~ubuntu-branches/ubuntu/precise/mysql-5.1/precise

When the table is used later, the server reads into memory the information needed to decompress columns\&. This results in much better performance when accessing individual rows, because you only have to uncompress exactly one row\&.

.PP

MySQL uses

mmap()

when possible to perform memory mapping on compressed tables\&. If

mmap()

does not work, MySQL falls back to normal read/write file operations\&.

.PP

Please note the following:

.sp

.RS 4

.ie n \{\

\h'-04'\(bu\h'+03'\c

.\}

.el \{\

.sp -1

.IP \(bu 2.3

.\}

If the

\fBmysqld\fR

server was invoked with external locking disabled, it is not a good idea to invoke

\fBmyisampack\fR

if the table might be updated by the server during the packing process\&. It is safest to compress tables with the server stopped\&.

.RE

.sp

.RS 4

.ie n \{\

\h'-04'\(bu\h'+03'\c

.\}

.el \{\

.sp -1

.IP \(bu 2.3

.\}

After packing a table, it becomes read only\&. This is generally intended (such as when accessing packed tables on a CD)\&. Allowing writes to a packed table is on our TODO list, but with low priority\&.

.RE

.PP

Invoke

\fBmyisampack\fR

like this:

.sp

.if n \{\

.RS 4

.\}

.nf

shell> \fBmyisampack [\fR\fB\fIoptions\fR\fR\fB] \fR\fB\fIfile_name\fR\fR\fB \&.\&.\&.\fR

.fi

.if n \{\

.RE

.\}

.PP

Each file name argument should be the name of an index (\&.MYI) file\&. If you are not in the database directory, you should specify the path name to the file\&. It is permissible to omit the

\&.MYI

extension\&.

.PP

After you compress a table with

\fBmyisampack\fR, you should use

\fBmyisamchk \-rq\fR

to rebuild its indexes\&.

100

\fBmyisamchk\fR(1)\&.

101

.PP

102

\fBmyisampack\fR

103

supports the following options\&. It also reads option files and supports the options for processing them described at

104

Section\ \&4.2.3.3.1, \(lqCommand-Line Options that Affect Option-File Handling\(rq\&.

105

.sp

106

.RS 4

107

.ie n \{\

108

\h'-04'\(bu\h'+03'\c

109

.\}

110

.el \{\

111

.sp -1

112

.IP \(bu 2.3

113

.\}

114

.\" myisampack: help option

115

.\" help option: myisampack

116

\fB\-\-help\fR,

117

\fB\-?\fR

118

.sp

119

Display a help message and exit\&.

120

.RE

121

.sp

122

.RS 4

123

.ie n \{\

124

\h'-04'\(bu\h'+03'\c

125

.\}

126

.el \{\

127

.sp -1

128

.IP \(bu 2.3

129

.\}

130

.\" myisampack: backup option

131

.\" backup option: myisampack

132

\fB\-\-backup\fR,

133

\fB\-b\fR

134

.sp

135

Make a backup of each table\'s data file using the name

136

\fItbl_name\fR\&.OLD\&.

137

.RE

138

.sp

139

.RS 4

140

.ie n \{\

141

\h'-04'\(bu\h'+03'\c

142

.\}

143

.el \{\

144

.sp -1

145

.IP \(bu 2.3

146

.\}

147

.\" myisampack: character-sets-dir option

148

.\" character-sets-dir option: myisampack

149

\fB\-\-character\-sets\-dir=\fR\fB\fIpath\fR\fR

150

.sp

151

The directory where character sets are installed\&. See

152

Section\ \&9.5, \(lqCharacter Set Configuration\(rq\&.

153

.RE

154

.sp

155

.RS 4

156

.ie n \{\

157

\h'-04'\(bu\h'+03'\c

158

.\}

159

.el \{\

160

.sp -1

161

.IP \(bu 2.3

162

.\}

163

.\" myisampack: debug option

164

.\" debug option: myisampack

165

\fB\-\-debug[=\fR\fB\fIdebug_options\fR\fR\fB]\fR,

166

\fB\-# [\fR\fB\fIdebug_options\fR\fR\fB]\fR

167

.sp

168

Write a debugging log\&. A typical

169

\fIdebug_options\fR

170

string is

171

\'d:t:o,\fIfile_name\fR\'\&. The default is

172

\'d:t:o\'\&.

173

.RE

174

.sp

175

.RS 4

176

.ie n \{\

177

\h'-04'\(bu\h'+03'\c

178

.\}

179

.el \{\

180

.sp -1

181

.IP \(bu 2.3

182

.\}

183

.\" myisampack: force option

184

.\" force option: myisampack

185

\fB\-\-force\fR,

186

\fB\-f\fR

187

.sp

188

Produce a packed table even if it becomes larger than the original or if the intermediate file from an earlier invocation of

189

\fBmyisampack\fR

190

exists\&. (\fBmyisampack\fR

191

creates an intermediate file named

192

\fItbl_name\fR\&.TMD

193

in the database directory while it compresses the table\&. If you kill

194

\fBmyisampack\fR, the

195

\&.TMD

196

file might not be deleted\&.) Normally,

197

\fBmyisampack\fR

198

exits with an error if it finds that

199

\fItbl_name\fR\&.TMD

200

exists\&. With

201

\fB\-\-force\fR,

202

\fBmyisampack\fR

203

packs the table anyway\&.

204

.RE

205

.sp

206

.RS 4

207

.ie n \{\

208

\h'-04'\(bu\h'+03'\c

209

.\}

210

.el \{\

211

.sp -1

212

.IP \(bu 2.3

213

.\}

214

.\" myisampack: join option

215

.\" join option: myisampack

216

\fB\-\-join=\fR\fB\fIbig_tbl_name\fR\fR,

217

\fB\-j \fR\fB\fIbig_tbl_name\fR\fR

218

.sp

219

Join all tables named on the command line into a single packed table

220

\fIbig_tbl_name\fR\&. All tables that are to be combined

221

\fImust\fR

222

have identical structure (same column names and types, same indexes, and so forth)\&.

223

.sp

224

\fIbig_tbl_name\fR

225

must not exist prior to the join operation\&. All source tables named on the command line to be merged into

226

\fIbig_tbl_name\fR

227

must exist\&. The source tables are read for the join operation but not modified\&. The join operation does not create a

228

\&.frm

229

file for

230

\fIbig_tbl_name\fR, so after the join operation finishes, copy the

231

\&.frm

232

file from one of the source tables and name it

233

\fIbig_tbl_name\fR\&.frm\&.

234

.RE

235

.sp

236

.RS 4

237

.ie n \{\

238

\h'-04'\(bu\h'+03'\c

239

.\}

240

.el \{\

241

.sp -1

242

.IP \(bu 2.3

243

.\}

244

.\" myisampack: silent option

245

.\" silent option: myisampack

246

\fB\-\-silent\fR,

247

\fB\-s\fR

248

.sp

249

Silent mode\&. Write output only when errors occur\&.

250

.RE

251

.sp

252

.RS 4

253

.ie n \{\

254

\h'-04'\(bu\h'+03'\c

255

.\}

256

.el \{\

257

.sp -1

258

.IP \(bu 2.3

259

.\}

260

.\" myisampack: test option

261

.\" test option: myisampack

262

\fB\-\-test\fR,

263

\fB\-t\fR

264

.sp

265

Do not actually pack the table, just test packing it\&.

266

.RE

267

.sp

268

.RS 4

269

.ie n \{\

270

\h'-04'\(bu\h'+03'\c

271

.\}

272

.el \{\

273

.sp -1

274

.IP \(bu 2.3

275

.\}

276

.\" myisampack: tmpdir option

277

.\" tmpdir option: myisampack

278

\fB\-\-tmpdir=\fR\fB\fIpath\fR\fR,

279

\fB\-T \fR\fB\fIpath\fR\fR

280

.sp

281

Use the named directory as the location where

282

\fBmyisampack\fR

283

creates temporary files\&.

284

.RE

285

.sp

286

.RS 4

287

.ie n \{\

288

\h'-04'\(bu\h'+03'\c

289

.\}

290

.el \{\

291

.sp -1

292

.IP \(bu 2.3

293

.\}

294

.\" myisampack: verbose option

295

.\" verbose option: myisampack

296

\fB\-\-verbose\fR,

297

\fB\-v\fR

298

.sp

299

Verbose mode\&. Write information about the progress of the packing operation and its result\&.

300

.RE

301

.sp

302

.RS 4

303

.ie n \{\

304

\h'-04'\(bu\h'+03'\c

305

.\}

306

.el \{\

307

.sp -1

308

.IP \(bu 2.3

309

.\}

310

.\" myisampack: version option

311

.\" version option: myisampack

312

\fB\-\-version\fR,

313

\fB\-V\fR

314

.sp

315

Display version information and exit\&.

316

.RE

317

.sp

318

.RS 4

319

.ie n \{\

320

\h'-04'\(bu\h'+03'\c

321

.\}

322

.el \{\

323

.sp -1

324

.IP \(bu 2.3

325

.\}

326

.\" myisampack: wait option

327

.\" wait option: myisampack

328

\fB\-\-wait\fR,

329

\fB\-w\fR

330

.sp

331

Wait and retry if the table is in use\&. If the

332

\fBmysqld\fR

333

server was invoked with external locking disabled, it is not a good idea to invoke

334

\fBmyisampack\fR

335

if the table might be updated by the server during the packing process\&.

336

.RE

337

.\" examples: compressed tables

338

.PP

339

The following sequence of commands illustrates a typical table compression session:

340

.sp

341

.if n \{\

342

.RS 4

343

.\}

344

.nf

345

shell> \fBls \-l station\&.*\fR

346

\-rw\-rw\-r\-\- 1 monty my 994128 Apr 17 19:00 station\&.MYD

347

\-rw\-rw\-r\-\- 1 monty my 53248 Apr 17 19:00 station\&.MYI

348

\-rw\-rw\-r\-\- 1 monty my 5767 Apr 17 19:00 station\&.frm

349

shell> \fBmyisamchk \-dvv station\fR

350

MyISAM file: station

351

Isam\-version: 2

352

Creation time: 1996\-03\-13 10:08:58

353

Recover time: 1997\-02\-02 3:06:43

354

Data records: 1192 Deleted blocks: 0

355

Datafile parts: 1192 Deleted data: 0

356

Datafile pointer (bytes): 2 Keyfile pointer (bytes): 2

357

Max datafile length: 54657023 Max keyfile length: 33554431

358

Recordlength: 834

359

Record format: Fixed length

360

table description:

361

Key Start Len Index Type Root Blocksize Rec/key

362

1 2 4 unique unsigned long 1024 1024 1

363

2 32 30 multip\&. text 10240 1024 1

364

Field Start Length Type

365

1 1 1

366

2 2 4

367

3 6 4

368

4 10 1

369

5 11 20

370

6 31 1

371

7 32 30

372

8 62 35

373

9 97 35

374

10 132 35

375

11 167 4

376

12 171 16

377

13 187 35

378

14 222 4

379

15 226 16

380

16 242 20

381

17 262 20

382

18 282 20

383

19 302 30

384

20 332 4

385

21 336 4

386

22 340 1

387

23 341 8

388

24 349 8

389

25 357 8

390

26 365 2

391

27 367 2

392

28 369 4

393

29 373 4

394

30 377 1

395

31 378 2

396

32 380 8

397

33 388 4

398

34 392 4

399

35 396 4

400

36 400 4

401

37 404 1

402

38 405 4

403

39 409 4

404

40 413 4

405

41 417 4

406

42 421 4

407

43 425 4

408

44 429 20

409

45 449 30

410

46 479 1

411

47 480 1

412

48 481 79

413

49 560 79

414

50 639 79

415

51 718 79

416

52 797 8

417

53 805 1

418

54 806 1

419

55 807 20

420

56 827 4

421

57 831 4

422

shell> \fBmyisampack station\&.MYI\fR

423

Compressing station\&.MYI: (1192 records)

424

\- Calculating statistics

425

normal: 20 empty\-space: 16 empty\-zero: 12 empty\-fill: 11

426

pre\-space: 0 end\-space: 12 table\-lookups: 5 zero: 7

427

Original trees: 57 After join: 17

428

\- Compressing file

429

87\&.14%

430

Remember to run myisamchk \-rq on compressed tables

431

shell> \fBls \-l station\&.*\fR

432

\-rw\-rw\-r\-\- 1 monty my 127874 Apr 17 19:00 station\&.MYD

433

\-rw\-rw\-r\-\- 1 monty my 55296 Apr 17 19:04 station\&.MYI

434

\-rw\-rw\-r\-\- 1 monty my 5767 Apr 17 19:00 station\&.frm

435

shell> \fBmyisamchk \-dvv station\fR

436

MyISAM file: station

437

Isam\-version: 2

438

Creation time: 1996\-03\-13 10:08:58

439

Recover time: 1997\-04\-17 19:04:26

440

Data records: 1192 Deleted blocks: 0

441

Datafile parts: 1192 Deleted data: 0

442

Datafile pointer (bytes): 3 Keyfile pointer (bytes): 1

443

Max datafile length: 16777215 Max keyfile length: 131071

444

Recordlength: 834

445

Record format: Compressed

446

table description:

447

Key Start Len Index Type Root Blocksize Rec/key

448

1 2 4 unique unsigned long 10240 1024 1

449

2 32 30 multip\&. text 54272 1024 1

450

Field Start Length Type Huff tree Bits

451

1 1 1 constant 1 0

452

2 2 4 zerofill(1) 2 9

453

3 6 4 no zeros, zerofill(1) 2 9

454

4 10 1 3 9

455

5 11 20 table\-lookup 4 0

456

6 31 1 3 9

457

7 32 30 no endspace, not_always 5 9

458

8 62 35 no endspace, not_always, no empty 6 9

459

9 97 35 no empty 7 9

460

10 132 35 no endspace, not_always, no empty 6 9

461

11 167 4 zerofill(1) 2 9

462

12 171 16 no endspace, not_always, no empty 5 9

463

13 187 35 no endspace, not_always, no empty 6 9

464

14 222 4 zerofill(1) 2 9

465

15 226 16 no endspace, not_always, no empty 5 9

466

16 242 20 no endspace, not_always 8 9

467

17 262 20 no endspace, no empty 8 9

468

18 282 20 no endspace, no empty 5 9

469

19 302 30 no endspace, no empty 6 9

470

20 332 4 always zero 2 9

471

21 336 4 always zero 2 9

472

22 340 1 3 9

473

23 341 8 table\-lookup 9 0

474

24 349 8 table\-lookup 10 0

475

25 357 8 always zero 2 9

476

26 365 2 2 9

477

27 367 2 no zeros, zerofill(1) 2 9

478

28 369 4 no zeros, zerofill(1) 2 9

479

29 373 4 table\-lookup 11 0

480

30 377 1 3 9

481

31 378 2 no zeros, zerofill(1) 2 9

482

32 380 8 no zeros 2 9

483

33 388 4 always zero 2 9

484

34 392 4 table\-lookup 12 0

485

35 396 4 no zeros, zerofill(1) 13 9

486

36 400 4 no zeros, zerofill(1) 2 9

487

37 404 1 2 9

488

38 405 4 no zeros 2 9

489

39 409 4 always zero 2 9

490

40 413 4 no zeros 2 9

491

41 417 4 always zero 2 9

492

42 421 4 no zeros 2 9

493

43 425 4 always zero 2 9

494

44 429 20 no empty 3 9

495

45 449 30 no empty 3 9

496

46 479 1 14 4

497

47 480 1 14 4

498

48 481 79 no endspace, no empty 15 9

499

49 560 79 no empty 2 9

500

50 639 79 no empty 2 9

501

51 718 79 no endspace 16 9

502

52 797 8 no empty 2 9

503

53 805 1 17 1

504

54 806 1 3 9

505

55 807 20 no empty 3 9

506

56 827 4 no zeros, zerofill(2) 2 9

507

57 831 4 no zeros, zerofill(1) 2 9

508

.fi

509

.if n \{\

510

.RE

511

.\}

512

.PP

513

\fBmyisampack\fR

514

displays the following kinds of information:

515

.sp

516

.RS 4

517

.ie n \{\

518

\h'-04'\(bu\h'+03'\c

519

.\}

520

.el \{\

521

.sp -1

522

.IP \(bu 2.3

523

.\}

524

normal

525

.sp

526

The number of columns for which no extra packing is used\&.

527

.RE

528

.sp

529

.RS 4

530

.ie n \{\

531

\h'-04'\(bu\h'+03'\c

532

.\}

533

.el \{\

534

.sp -1

535

.IP \(bu 2.3

536

.\}

537

empty\-space

538

.sp

539

The number of columns containing values that are only spaces\&. These occupy one bit\&.

540

.RE

541

.sp

542

.RS 4

543

.ie n \{\

544

\h'-04'\(bu\h'+03'\c

545

.\}

546

.el \{\

547

.sp -1

548

.IP \(bu 2.3

549

.\}

550

empty\-zero

551

.sp

552

The number of columns containing values that are only binary zeros\&. These occupy one bit\&.

553

.RE

554

.sp

555

.RS 4

556

.ie n \{\

557

\h'-04'\(bu\h'+03'\c

558

.\}

559

.el \{\

560

.sp -1

561

.IP \(bu 2.3

562

.\}

563

empty\-fill

564

.sp

565

The number of integer columns that do not occupy the full byte range of their type\&. These are changed to a smaller type\&. For example, a

566

BIGINT

567

column (eight bytes) can be stored as a

568

TINYINT

569

column (one byte) if all its values are in the range from

570

\-128

571

572

127\&.

573

.RE

574

.sp

575

.RS 4

576

.ie n \{\

577

\h'-04'\(bu\h'+03'\c

578

.\}

579

.el \{\

580

.sp -1

581

.IP \(bu 2.3

582

.\}

583

pre\-space

584

.sp

585

The number of decimal columns that are stored with leading spaces\&. In this case, each value contains a count for the number of leading spaces\&.

586

.RE

587

.sp

588

.RS 4

589

.ie n \{\

590

\h'-04'\(bu\h'+03'\c

591

.\}

592

.el \{\

593

.sp -1

594

.IP \(bu 2.3

595

.\}

596

end\-space

597

.sp

598

The number of columns that have a lot of trailing spaces\&. In this case, each value contains a count for the number of trailing spaces\&.

599

.RE

600

.sp

601

.RS 4

602

.ie n \{\

603

\h'-04'\(bu\h'+03'\c

604

.\}

605

.el \{\

606

.sp -1

607

.IP \(bu 2.3

608

.\}

609

table\-lookup

610

.sp

611

The column had only a small number of different values, which were converted to an

612

ENUM

613

before Huffman compression\&.

614

.RE

615

.sp

616

.RS 4

617

.ie n \{\

618

\h'-04'\(bu\h'+03'\c

619

.\}

620

.el \{\

621

.sp -1

622

.IP \(bu 2.3

623

.\}

624

zero

625

.sp

626

The number of columns for which all values are zero\&.

627

.RE

628

.sp

629

.RS 4

630

.ie n \{\

631

\h'-04'\(bu\h'+03'\c

632

.\}

633

.el \{\

634

.sp -1

635

.IP \(bu 2.3

636

.\}

637

Original trees

638

.sp

639

The initial number of Huffman trees\&.

640

.RE

641

.sp

642

.RS 4

643

.ie n \{\

644

\h'-04'\(bu\h'+03'\c

645

.\}

646

.el \{\

647

.sp -1

648

.IP \(bu 2.3

649

.\}

650

After join

651

.sp

652

The number of distinct Huffman trees left after joining trees to save some header space\&.

653

.RE

654

.PP

655

After a table has been compressed, the

656

Field

657

lines displayed by

658

\fBmyisamchk \-dvv\fR

659

include additional information about each column:

660

.sp

661

.RS 4

662

.ie n \{\

663

\h'-04'\(bu\h'+03'\c

664

.\}

665

.el \{\

666

.sp -1

667

.IP \(bu 2.3

668

.\}

669

Type

670

.sp

671

The data type\&. The value may contain any of the following descriptors:

672

.sp

673

.RS 4

674

.ie n \{\

675

\h'-04'\(bu\h'+03'\c

676

.\}

677

.el \{\

678

.sp -1

679

.IP \(bu 2.3

680

.\}

681

constant

682

.sp

683

All rows have the same value\&.

684

.RE

685

.sp

686

.RS 4

687

.ie n \{\

688

\h'-04'\(bu\h'+03'\c

689

.\}

690

.el \{\

691

.sp -1

692

.IP \(bu 2.3

693

.\}

694

no endspace

695

.sp

696

Do not store endspace\&.

697

.RE

698

.sp

699

.RS 4

700

.ie n \{\

701

\h'-04'\(bu\h'+03'\c

702

.\}

703

.el \{\

704

.sp -1

705

.IP \(bu 2.3

706

.\}

707

no endspace, not_always

708

.sp

709

Do not store endspace and do not do endspace compression for all values\&.

710

.RE

711

.sp

712

.RS 4

713

.ie n \{\

714

\h'-04'\(bu\h'+03'\c

715

.\}

716

.el \{\

717

.sp -1

718

.IP \(bu 2.3

719

.\}

720

no endspace, no empty

721

.sp

722

Do not store endspace\&. Do not store empty values\&.

723

.RE

724

.sp

725

.RS 4

726

.ie n \{\

727

\h'-04'\(bu\h'+03'\c

728

.\}

729

.el \{\

730

.sp -1

731

.IP \(bu 2.3

732

.\}

733

table\-lookup

734

.sp

735

The column was converted to an

736

ENUM\&.

737

.RE

738

.sp

739

.RS 4

740

.ie n \{\

741

\h'-04'\(bu\h'+03'\c

742

.\}

743

.el \{\

744

.sp -1

745

.IP \(bu 2.3

746

.\}

747

zerofill(\fIN\fR)

748

.sp

749

The most significant

750

\fIN\fR

751

bytes in the value are always 0 and are not stored\&.

752

.RE

753

.sp

754

.RS 4

755

.ie n \{\

756

\h'-04'\(bu\h'+03'\c

757

.\}

758

.el \{\

759

.sp -1

760

.IP \(bu 2.3

761

.\}

762

no zeros

763

.sp

764

Do not store zeros\&.

765

.RE

766

.sp

767

.RS 4

768

.ie n \{\

769

\h'-04'\(bu\h'+03'\c

770

.\}

771

.el \{\

772

.sp -1

773

.IP \(bu 2.3

774

.\}

775

always zero

776

.sp

777

Zero values are stored using one bit\&.

778

.RE

779

.RE

780

.sp

781

.RS 4

782

.ie n \{\

783

\h'-04'\(bu\h'+03'\c

784

.\}

785

.el \{\

786

.sp -1

787

.IP \(bu 2.3

788

.\}

789

Huff tree

790

.sp

791

The number of the Huffman tree associated with the column\&.

792

.RE

793

.sp

794

.RS 4

795

.ie n \{\

796

\h'-04'\(bu\h'+03'\c

797

.\}

798

.el \{\

799

.sp -1

800

.IP \(bu 2.3

801

.\}

802

Bits

803

.sp

804

The number of bits used in the Huffman tree\&.

805

.RE

806

.PP

807

After you run

808

\fBmyisampack\fR, you must run

809

\fBmyisamchk\fR

810

to re\-create any indexes\&. At this time, you can also sort the index blocks and create statistics needed for the MySQL optimizer to work more efficiently:

811

.sp

812

.if n \{\

813

.RS 4

814

.\}

815

.nf

816

shell> \fBmyisamchk \-rq \-\-sort\-index \-\-analyze \fR\fB\fItbl_name\fR\fR\fB\&.MYI\fR

817

.fi

818

.if n \{\

819

.RE

820

.\}

821

.PP

822

After you have installed the packed table into the MySQL database directory, you should execute

823

\fBmysqladmin flush\-tables\fR

824

to force

825

\fBmysqld\fR

826

to start using the new table\&.

827

.PP

828

To unpack a packed table, use the

829

\fB\-\-unpack\fR

830

option to

831

\fBmyisamchk\fR\&.

832

.SH "COPYRIGHT"

833

.br

834

.PP

835

836

.PP

837

This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License.

838

.PP

839

This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

840

.PP

841

You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/.

842

.sp

843

.SH "SEE ALSO"

844

For more information, please refer to the MySQL Reference Manual,

845

which may already be installed locally and which is also available

846

online at http://dev.mysql.com/doc/.

847

.SH AUTHOR

848

Sun Microsystems, Inc. (http://www.mysql.com/).

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