunc for more details.


Package Files

backup.go callback.go doc.go error.go sqlite3.go sqlite3_load_extension.go sqlite3_other.go


const ErrNoMask C.int = 0xff


var (
    ErrError      = ErrNo(1)  /* SQL error or missing database */
    ErrInternal   = ErrNo(2)  /* Internal logic error in SQLite */
    ErrPerm       = ErrNo(3)  /* Access permission denied */
    ErrAbort      = ErrNo(4)  /* Callback routine requested an abort */
    ErrBusy       = ErrNo(5)  /* The database file is locked */
    ErrLocked     = ErrNo(6)  /* A table in the database is locked */
    ErrNomem      = ErrNo(7)  /* A malloc() failed */
    ErrReadonly   = ErrNo(8)  /* Attempt to write a readonly database */
    ErrInterrupt  = ErrNo(9)  /* Operation terminated by sqlite3_interrupt() */
    ErrIoErr      = ErrNo(10) /* Some kind of disk I/O error occurred */
    ErrCorrupt    = ErrNo(11) /* The database disk image is malformed */
    ErrNotFound   = ErrNo(12) /* Unknown opcode in sqlite3_file_control() */
    ErrFull       = ErrNo(13) /* Insertion failed because database is full */
    ErrCantOpen   = ErrNo(14) /* Unable to open the database file */
    ErrProtocol   = ErrNo(15) /* Database lock protocol error */
    ErrEmpty      = ErrNo(16) /* Database is empty */
    ErrSchema     = ErrNo(17) /* The database schema changed */
    ErrTooBig     = ErrNo(18) /* String or BLOB exceeds size limit */
    ErrConstraint = ErrNo(19) /* Abort due to constraint violation */
    ErrMismatch   = ErrNo(20) /* Data type mismatch */
    ErrMisuse     = ErrNo(21) /* Library used incorrectly */
    ErrNoLFS      = ErrNo(22) /* Uses OS features not supported on host */
    ErrAuth       = ErrNo(23) /* Authorization denied */
    ErrFormat     = ErrNo(24) /* Auxiliary database format error */
    ErrRange      = ErrNo(25) /* 2nd parameter to sqlite3_bind out of range */
    ErrNotADB     = ErrNo(26) /* File opened that is not a database file */
    ErrNotice     = ErrNo(27) /* Notifications from sqlite3_log() */
    ErrWarning    = ErrNo(28) /* Warnings from sqlite3_log() */

result codes from http://www.sqlite.org/c3ref/c_abort.html

var (
    ErrIoErrRead              = ErrIoErr.Extend(1)
    ErrIoErrShortRead         = ErrIoErr.Extend(2)
    ErrIoErrWrite             = ErrIoErr.Extend(3)
    ErrIoErrFsync             = ErrIoErr.Extend(4)
    ErrIoErrDirFsync          = ErrIoErr.Extend(5)
    ErrIoErrTruncate          = ErrIoErr.Extend(6)
    ErrIoErrFstat             = ErrIoErr.Extend(7)
    ErrIoErrUnlock            = ErrIoErr.Extend(8)
    ErrIoErrRDlock            = ErrIoErr.Extend(9)
    ErrIoErrDelete            = ErrIoErr.Extend(10)
    ErrIoErrBlocked           = ErrIoErr.Extend(11)
    ErrIoErrNoMem             = ErrIoErr.Extend(12)
    ErrIoErrAccess            = ErrIoErr.Extend(13)
    ErrIoErrCheckReservedLock = ErrIoErr.Extend(14)
    ErrIoErrLock              = ErrIoErr.Extend(15)
    ErrIoErrClose             = ErrIoErr.Extend(16)
    ErrIoErrDirClose          = ErrIoErr.Extend(17)
    ErrIoErrSHMOpen           = ErrIoErr.Extend(18)
    ErrIoErrSHMSize           = ErrIoErr.Extend(19)
    ErrIoErrSHMLock           = ErrIoErr.Extend(20)
    ErrIoErrSHMMap            = ErrIoErr.Extend(21)
    ErrIoErrSeek              = ErrIoErr.Extend(22)
    ErrIoErrDeleteNoent       = ErrIoErr.Extend(23)
    ErrIoErrMMap              = ErrIoErr.Extend(24)
    ErrIoErrGetTempPath       = ErrIoErr.Extend(25)
    ErrIoErrConvPath          = ErrIoErr.Extend(26)
    ErrLockedSharedCache      = ErrLocked.Extend(1)
    ErrBusyRecovery           = ErrBusy.Extend(1)
    ErrBusySnapshot           = ErrBusy.Extend(2)
    ErrCantOpenNoTempDir      = ErrCantOpen.Extend(1)
    ErrCantOpenIsDir          = ErrCantOpen.Extend(2)
    ErrCantOpenFullPath       = ErrCantOpen.Extend(3)
    ErrCantOpenConvPath       = ErrCantOpen.Extend(4)
    ErrCorruptVTab            = ErrCorrupt.Extend(1)
    ErrReadonlyRecovery       = ErrReadonly.Extend(1)
    ErrReadonlyCantLock       = ErrReadonly.Extend(2)
    ErrReadonlyRollback       = ErrReadonly.Extend(3)
    ErrReadonlyDbMoved        = ErrReadonly.Extend(4)
    ErrAbortRollback          = ErrAbort.Extend(2)
    ErrConstraintCheck        = ErrConstraint.Extend(1)
    ErrConstraintCommitHook   = ErrConstraint.Extend(2)
    ErrConstraintForeignKey   = ErrConstraint.Extend(3)
    ErrConstraintFunction     = ErrConstraint.Extend(4)
    ErrConstraintNotNull      = ErrConstraint.Extend(5)
    ErrConstraintPrimaryKey   = ErrConstraint.Extend(6)
    ErrConstraintTrigger      = ErrConstraint.Extend(7)
    ErrConstraintUnique       = ErrConstraint.Extend(8)
    ErrConstraintVTab         = ErrConstraint.Extend(9)
    ErrConstraintRowId        = ErrConstraint.Extend(10)
    ErrNoticeRecoverWAL       = ErrNotice.Extend(1)
    ErrNoticeRecoverRollback  = ErrNotice.Extend(2)
    ErrWarningAutoIndex       = ErrWarning.Extend(1)

result codes from http://www.sqlite.org/c3ref/c_abort_rollback.html

var SQLiteTimestampFormats = []string{

    "2006-01-02 15:04:05.999999999-07:00",
    "2006-01-02 15:04:05.999999999",
    "2006-01-02 15:04:05",
    "2006-01-02 15:04",

Timestamp formats understood by both this module and SQLite. The first format in the slice will be used when saving time values into the database. When parsing a string from a timestamp or datetime column, the formats are tried in order.

func Version

func Version() (libVersion string, libVersionNumber int, sourceId string)

Version returns SQLite library version information.

type ErrNo

type ErrNo int

func (ErrNo) Error

func (err ErrNo) Error() string

func (ErrNo) Extend

func (err ErrNo) Extend(by int) ErrNoExtended

type ErrNoExtended

type ErrNoExtended int

func (ErrNoExtended) Error

func (err ErrNoExtended) Error() string

type Error

type Error struct {
    Code         ErrNo         /* The error code returned by SQLite */
    ExtendedCode ErrNoExtended /* The extended error code returned by SQLite */
    // contains filtered or unexported fields

func (Error) Error

func (err Error) Error() string

type SQLiteBackup

type SQLiteBackup struct {
    // contains filtered or unexported fields

func (*SQLiteBackup) Close

func (b *SQLiteBackup) Close() error

func (*SQLiteBackup) Finish

func (b *SQLiteBackup) Finish() error

func (*SQLiteBackup) PageCount

func (b *SQLiteBackup) PageCount() int

func (*SQLiteBackup) Remaining

func (b *SQLiteBackup) Remaining() int

func (*SQLiteBackup) Step

func (b *SQLiteBackup) Step(p int) (bool, error)

Backs up for one step. Calls the underlying `sqlite3_backup_step` function. This function returns a boolean indicating if the backup is done and an error signalling any other error. Done is returned if the underlying C function returns SQLITE_DONE (Code 101)

type SQLiteConn

type SQLiteConn struct {
    // contains filtered or unexported fields

Conn struct.

func (*SQLiteConn) AutoCommit

func (c *SQLiteConn) AutoCommit() bool

AutoCommit return which currently auto commit or not.

func (*SQLiteConn) Backup

func (c *SQLiteConn) Backup(dest string, conn *SQLiteConn, src string) (*SQLiteBackup, error)

func (*SQLiteConn) Begin

func (c *SQLiteConn) Begin() (driver.Tx, error)

Begin transaction.

func (*SQLiteConn) Close

func (c *SQLiteConn) Close() error

Close the connection.

func (*SQLiteConn) Exec

func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, error)

Implements Execer

func (*SQLiteConn) LoadExtension

func (c *SQLiteConn) LoadExtension(lib string, entry string) error

func (*SQLiteConn) Prepare

func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error)

Prepare the query string. Return a new statement.

func (*SQLiteConn) Query

func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, error)

Implements Queryer

func (*SQLiteConn) RegisterAggregator

func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool) error

RegisterAggregator makes a Go type available as a SQLite aggregation function.

Because aggregation is incremental, it's implemented in Go with a type that has 2 methods: func Step(values) accumulates one row of data into the accumulator, and func Done() ret finalizes and returns the aggregate value. "values" and "ret" may be any type supported by RegisterFunc.

RegisterAggregator takes as implementation a constructor function that constructs an instance of the aggregator type each time an aggregation begins. The constructor must return a pointer to a type, or an interface that implements Step() and Done().

The constructor function and the Step/Done methods may optionally return an error in addition to their other return values.

See _example/go_custom_funcs for a detailed example.

func (*SQLiteConn) RegisterFunc

func (c *SQLiteConn) RegisterFunc(name string, impl interface{}, pure bool) error

RegisterFunc makes a Go function available as a SQLite function.

The Go function can have arguments of the following types: any numeric type except complex, bool, []byte, string and interface{}. interface{} arguments are given the direct translation of the SQLite data type: int64 for INTEGER, float64 for FLOAT, []byte for BLOB, string for TEXT.

The function can additionally be variadic, as long as the type of the variadic argument is one of the above.

If pure is true. SQLite will assume that the function's return value depends only on its inputs, and make more aggressive optimizations in its queries.

See _example/go_custom_funcs for a detailed example.

type SQLiteDriver

type SQLiteDriver struct {
    Extensions  []string
    ConnectHook func(*SQLiteConn) error

Driver struct.

func (*SQLiteDriver) Open

func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error)

Open database and return a new connection. You can specify a DSN string using a URI as the filename.


go-sqlite3 adds the following query parameters to those used by SQLite:

  Specify location of time format. It's possible to specify "auto".
  Specify value for sqlite3_busy_timeout.
  Specify locking behavior for transactions.  XXX can be "immediate",
  "deferred", "exclusive".

type SQLiteResult

type SQLiteResult struct {
    // contains filtered or unexported fields

Result struct.

func (*SQLiteResult) LastInsertId

func (r *SQLiteResult) LastInsertId() (int64, error)

Return last inserted ID.

func (*SQLiteResult) RowsAffected

func (r *SQLiteResult) RowsAffected() (int64, error)

Return how many rows affected.

type SQLiteRows

type SQLiteRows struct {
    // contains filtered or unexported fields

Rows struct.

func (*SQLiteRows) Close

func (rc *SQLiteRows) Close() error

Close the rows.

func (*SQLiteRows) Columns

func (rc *SQLiteRows) Columns() []string

Return column names.

func (*SQLiteRows) DeclTypes

func (rc *SQLiteRows) DeclTypes() []string

Return column types.

func (*SQLiteRows) Next

func (rc *SQLiteRows) Next(dest []driver.Value) error

Move cursor to next.

type SQLiteStmt

type SQLiteStmt struct {
    // contains filtered or unexported fields

Stmt struct.

func (*SQLiteStmt) Close

func (s *SQLiteStmt) Close() error

Close the statement.

func (*SQLiteStmt) Exec

func (s *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error)

Execute the statement with arguments. Return result object.

func (*SQLiteStmt) NumInput

func (s *SQLiteStmt) NumInput() int

Return a number of parameters.

func (*SQLiteStmt) Query

func (s *SQLiteStmt) Query(args []driver.Value) (driver.Rows, error)

Query the statement with arguments. Return records.

type SQLiteTx

type SQLiteTx struct {
    // contains filtered or unexported fields

Tx struct.

func (*SQLiteTx) Commit

func (tx *SQLiteTx) Commit() error

Commit transaction.

func (*SQLiteTx) Rollback

func (tx *SQLiteTx) Rollback() error

Rollback transaction.



Package sqlite3 imports 15 packages (graph) and is imported by 877 packages. Updated 2016-05-20. Refresh now. Tools for package owners.