Application Programming and SQL Guide - Kmlinux

More documents

Recommendations

Info

| xiv Application Programming and SQL Guide Star join (JOIN_TYPE=’S’) . . . . . . . . . . . . . . . . . . . 769 Interpreting data prefetch . . . . . . . . . . . . . . . . . . . . . 776 Sequential prefetch (PREFETCH=S) . . . . . . . . . . . . . . . 776 Dynamic prefetch (PREFETCH=D) . . . . . . . . . . . . . . . . 777 List prefetch (PREFETCH=L) . . . . . . . . . . . . . . . . . . 777 Sequential detection at execution time . . . . . . . . . . . . . . . 778 Determining sort activity . . . . . . . . . . . . . . . . . . . . . 780 Sorts of data . . . . . . . . . . . . . . . . . . . . . . . . 780 Sorts of RIDs . . . . . . . . . . . . . . . . . . . . . . . . 781 The effect of sorts on OPEN CURSOR . . . . . . . . . . . . . . 781 Processing for views and nested table expressions . . . . . . . . . . . 782 Merge . . . . . . . . . . . . . . . . . . . . . . . . . . . 782 Materialization . . . . . . . . . . . . . . . . . . . . . . . . 783 Using EXPLAIN to determine when materialization occurs . . . . . . . 785 Using EXPLAIN to determine UNION activity and query rewrite . . . . . 786 Performance of merge versus materialization . . . . . . . . . . . . 787 Estimating a statement’s cost . . . . . . . . . . . . . . . . . . . 788 Creating a statement table . . . . . . . . . . . . . . . . . . . 789 Populating and maintaining a statement table . . . . . . . . . . . . 791 Retrieving rows from a statement table . . . . . . . . . . . . . . 791 The implications of cost categories . . . . . . . . . . . . . . . . 791 Chapter 28. Parallel operations and query performance . . . . . . . . 793 Comparing the methods of parallelism . . . . . . . . . . . . . . . . 793 Enabling parallel processing . . . . . . . . . . . . . . . . . . . 796 When parallelism is not used . . . . . . . . . . . . . . . . . . . 797 Interpreting EXPLAIN output . . . . . . . . . . . . . . . . . . . 798 A method for examining PLAN_TABLE columns for parallelism . . . . . . 798 PLAN_TABLE examples showing parallelism . . . . . . . . . . . . 798 Tuning parallel processing . . . . . . . . . . . . . . . . . . . . 800 Disabling query parallelism . . . . . . . . . . . . . . . . . . . . 801 Chapter 29. Programming for the Interactive System Productivity Facility 803 Using ISPF and the DSN command processor . . . . . . . . . . . . . 803 Invoking a single SQL program through ISPF and DSN . . . . . . . . . 804 Invoking multiple SQL programs through ISPF and DSN . . . . . . . . . 805 Invoking multiple SQL programs through ISPF and CAF . . . . . . . . . 805 Chapter 30. Programming for the call attachment facility . . . . . . . 807 CAF capabilities and requirements . . . . . . . . . . . . . . . . . 807 CAF capabilities . . . . . . . . . . . . . . . . . . . . . . . 807 CAF requirements . . . . . . . . . . . . . . . . . . . . . . 809 How to use CAF . . . . . . . . . . . . . . . . . . . . . . . . 810 Summary of connection functions . . . . . . . . . . . . . . . . 812 Accessing the CAF language interface . . . . . . . . . . . . . . . 813 General properties of CAF connections . . . . . . . . . . . . . . 814 CAF function descriptions . . . . . . . . . . . . . . . . . . . 815 CONNECT: Syntax and usage . . . . . . . . . . . . . . . . . . 817 OPEN: Syntax and usage . . . . . . . . . . . . . . . . . . . 821 CLOSE: Syntax and usage . . . . . . . . . . . . . . . . . . . 823 DISCONNECT: Syntax and usage . . . . . . . . . . . . . . . . 824 TRANSLATE: Syntax and usage . . . . . . . . . . . . . . . . . 826 Summary of CAF behavior . . . . . . . . . . . . . . . . . . . 827 Sample scenarios . . . . . . . . . . . . . . . . . . . . . . . 828 A single task with implicit connections . . . . . . . . . . . . . . . 828 A single task with explicit connections . . . . . . . . . . . . . . . 829
| | Several tasks . . . . . . . . . . . . . . . . . . . . . . . . 829 Exit routines from your application . . . . . . . . . . . . . . . . . 829 Attention exit routines . . . . . . . . . . . . . . . . . . . . . 829 Recovery routines . . . . . . . . . . . . . . . . . . . . . . 830 Error messages and dsntrace . . . . . . . . . . . . . . . . . . . 830 CAF return codes and reason codes . . . . . . . . . . . . . . . . 830 Program examples for CAF . . . . . . . . . . . . . . . . . . . . 831 Sample JCL for using CAF . . . . . . . . . . . . . . . . . . . 831 Sample assembler code for using CAF . . . . . . . . . . . . . . 832 Loading and deleting the CAF language interface . . . . . . . . . . . 832 Connecting to DB2 for CAF . . . . . . . . . . . . . . . . . . . 832 Checking return codes and reason codes for CAF . . . . . . . . . . 834 Using dummy entry point DSNHLI for CAF . . . . . . . . . . . . . 836 Variable declarations for CAF . . . . . . . . . . . . . . . . . . 837 Chapter 31. Programming for the Resource Recovery Services attachment facility . . . . . . . . . . . . . . . . . . . . . . 839 RRSAF capabilities and requirements . . . . . . . . . . . . . . . . 839 RRSAF capabilities . . . . . . . . . . . . . . . . . . . . . . 839 RRSAF requirements . . . . . . . . . . . . . . . . . . . . . 840 How to use RRSAF . . . . . . . . . . . . . . . . . . . . . . . 842 Summary of connection functions . . . . . . . . . . . . . . . . 842 Implicit connections . . . . . . . . . . . . . . . . . . . . . . 843 Accessing the RRSAF language interface . . . . . . . . . . . . . 844 General properties of RRSAF connections . . . . . . . . . . . . . 846 Summary of RRSAF behavior . . . . . . . . . . . . . . . . . . 848 RRSAF function descriptions . . . . . . . . . . . . . . . . . . . 849 Register conventions . . . . . . . . . . . . . . . . . . . . . 849 Parameter conventions for function calls . . . . . . . . . . . . . . 850 IDENTIFY: Syntax and usage . . . . . . . . . . . . . . . . . . 850 SWITCH TO: Syntax and usage . . . . . . . . . . . . . . . . . 853 SIGNON: Syntax and usage . . . . . . . . . . . . . . . . . . 855 AUTH SIGNON: Syntax and usage . . . . . . . . . . . . . . . . 858 CONTEXT SIGNON: Syntax and usage . . . . . . . . . . . . . . 861 SET_ID: Syntax and usage . . . . . . . . . . . . . . . . . . . 865 SET_CLIENT_ID: Syntax and usage . . . . . . . . . . . . . . . 866 CREATE THREAD: Syntax and usage . . . . . . . . . . . . . . . 868 TERMINATE THREAD: Syntax and usage . . . . . . . . . . . . . 871 TERMINATE IDENTIFY: Syntax and usage . . . . . . . . . . . . . 872 TRANSLATE: Syntax and usage . . . . . . . . . . . . . . . . . 873 RRSAF connection examples . . . . . . . . . . . . . . . . . . . 874 Example of a single task . . . . . . . . . . . . . . . . . . . . 875 Example of multiple tasks . . . . . . . . . . . . . . . . . . . 875 Example of calling SIGNON to reuse a DB2 thread . . . . . . . . . . 875 Example of switching DB2 threads between tasks . . . . . . . . . . 875 RRSAF return codes and reason codes . . . . . . . . . . . . . . . 876 Program examples for RRSAF . . . . . . . . . . . . . . . . . . . 877 Sample JCL for using RRSAF . . . . . . . . . . . . . . . . . . 877 Loading and deleting the RRSAF language interface . . . . . . . . . 877 Using dummy entry point DSNHLI for RRSAF . . . . . . . . . . . . 877 Connecting to DB2 for RRSAF . . . . . . . . . . . . . . . . . 878 Chapter 32. CICS-specific programming techniques . . . . . . . . . 881 Controlling the CICS attachment facility from an application . . . . . . . . 881 Improving thread reuse . . . . . . . . . . . . . . . . . . . . . 881 Detecting whether the CICS attachment facility is operational . . . . . . . 881 Contents xv
Page 1: DB2 ® DB2 Universal Database for z
Page 4 and 5: Note Before using this information
Page 6 and 7: # | # | Deleting rows: DELETE . . .
Page 8 and 9: | | | | vi Application Programming
Page 10 and 11: Defining a user-defined function .
Page 12 and 13: Step 4: Run the application . . . .
Page 14 and 15: | | | | xii Application Programming
Page 18 and 19: | | | | | | | | # # # # # # | Chapt
Page 20 and 21: # # # # # # # xviii Application Pro
Page 22 and 23: RACF ® How to read the syntax diag
Page 24 and 25: xxii Application Programming and SQ
Page 26 and 27: | | | | | | | | | | | | | | xxiv Ap
Page 28 and 29: | | | | | # | # 2 Application Progr
Page 30 and 31: Data types When you create a DB2 ta
Page 32 and 33: DEPTNO DEPTNAME MGRNO ADMRDEPT LOCA
Page 34 and 35: | | | | | column list of CREATE VIE
Page 36 and 37: Specifying the sort key The order o
Page 38 and 39: # Subjecting groups to conditions:
Page 40 and 41: | | | | | | | | | | | | | | | | | |
Page 42 and 43: | | | | | | | | | | | | | | | | | |
Page 44 and 45: Finding information in the DB2 cata
Page 46 and 47: v UNIQUE, when the value for each r
Page 48 and 49: Temporary tables can also return re
Page 50 and 51: If the base table, created temporar
Page 52 and 53: When a program accesses the data de
Page 54 and 55: Inserting a single row You can use
Page 56 and 57: v You can write an application prog
Page 58 and 59: | | | | | | | | | | | | | | | | | |
Page 60 and 61: | | | | | | | | | | | | | | | | | |
Page 62 and 63: | | | | | | | | | | | | | | | Examp
Page 64 and 65: Deleting every row in a table The D
Page 66 and 67:
Inner join 40 Application Programmi
Page 68 and 69:
Left outer join 42 Application Prog
Page 70 and 71:
SQL rules for statements containing
Page 72 and 73:
000170 YOSHIMURA MANUFACTURING SYST
Page 74 and 75:
A table function or a table express
Page 76 and 77:
SELECT EMPNO, LASTNAME, COMM FROM D
Page 78 and 79:
IN keyword If a subquery that retur
Page 80 and 81:
SELECT EMPNO, LASTNAME, WORKDEPT, E
Page 82 and 83:
| | | 56 Application Programming an
Page 84 and 85:
58 Application Programming and SQL
Page 86 and 87:
| | | # # # # Changing SPUFI defaul
Page 88 and 89:
# # # # # # # # # # # # # # # # # #
Page 90 and 91:
| | | | | # # # # # # # # # # The r
Page 92 and 93:
DSNESP04 SQL STATEMENT RESOURCE LIM
Page 94 and 95:
than the value you choose for field
Page 96 and 97:
| | | | 70 Application Programming
Page 98 and 99:
| | | | | | | | | | | | | | | | | 7
Page 100 and 101:
v DCLGEN — Chapter 8, “Generati
Page 102 and 103:
| | | | v Insert null values in col
Page 104 and 105:
| | | | | | | | | | | | | | | | You
Page 106 and 107:
| | variable and its indicator vari
Page 108 and 109:
| | | | | | | | | | | | | | | | | |
Page 110 and 111:
| | | | | | | | | | | | | | | | | |
Page 112 and 113:
Page 114 and 115:
- SQLWARN5 contains a character val
Page 116 and 117:
| | | | | | | | | | | | | | | | | |
Page 118 and 119:
| | | | | | | | | | | | | | | | | |
Page 120 and 121:
| Table 5. Data types for GET DIAGN
Page 122 and 123:
DSNTIAR places up to 10 lines in th
Page 124 and 125:
Page 126 and 127:
| | | | | | 100 Application Program
Page 128 and 129:
IF SQLCODE = 100 GO TO DATA-NOT-FOU
Page 130 and 131:
| | | | | | | | | | | | | | | | | |
Page 132 and 133:
| | | | | | | | | | | | | | | | | |
Page 134 and 135:
| | | | | | | | | | | | | | | | | |
Page 136 and 137:
Page 138 and 139:
| | | | | | | | | | | | | | | | | |
Page 140 and 141:
| | | | | | | | | | | | | | | | | |
Page 142 and 143:
Figure 15. Values for COL1 of table
Page 144 and 145:
| | | | Figure 18. Removing an upda
Page 146 and 147:
FROM DSN8810.EMP WHERE WORKDEPT <
Page 148 and 149:
***********************************
Page 150 and 151:
| | | | | | | | | | | | | | | | | |
Page 152 and 153:
Page 154 and 155:
| | | DSNEDP01 DCLGEN SSID: DSN ===
Page 156 and 157:
Table 10. Declarations generated by
Page 158 and 159:
Page 160 and 161:
Page 162 and 163:
Assembler If you specify STDSQL(YES
Page 164 and 165:
Assembler 138 Application Programmi
Page 166 and 167:
| | | Assembler ►► variable-nam
Page 168 and 169:
Assembler ►► variable-name SQL
Page 170 and 171:
Assembler Table 12. SQL data types
Page 172 and 173:
Assembler Overflow: Be careful of o
Page 174 and 175:
| | | | | Assembler Handling SQL er
Page 176 and 177:
C Whether you define the SQLCODE or
Page 178 and 179:
| | | | | | | | | | | C v Do not us
Page 180 and 181:
| | | | | | | C ►► auto extern
Page 182 and 183:
| | | | | | | C ►► auto extern
Page 184 and 185:
| | C ►► ► ▼ , auto extern
Page 186 and 187:
| | | | | | | | | | | | | | | | | |
Page 188 and 189:
| | | | | | | | | | | | | | | | | |
Page 190 and 191:
| | | | | | | | | | | | | | | | | |
Page 192 and 193:
| | C ►► struct tag ► char un
Page 194 and 195:
| C Table 13. SQL data types the pr
Page 196 and 197:
| | | | | | | C Table 14. SQL data
Page 198 and 199:
C In C, a real (floating-point) con
Page 200 and 201:
| | | | | | C ►► auto extern st
Page 202 and 203:
C Examples of calling DSNTIAR from
Page 204 and 205:
COBOL Unlike the SQLCA, a program c
Page 206 and 207:
COBOL 180 Application Programming a
Page 208 and 209:
| | | | | | | | | | | | | | | | | |
Page 210 and 211:
| | | | COBOL ►► ► 01 77 leve
Page 212 and 213:
COBOL ►► 01 77 level-1 Figure 6
Page 214 and 215:
COBOL ►► 01 variable-name Figur
Page 216 and 217:
| | | | | | | | | | | | | | | | | |
Page 218 and 219:
| | | | | | | | | | | | | | | | | |
Page 220 and 221:
| | | | | | | | | | | | | | | | | |
Page 222 and 223:
COBOL ►► level-1 ► ▼ level-
Page 224 and 225:
COBOL ►► ► ►► ► 49 VALU
Page 226 and 227:
# # # COBOL 3. For elements within
Page 228 and 229:
COBOL Table 17. SQL data types mapp
Page 230 and 231:
COBOL Special purpose COBOL data ty
Page 232 and 233:
| | | | | COBOL Using indicator var
Page 234 and 235:
COBOL DSNTIAR syntax CALL ’DSNTIA
Page 236 and 237:
COBOL Rules for host variables: You
Page 238 and 239:
FORTRAN SQL on one line. The SQL ex
Page 240 and 241:
FORTRAN ►► INTEGER*2 *4 INTEGER
Page 242 and 243:
FORTRAN Table 19. SQL data types ma
Page 244 and 245:
FORTRAN v Character data types are
Page 246 and 247:
FORTRAN the library DSN8810.SDSNSAM
Page 248 and 249:
PL/I EXEC SQL INCLUDE member-name;
Page 250 and 251:
| | | | | | | | | | | | | | | | | |
Page 252 and 253:
PL/I ►► ► DECLARE DCL variabl
Page 254 and 255:
| | | | | | | | | | | | | | | | | |
Page 256 and 257:
| | | | | | | PL/I ►► DCL DECLA
Page 258 and 259:
PL/I Table 20. SQL data types the p
Page 260 and 261:
| | | | PL/I Table 21. SQL data typ
Page 262 and 263:
| | | | | | | PL/I - Use a SET assi
Page 264 and 265:
PL/I sqlca An SQL communication are
Page 266 and 267:
REXX See Appendix D of DB2 SQL Refe
Page 268 and 269:
REXX Embedding SQL statements in a
Page 270 and 271:
REXX Using cursors and statement na
Page 272 and 273:
REXX Because the data that is assig
Page 274 and 275:
REXX Using indicator variables When
Page 276 and 277:
REXX 250 Application Programming an
Page 278 and 279:
v A check constraint that contradic
Page 280 and 281:
In some cases, using a timestamp as
Page 282 and 283:
v A view that can be updated that i
Page 284 and 285:
| | | | | | | | | | | | | | | | | |
Page 286 and 287:
Page 288 and 289:
| | | | | | | | | | | | | | | | | |
Page 290 and 291:
| | | | | | | | | | | | | | | | | |
Page 292 and 293:
| | | | | | | | | | | | | | | | | |
Page 294 and 295:
Page 296 and 297:
▌1▐ CREATE TRIGGER REORDER ▌2
Page 298 and 299:
Granularity Triggers are not activa
Page 300 and 301:
This insert statement, and the subs
Page 302 and 303:
Table 27. Valid SQL statements for
Page 304 and 305:
example, user-defined function PAYR
Page 306 and 307:
When an insert operation occurs on
Page 308 and 309:
| | | | | If the user does not have
Page 310 and 311:
Table T1 Table T2 Table T3 A1 B1 C1
Page 312 and 313:
Page 314 and 315:
Page 316 and 317:
| | | | | | | | | | | one auxiliary
Page 318 and 319:
# # # # # # # # # Sample LOB applic
Page 320 and 321:
| Table 30. Examples of C language
Page 322 and 323:
Table 33. Examples of PL/I variable
Page 324 and 325:
Because the program in Figure 121 u
Page 326 and 327:
# # # # # # # # # # # # # # # # # #
Page 328 and 329:
This step is necessary only for an
Page 330 and 331:
Table 34. User-defined function sam
Page 332 and 333:
# # # # # # | | | | | | | | # Table
Page 334 and 335:
| BOAT is based on a BLOB data type
Page 336 and 337:
v You must close all cursors that w
Page 338 and 339:
Page 340 and 341:
# # # # For all data types except L
Page 342 and 343:
Page 344 and 345:
Page 346 and 347:
Page 348 and 349:
| | | 322 Application Programming a
Page 350 and 351:
| Reserved area 26 bytes. Table fun
Page 352 and 353:
v The argv variable contains an arr
Page 354 and 355:
| #pragma runopts(plist(os)) #inclu
Page 356 and 357:
CBL APOST,RES,RENT IDENTIFICATION D
Page 358 and 359:
| | | | | | | | | | | 332 Applicati
Page 360 and 361:
| | | | | | | | | Table 41. Charact
Page 362 and 363:
Table 41. Characteristics of specia
Page 364 and 365:
| 338 Application Programming and S
Page 366 and 367:
PROGAREA DSECT WORKING STORAGE FOR
Page 368 and 369:
CHECK_EMP: PROC(TRIG_TBL_ID) RETURN
Page 370 and 371:
Preparing user-defined functions to
Page 372 and 373:
TEST(ALL,TESTDD,PROMPT,*) The first
Page 374 and 375:
►► ► TABLE AS ( function-name
Page 376 and 377:
is the same as or lower than the re
Page 378 and 379:
How you can simplify function resol
Page 380 and 381:
| Casting of user-defined function
Page 382 and 383:
You cannot execute this SQL stateme
Page 384 and 385:
Page 386 and 387:
| | | Using distinct types in appli
Page 388 and 389:
to the other because the columns ar
Page 390 and 391:
| CREATE FUNCTION HOUR(FLIGHT_TIME)
Page 392 and 393:
CREATE LOB TABLESPACE DOCTSLOB LOG
Page 394 and 395:
Page 396 and 397:
Page 398 and 399:
Page 400 and 401:
| | | 374 Application Programming a
Page 402 and 403:
Planning to bind Depending on how y
Page 404 and 405:
CICS With packages, you probably do
Page 406 and 407:
Table 44. Behavior of REBIND PACKAG
Page 408 and 409:
| | | | | | | | | | | | | | | | | I
Page 410 and 411:
Page 412 and 413:
Effects of DB2 locks Suspension Tim
Page 414 and 415:
| | Notes: Job EMPLJCHG (1) OK Tabl
Page 416 and 417:
| | | | | | | | | | Recommendations
Page 418 and 419:
| | 392 Application Programming and
Page 420 and 421:
Aspects of transaction locks The si
Page 422 and 423:
matter what tables the data belongs
Page 424 and 425:
| | | | | 398 Application Programmi
Page 426 and 427:
| | Options for tuning locks Bind o
Page 428 and 429:
Page 430 and 431:
| | | | | 404 Application Programmi
Page 432 and 433:
Page 434 and 435:
Application Time line DB2 Request r
Page 436 and 437:
Application Request row or page Tim
Page 438 and 439:
In all cases, it is a good programm
Page 440 and 441:
| | | | | | | | | | | | | | | Table
Page 442 and 443:
Page 444 and 445:
acquired. Table 58. Locks that are
Page 446 and 447:
v Alter the LOB table space to chan
Page 448 and 449:
| | | | | | | | | | Unit of work in
Page 450 and 451:
v The program issues a checkpoint c
Page 452 and 453:
When are checkpoints important? Iss
Page 454 and 455:
v The number of root segments your
Page 456 and 457:
Page 458 and 459:
| | | | | | v Integration: DRDA acc
Page 460 and 461:
| | Bind processes for DRDA and DB2
Page 462 and 463:
Page 464 and 465:
| | | v Three-part table names, as
Page 466 and 467:
| | | However, you cannot perform t
Page 468 and 469:
Coordinating updates to two or more
Page 470 and 471:
Coding efficient queries A query th
Page 472 and 473:
Remember that statically bound SQL
Page 474 and 475:
CURRENTDATA(NO) Use this bind optio
Page 476 and 477:
| | Table 60. Effect of CURRENTDATA
Page 478 and 479:
Page 480 and 481:
| | | | | | | | Limiting the number
Page 482 and 483:
| | | | | | | | | | | the server su
Page 484 and 485:
Identifying the server at run time
Page 486 and 487:
Page 488 and 489:
| | | | | | | | | | | | | | | | | |
Page 490 and 491:
Page 492 and 493:
precompiler, regardless of the valu
Page 494 and 495:
| | | | | | | | | | | | | | | | | |
Page 496 and 497:
| - DB2 load library (prefix.SDSNLO
Page 498 and 499:
| | Table 63. SQL processing option
Page 500 and 501:
| | | | | | | | | Table 63. SQL pro
Page 502 and 503:
| | | | Table 63. SQL processing op
Page 504 and 505:
value of DSNHDECP parameter DYNRULS
Page 506 and 507:
IMS Include the DB2 IMS (Version 1
Page 508 and 509:
Page 510 and 511:
| | | | | | | | | | | | | | | | | |
Page 512 and 513:
| | | | | | | | | | | | | | | | | |
Page 514 and 515:
| - The program is called by a stor
Page 516 and 517:
Page 518 and 519:
Using packages with dynamic plan se
Page 520 and 521:
Page 522 and 523:
Page 524 and 525:
assembler. The procedures are in pr
Page 526 and 527:
Page 528 and 529:
CICS (continued) //****************
Page 530 and 531:
| | | | | | | | | | | | | | | | | |
Page 532 and 533:
Page 534 and 535:
Table 72. Description of the applic
Page 536 and 537:
v The LOAD utility obtains data fro
Page 538 and 539:
Some sites run a BMP at the end of
Page 540 and 541:
This is the type of SQL statement t
Page 542 and 543:
Locating the problem The attachment
Page 544 and 545:
Notes for Figure 155: 1. Error mess
Page 546 and 547:
DB2 SQL PRECOMPILER TMN5P40:PROCEDU
Page 548 and 549:
Page 550 and 551:
parameter of the DDITV02 data set f
Page 552 and 553:
Synchronization call abends If the
Page 554 and 555:
table, the translated name is used
Page 556 and 557:
Restart and recovery //G.DDOTV02 DD
Page 558 and 559:
G.DDOTV02 DD DSN=&TEMP2,DISP=(NEW,P
Page 560 and 561:
Page 562 and 563:
| | | | | | | | | | | 536 Applicati
Page 564 and 565:
Page 566 and 567:
| | | | | | | 540 Application Progr
Page 568 and 569:
Page 570 and 571:
Flexibility of static SQL with host
Page 572 and 573:
| | | | | | | | | | | | | | | | | |
Page 574 and 575:
Page 576 and 577:
Relationship between KEEPDYNAMIC(YE
Page 578 and 579:
Your system administrator can estab
Page 580 and 581:
| | | | | | | | | | | | | | | | | |
Page 582 and 583:
v Use parameter markers instead of
Page 584 and 585:
| | | | | | | | | | | | | | | | | |
Page 586 and 587:
After you execute DESCRIBE INPUT, y
Page 588 and 589:
Opening the cursor The OPEN stateme
Page 590 and 591:
Obtaining information about the SQL
Page 592 and 593:
Figure 164. The full-size SQLDA str
Page 594 and 595:
Figure 168 shows the SQLDA after yo
Page 596 and 597:
Page 598 and 599:
Figure 172 shows the contents of FU
Page 600 and 601:
The first variable (VAR1 in the exa
Page 602 and 603:
| | | | | | | | | | | | | | | | | |
Page 604 and 605:
Figure 173 shows processing without
Page 606 and 607:
Figure 175. Stored procedure overvi
Page 608 and 609:
| | | | | | | Setting up the stored
Page 610 and 611:
# # | | | | | # | Table 75. Charact
Page 612 and 613:
| | | | | | | | | 18 Linux 19 DYNIX
Page 614 and 615:
| | The method that you use to perf
Page 616 and 617:
| | | | | | | | | | | | | | | | | |
Page 618 and 619:
Page 620 and 621:
# # # # /**************************
Page 622 and 623:
| | | | | | | | | Table 77. Charact
Page 624 and 625:
DSNTIP5. A value of PRIVATE tells D
Page 626 and 627:
Using a temporary table to return r
Page 628 and 629:
# # # | | | v A plan or package con
Page 630 and 631:
Page 632 and 633:
| v Write a CREATE PROCEDURE statem
Page 634 and 635:
| | Statements that you can include
Page 636 and 637:
input parameter of type CHAR(6). Al
Page 638 and 639:
| | | | | | | | Example: EXIT handl
Page 640 and 641:
| | | | | | | | | | | | | | | | | |
Page 642 and 643:
Page 644 and 645:
| | | | | | | | | | | | | | 618 App
Page 646 and 647:
| | | | | | | | | | | | | | | | | |
Page 648 and 649:
| | | | | | | | | | | | | | | | | |
Page 650 and 651:
| | | | | | | | | | | | | | | | | |
Page 652 and 653:
| | | | | | | | | | | | | | | | | |
Page 654 and 655:
Page 656 and 657:
Page 658 and 659:
Page 660 and 661:
| Figure 189. Parameter convention
Page 662 and 663:
#pragma runopts(PLIST(OS)) #pragma
Page 664 and 665:
parameters. See “Examples of usin
Page 666 and 667:
#pragma options(RENT) #pragma runop
Page 668 and 669:
Page 670 and 671:
Page 672 and 673:
Page 674 and 675:
| | | | | | | | | | | | | | | | | |
Page 676 and 677:
| | | . DCL 01 SP_DBINFO BASED(DBIN
Page 678 and 679:
# # # # # # SQL data type declarati
Page 680 and 681:
Page 682 and 683:
Table 87. Compatible PL/I declarati
Page 684 and 685:
Page 686 and 687:
Page 688 and 689:
Accessing transition tables in a st
Page 690 and 691:
Page 692 and 693:
Preparing a client program You must
Page 694 and 695:
v If the stored procedure does not
Page 696 and 697:
| | | | | | | | | | | | | You can o
Page 698 and 699:
Testing a stored procedure CICS Sto
Page 700 and 701:
| program that is produced by the p
Page 702 and 703:
with DD name INSPLOG in the stored
Page 704 and 705:
Page 706 and 707:
| | | | | | | | | | | | | | | | | |
Page 708 and 709:
| | | | | | | | | | | | | If your q
Page 710 and 711:
Local or join Local predicates refe
Page 712 and 713:
| | | | | If T2 is the first table
Page 714 and 715:
| | | # | | # | # Summary of predic
Page 716 and 717:
# # | | | | | | | | | | | | |# |# |
Page 718 and 719:
| | | | | | | | | | | | | | | | | |
Page 720 and 721:
access. Rows that satisfy the compo
Page 722 and 723:
Interpolation formulas Definition:
Page 724 and 725:
| | | | | | | | | | | | | | | | | |
Page 726 and 727:
| | | Column correlation Two column
Page 728 and 729:
| | | | | “Nonmatching index scan
Page 730 and 731:
Example: The predicate, X.C2>12, fi
Page 732 and 733:
| | | | | | | | | | | | | | | v COL
Page 734 and 735:
| | | | | | | | | | | | | | | | | |
Page 736 and 737:
| | | | | | | | | | | | | | | The R
Page 738 and 739:
SELECT * FROM T1 WHERE C1 BETWEEN :
Page 740 and 741:
The in-memory table saves execution
Page 742 and 743:
| | | | | | Conditions for DB2 to t
Page 744 and 745:
| | | | | | SELECT * FROM DSN8810.E
Page 746 and 747:
| | | | | | | | | | | | | | | | | |
Page 748 and 749:
Obtaining information about access
Page 750 and 751:
When OPTIMIZE FOR n ROWS is effecti
Page 752 and 753:
| | | | | | | | | | | | | | | | | |
Page 754 and 755:
SELECT * FROM PART_HISTORY WHERE PA
Page 756 and 757:
S-{Cm} The current set of columns,
Page 758 and 759:
| | INSERT INTO SYSIBM.SYSCOLDIST (
Page 760 and 761:
Page 762 and 763:
| | response time from adding proce
Page 764 and 765:
| | | | | | | # # # # # | | | | | |
Page 766 and 767:
| | | | Table 99. Descriptions of c
Page 768 and 769:
| | | | | | | Table 99. Description
Page 770 and 771:
| | | | | | | | | | | | | | | | | |
Page 772 and 773:
All rows with the same non-zero val
Page 774 and 775:
| | | | | | The plan table for this
Page 776 and 777:
Example: Assume that the host varia
Page 778 and 779:
| | | | | Is a view or nested table
Page 780 and 781:
| | | | METHOD 3 sorts: These are u
Page 782 and 783:
Table space scans of nonsegmented t
Page 784 and 785:
| | The predicates can be applied o
Page 786 and 787:
One-fetch access (ACCESSTYPE=I1) On
Page 788 and 789:
Example: Figure 212 shows a two-ste
Page 790 and 791:
Nested loop join (METHOD=1) This se
Page 792 and 793:
Merge scan join (METHOD=2) Merge sc
Page 794 and 795:
SELECT A, B, X, Y FROM OUTER, INNER
Page 796 and 797:
| | | | | | 770 Application Program
Page 798 and 799:
1, 2, or 3 Star join is always cons
Page 800 and 801:
| | | | | | | | | | | | | | | | | |
Page 802 and 803:
| | | | | | | | | | | | | | | | | |
Page 804 and 805:
| | | | List prefetch does not pres
Page 806 and 807:
Determining sort activity Sorts of
Page 808 and 809:
With parallelism: v At OPEN CURSOR,
Page 810 and 811:
Table 120. Cases when DB2 performs
Page 812 and 813:
View defining statement: CREATE VIE
Page 814 and 815:
| Estimating a statement’s cost 7
Page 816 and 817:
| | | | | | | | Table 125. Descript
Page 818 and 819:
Page 820 and 821:
Figure 219 shows sequential process
Page 822 and 823:
| | | | | | | | Enabling parallel p
Page 824 and 825:
Interpreting EXPLAIN output DB2 avo
Page 826 and 827:
| | | | | | | | | Table 130. Part o
Page 828 and 829:
Page 830 and 831:
Figure 222. DSN task structure Note
Page 832 and 833:
Page 834 and 835:
Page 836 and 837:
How to use CAF 810 Application Prog
Page 838 and 839:
v “Error messages and dsntrace”
Page 840 and 841:
If you do not specify the precompil
Page 842 and 843:
Page 844 and 845:
Page 846 and 847:
Using a CONNECT call is optional. T
Page 848 and 849:
Table 135. Examples of CAF OPEN cal
Page 850 and 851:
Table 136. Examples of CAF CLOSE ca
Page 852 and 853:
Table 137. Examples of CAF DISCONNE
Page 854 and 855:
Table 139. Effects of CAF calls, as
Page 856 and 857:
Recovery routines The call attachme
Page 858 and 859:
jobname JOB z/OS_jobcard_informatio
Page 860 and 861:
PLAN The plan name to use on the OP
Page 862 and 863:
CLC REASCODE,F30012 Hunt for X’00
Page 864 and 865:
Page 866 and 867:
Task capabilities Any task in an ad
Page 868 and 869:
| | | | | | | | | How to use RRSAF
Page 870 and 871:
| | | | | | | | | | | | | | | | | |
Page 872 and 873:
v Entry point DSNRLI handles explic
Page 874 and 875:
| | | | | | | | | | | | | | | | | |
Page 876 and 877:
Table 143. Register conventions for
Page 878 and 879:
Page 880 and 881:
etcode A 4-byte area in which RRSAF
Page 882 and 883:
| | | | | | | 856 Application Progr
Page 884 and 885:
v Associate the ACEE with the user
Page 886 and 887:
| | | | | | reascode A 4-byte area
Page 888 and 889:
| | | “DSNRLI CONTEXT SIGNON func
Page 890 and 891:
the same data. A global transaction
Page 892 and 893:
| | | | | | | | | | | | | | | | | T
Page 894 and 895:
| | | | | | | | | | | | | | | | | |
Page 896 and 897:
Using a package list can have a neg
Page 898 and 899:
Table 154. Examples of RRSAF TERMIN
Page 900 and 901:
sqlca The program’s SQL communica
Page 902 and 903:
| | v Task 1 then creates context c
Page 904 and 905:
In the example that follows, LISQL
Page 906 and 907:
Page 908 and 909:
| | | | | | | UPNREADY DS 0H attach
Page 910 and 911:
| | | | | | | | | | | | | | | | | |
Page 912 and 913:
| | | | | | | | | | | | | | | | | |
Page 914 and 915:
| | | | | | | | | | | | | | | | | |
Page 916 and 917:
| | | | | | | | | | | | | | | | | |
Page 918 and 919:
| | | | | | | | | | | | | | | | | |
Page 920 and 921:
| # # # # # # # # # # # # # # # # #
Page 922 and 923:
# # # # # # # # # # # # # # # # # #
Page 924 and 925:
# # # # # # # # # # # # # # # # # #
Page 926 and 927:
# # # # # # # # # # # # # # # # # #
Page 928 and 929:
# # # # # # # # # # # # # # # # # #
Page 930 and 931:
Page 932 and 933:
***********************************
Page 934 and 935:
* Fetch backward 5 rows */ /*******
Page 936 and 937:
Use OPTIMIZE FOR 1 ROW to influence
Page 938 and 939:
Page 940 and 941:
Page 942 and 943:
Table 161. Columns of the activity
Page 944 and 945:
It is a dependent of the employee t
Page 946 and 947:
Table 168. Left half of DSN8810.EMP
Page 948 and 949:
Table 171. Indexes of the employee
Page 950 and 951:
Table 175 shows the content of the
Page 952 and 953:
| | | This table has no indexes Rel
Page 954 and 955:
CREATE VIEW DSN8810.VEMP AS SELECT
Page 956 and 957:
CREATE VIEW DSN8810.VPSTRDE1 (PROJ1
Page 958 and 959:
| | | | | | | | | | | Storage group
Page 960 and 961:
| | | | | | | | | | | | | | | | | |
Page 962 and 963:
These applications let you pass DB2
Page 964 and 965:
TSO Table 182. Sample DB2 applicati
Page 966 and 967:
IMS CICS Table 183. Sample DB2 appl
Page 968 and 969:
# # # Running DSNTIAUL 942 Applicat
Page 970 and 971:
DSNTIAUL processes a SELECT stateme
Page 972 and 973:
Running DSNTIAD This section contai
Page 974 and 975:
| | # # # # # # 948 Application Pro
Page 976 and 977:
| | | | | | | | | | | | | | | | | |
Page 978 and 979:
Example 952 Application Programming
Page 980 and 981:
Page 982 and 983:
Page 984 and 985:
Page 986 and 987:
Page 988 and 989:
Page 990 and 991:
Sample dynamic and static SQL in a
Page 992 and 993:
Page 994 and 995:
DRAW syntax: ►► %DRAW object-na
Page 996 and 997:
Generate a template for an UPDATE s
Page 998 and 999:
Page 1000 and 1001:
Page 1002 and 1003:
Page 1004 and 1005:
Page 1006 and 1007:
Page 1008 and 1009:
Page 1010 and 1011:
Page 1012 and 1013:
PROG-END. CLOSE PRINTER. GOBACK. **
Page 1014 and 1015:
***********************************
Page 1016 and 1017:
Page 1018 and 1019:
Page 1020 and 1021:
PERFORM PTSQLCA. IF SQLCODE IS EQUA
Page 1022 and 1023:
Calling a stored procedure from a C
Page 1024 and 1025:
Page 1026 and 1027:
IDENTIFICATION DIVISION. PROGRAM-ID
Page 1028 and 1029:
* MAKE THE CALL IF SQLCODE NOT EQUA
Page 1030 and 1031:
1004 Application Programming and SQ
Page 1032 and 1033:
C stored procedure: GENERAL WITH NU
Page 1034 and 1035:
COBOL stored procedure: GENERAL Thi
Page 1036 and 1037:
CBL RENT IDENTIFICATION DIVISION. P
Page 1038 and 1039:
CBL RENT IDENTIFICATION DIVISION. P
Page 1040 and 1041:
ASUTIME NO LIMIT PARAMETER STYLE GE
Page 1042 and 1043:
Page 1044 and 1045:
| | | | | | | | | | | | | | | | | |
Page 1046 and 1047:
| | | | | | | | | | | | | | | | | |
Page 1048 and 1049:
Page 1050 and 1051:
Page 1052 and 1053:
| | | | | | | | | | | | | SELECT SU
Page 1054 and 1055:
Page 1056 and 1057:
Table 195. SQL reserved words ADD A
Page 1058 and 1059:
Page 1060 and 1061:
| | | | | | Table 196. Actions allo
Page 1062 and 1063:
Table 196. Actions allowed on SQL s
Page 1064 and 1065:
| | Table 197. SQL statements in ex
Page 1066 and 1067:
| | Table 198. Valid SQL statements
Page 1068 and 1069:
Page 1070 and 1071:
| | | | Table 199. Program preparat
Page 1072 and 1073:
Environment for WLM_REFRESH WLM_REF
Page 1074 and 1075:
strcpy(WLMENV,"WLMENV1"); strcpy(SS
Page 1076 and 1077:
Page 1078 and 1079:
Parameter list for DSNACICX At invo
Page 1080 and 1081:
***********************************
Page 1082 and 1083:
# # # # # # # # # # # # # # # # # #
Page 1084 and 1085:
# # # # # # # # # # # # # # # # # #
Page 1086 and 1087:
Page 1088 and 1089:
Licensees of this program who wish
Page 1090 and 1091:
Page 1092 and 1093:
| APF basic sequential access metho
Page 1094 and 1095:
| catalog closed application catalo
Page 1096 and 1097:
connection cost category connection
Page 1098 and 1099:
| | | | | | | | | | | | | | | | | |
Page 1100 and 1101:
| | | | # # # dependent row drain l
Page 1102 and 1103:
executable statement foreign key ex
Page 1104 and 1105:
| | | | group level image copy pool
Page 1106 and 1107:
| | | | | instrumentation facility
Page 1108 and 1109:
| | | | | | location alias LUW loca
Page 1110 and 1111:
| | | | network identifier (NID) pa
Page 1112 and 1113:
| | partner logical unit primary au
Page 1114 and 1115:
| | | | | RACF referential integrit
Page 1116 and 1117:
esource manager scale resource mana
Page 1118 and 1119:
shift-out character SQL path shift-
Page 1120 and 1121:
subquery table space subquery. A SE
Page 1122 and 1123:
trigger activation unit of recovery
Page 1124 and 1125:
| | | | | Virtual Storage Access Me
Page 1126 and 1127:
v CICS Transaction Server for z/OS
Page 1128 and 1129:
DFSORT v DFSORT Application Progra
Page 1130 and 1131:
v VTAM for MVS/ESA Messages and Cod
Page 1132 and 1133:
Page 1134 and 1135:
application program (continued) pre
Page 1136 and 1137:
calculated values (continued) summa
Page 1138 and 1139:
CONNECT (connection function of CAF
Page 1140 and 1141:
deadlock (continued) with RELEASE(D
Page 1142 and 1143:
DSNHDECP (continued) implicit RRSAF
Page 1144 and 1145:
GET DIAGNOSTICS statement (continue
Page 1146 and 1147:
ISPF (Interactive System Productivi
Page 1148 and 1149:
multiple-row FETCH statement (conti
Page 1150 and 1151:
precompiler (continued) precompilin
Page 1152 and 1153:
ROWID variable (continued) COBOL 18
Page 1154 and 1155:
single-mode IMS programs 426 SOME q
Page 1156 and 1157:
SQLDA (SQL descriptor area) (contin
Page 1158 and 1159:
trigger (continued) coding 271 data
Page 1160 and 1161:
WHENEVER statement (continued) Fort
Page 1162:
Readers’ Comments — We’d Like
show all

Application Programming and SQL Guide - Kmlinux

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?