Yet another SQLite binding based on:

• original Russ Cox's implementation,
• the Patrick Crosby's fork.

This binding implements the "database/sql/driver" interface.

See package documentation.

Open supports flags.
Conn#Exec handles multiple statements (separated by semicolons) properly.
Conn#Prepare can optionnaly #Bind as well.
Conn#Prepare can reuse already prepared Stmt.
Conn#Close ensures that all dangling statements are finalized.
Stmt#Exec is renamed in Stmt#Bind and a new Stmt#Exec method is introduced to #Bind and #Step.
Stmt#Bind uses native sqlite3_bind_x methods and failed if unsupported type.
Stmt#NamedBind can be used to bind by name.
Stmt#Next returns a (bool, os.Error) couple like Reader#Read.
Stmt#Scan uses native sqlite3_column_x methods.
Stmt#NamedScan is added. It's compliant with go-dbi.
Stmt#ScanByIndex/ScanByName are added to test NULL value.

Currently, the weak point of the binding is the Scan methods: The original implementation is using this strategy:

• convert the stored value to a []byte by calling sqlite3_column_blob,
• convert the bytes to the desired Go type with correct feedback in case of illegal conversion,
• but apparently no support for NULL value.

Using the native sqlite3_column_x implies:

• optimal conversion from the storage type to Go type (when they match),
• loosy conversion when types mismatch (select cast('M' as int); --> 0),
• NULL value can be returned only for **type, otherwise a default value (0, false, "") is returned.

SQLite logs (SQLITE_CONFIG_LOG) can be activated by:

• ConfigLog function
• or export SQLITE_LOG=1

Misc:
Conn#Exists
Conn#OneValue

Conn#OpenVfs
Conn#EnableFkey/IsFKeyEnabled
Conn#Changes/TotalChanges
Conn#LastInsertRowid
Conn#Interrupt
Conn#Begin/BeginTransaction(type)/Commit/Rollback
Conn#GetAutocommit
Conn#EnableLoadExtension/LoadExtension
Conn#IntegrityCheck

Stmt#Insert/ExecDml/Select/SelectOneRow
Stmt#BindParameterCount/BindParameterIndex(name)/BindParameterName(index)
Stmt#ClearBindings
Stmt#ColumnCount/ColumnNames/ColumnIndex(name)/ColumnName(index)/ColumnType(index)
Stmt#ReadOnly
Stmt#Busy

Blob:
ZeroBlobLength
Conn#NewBlobReader
Conn#NewBlobReadWriter

Meta:
Conn#Databases
Conn#Tables
Conn#Columns
Conn#ForeignKeys
Conn#Indexes/IndexColumns

Time:
JulianDay
JulianDayToUTC
JulianDayToLocalTime

Trace:
Conn#BusyHandler
Conn#Profile
Conn#ProgressHandler
Conn#SetAuthorizer
Conn#Trace
Stmt#Status

Hook:
Conn#CommitHook
Conn#RollbackHook
Conn#UpdateHook

Function:
Conn#CreateScalarFunction
Conn#CreateAggregateFunction

$ go test -test.bench .

BenchmarkValuesScan 500000  4658 ns/op
BenchmarkScan       500000   324 ns/op
BenchmarkNamedScan  200000  9221 ns/op

BenchmarkInsert       500000  6088 ns/op
BenchmarkNamedInsert  500000  6726 ns/op

BenchmarkDisabledCache   100000  19235 ns/op
BenchmarkEnabledCache   1000000   1133 ns/op

BenchmarkLike   1000000  2508 ns/op
BenchmarkHalf    500000  4811 ns/op
BenchmarkRegexp  500000  6170 ns/op