IBM

DB2

SQL

7

SC88-8540-01

(SC09-2974-01)

IBM

DB2

SQL

7

SC88-8540-01

(SC09-2974-01)

! 1571S.

IBM

URL

http://www.ibm.com/jp/manuals/main/mail.html

IBM

http://www.ibm.com/jp/manuals/

(URL )

SC09-2974-01IBM DB2 Universal Database

SQL Reference

Version 7

1 2001.8

W3W9W3W5W7(*)()

* W3W9W3W5W7

Copyright International Business Machines Corporation 1993, 2001. All rights reserved.

Translation: Copyright IBM Japan 2001

: PDF

1 . . . . . . . . . . . . 1 . . . . . . . . . . . 1 . . . . . . . . . . . . 1 . . . . . . . . . . . . 1

. . . . . . . . . . . . 3 . . . . . . . . . . . 5 . . . . . . . . . . . . 5 . . . . . . . . . . 5

. . . . . . . . . . . . . 5

2 . . . . . . . . . . . . 9 . . . . 9 (SQL) . . . . . . . . . 9 . . . . . . . . . . . . 10 . . . . . . . . . . . . . 12. . . . . . . . 12

. . . . . . . . . . . . . . . 13. . . . . . . . . . . . . . . 14. . . . . . . . . . . . . . . 15. . . . . . . . . . . . . . . 15. . . . . . . . . . . . . . . 15 . . . . . . . . . . . . 16 . . . . . . . . . . . . 16 . . . . . . . . . . . . 16 . . . . . . . . . . . 16

. . . . . . . . . . . . . . . 16 . . . . . . . . . . . . 17 . . . . . . . . . . . . 17 . . . . . . . . . . . 20

. . . . . . . . . . . . 21 (RR) . . . . . . . 22 (RS) . . . . . . . . . 22 (CS) . . . . . . . . . 23 (UR) . . . . . . 23 . . . . . . . . . 24

. . . . . . . . . . . . . . . 24. . . . . . . . . . . . . . . 24 . . . . . . . . . . . . 24

. . . . . . . . . . . . 24 SQL . . . . . . . . . . . . 27

SQL . . . . . . . . . . . 27 SQL . . . . . . . . . . . . 27 SQL . . . . . . . . . . . . 28

DB2 (CLI) Open Database Connectivity (ODBC) . 28JDBC (Java Database Connectivity) JavaEmbedded SQL (SQLJ) . . . . 29 . . . . . . . . . . . . 29. . . . . . . . . . . . 30 . . . . . . . . . . . . . 30 . . . . . 31 . . . . . . . . 32

. . . . . . . . . 33 . . . . . . . . . . . . . 34 . . . 35 . . . . 37. . . . . . . . . . . 38 . . . . . . . . . . . . 38

. . . . 39 . . . . . 40CONNECT ( 1) CONNECT ( 2) . . . . . . . . . . . . . 41 . . . . . . . . . 41 . . 46 . . . . 51

DB2 . . . . . . . . . . 51 . . . . . . . . . . 51DB2 . . 52 . . 54 . . 54. . . . . . . . . . . . . . 57 . . . . . 58. . . . . 58 . . . . . 59 . . . . . . . . . . . . 60 . . . . . . . . . . . . 61. . . . . . . . . . . . . . 62 . . . . . . . . . . . 62

Copyright IBM Corp. 1993, 2001 iii

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3 . . . . . . . . 65. . . . . . . . . . . . . . . 65

MBCS . . . . . . 66 . . . . . . . . . . . . . 66

MBCS . . . . . . 67ID . . . . . . . . . . . . . . . 67

SQL ID . . . . . . . . . . . . 67 ID . . . . . . . . . . . . 68

68. . . . . . . . . . . . . . . 73 ID . . . . . . . . . . 74 SQL . . . . 75 ID . . . . 77

. . . . . . . . . . . 77 . . . . . . . . . . . . . 78 (LOB) . . . . . 78 . . . . . . . . . . 80 . . . . . . . . . . 822 . . . . . . . . . . 83. . . . . . . . . . . . . . 83 / . . . . . . . . . . 84DATALINK . . . . . . . . . . 87 . . . . . . . . 89

. . . . . 92 . . . . . . 93 . . . . . . . . . . . 96 . . . . . . . . . . 97 . . . . . . . . 98 / . . . . . . . 101DATALINK . . . . . . . 101 . . . . 103 . . . . . . . 104 . . . . . . . . . . . 104 . . . . . . . . . 104 / . . . . . . . . 108 . . . . . . 108 . . . . . . . . . 109

. . . . . . . 110 . . . . . . . . . 110 . . . . . . . . . 1112 (BLOB) . . . 111 . . . . . . . . . . . . . 112DATE () . . . . . . . . . . 112TIME () . . . . . . . . . . 112TIMESTAMP () . . . 113DATALINK () . . . . . 113

. . . . . . . . 113 . . . . . . . . 113

. . . . . . . . 114 . . . . . . . . . . . 116 . . . . . . . . . . . . . . 117 . . . . . . . . . . . . 118 . . . . . . . . . 11810 . . . . . . . . . . . 118 . . . . . . . . 11816 . . . . . . . . . . . 119 . . . . . . . . 119 . . 120

. . . . . . . . . . 120CLIENT ACCTNG. . . . . . . . . 120CLIENT APPLNAME. . . . . . . . 121CLIENT USERID . . . . . . . . . 121CLIENT WRKSTNNAME . . . . . . 122CURRENT DATE . . . . . . . . . 122CURRENT DEFAULT TRANSFORMGROUP . . . . . . . . . . . . 123CURRENT DEGREE . . . . . . . . 123CURRENT EXPLAIN MODE . . . . . 124CURRENT EXPLAIN SNAPSHOT . . . 125CURRENT NODE . . . . . . . . . 126CURRENT PATH . . . . . . . . . 127CURRENT QUERY OPTIMIZATION . . 128CURRENT REFRESH AGE. . . . . . 128CURRENT SCHEMA . . . . . . . . 129CURRENT SERVER . . . . . . . . 129CURRENT TIME . . . . . . . . . 129CURRENT TIMESTAMP . . . . . . 130CURRENT TIMEZONE . . . . . . . 130USER . . . . . . . . . . . . . 131

. . . . . . . . . . . . . . 131 . . . . . . . . . 132 . . . . . . . . . . . . 132 . . 134 . . . . . 136

. . . . . . . . . . 138 SQL . . . . 138BLOBCLOB DBCLOB . . . . . . . . . . 141 . . . . . . . 141BLOBCLOB DBCLOB . . . . . . . . . 142 . . . . 145

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. . . . . . . . . . . . . . 146SQL . . . . . . . . . . . . . 146 . . . . . . . . . . . . 147 . . . . . . . . . 147SQL . . . . . . . . . . . 148 . . . . . . . . . . . . 148 . . . . . . . . . 152

. . . . . . . . . . . . . 153 SQL 154 . . . . . . 154 . . . . . . . . 155 . . . . . . . . . . 155 . . . . . 157 . . . . . . . . . 157 . . . . . . . . 158

. . . . 159 . . . . . . . . . . . . . . . 161 . . . . . . . 162 . . . . . . . . . . . 162 . . . . . . 1652 . . . . . . . 166 10 . . . . . . 1662 10 . . . . . . 166SQL 10 . . . . . . . 167 . . . . . . . 167 167 . . . . . . . . . 168 / . . . . . . . 168SQL / . . 169 . . . . . . . . . 174CASE . . . . . . . . . . . . 174CAST . . . . . . . . . . . 176 . . . . . . . . . . 179OLAP . . . . . . . . . . . 181 . . . . . . . . 187 . . . . . . . . . 188 . . . . . . . . . 189

. . . . . . . . . . . . . . 194 . . . . . . . . . . . . 195 . . . . . . . . . . . . 196BETWEEN . . . . . . . . . 199EXISTS . . . . . . . . . . 201IN . . . . . . . . . . . . 202LIKE . . . . . . . . . . . 205

NULL . . . . . . . . . . . 210TYPE . . . . . . . . . . . 211

. . . . . . . . . . . . . 213 . . . . . . . . . . . . . . 215

4 . . . . . . . . . . . . 217 . . . . . . . . . . . . . 234

AVG . . . . . . . . . . . . . 235CORRELATION . . . . . . . . . 237COUNT . . . . . . . . . . . . 238COUNT_BIG . . . . . . . . . . 240COVARIANCE . . . . . . . . . . 242GROUPING . . . . . . . . . . . 243MAX . . . . . . . . . . . . . 245MIN . . . . . . . . . . . . . 247REGRESSION . . . . . . . . 249STDDEV . . . . . . . . . . . . 252SUM . . . . . . . . . . . . . 253VARIANCE . . . . . . . . . . . 254

. . . . . . . . . . . 255ABS ABSVAL . . . . . . . 256ACOS . . . . . . . . . . . . . 257ASCII . . . . . . . . . . . . . 258ASIN . . . . . . . . . . . . . 259ATAN. . . . . . . . . . . . . 260ATAN2 . . . . . . . . . . . . 261BIGINT . . . . . . . . . . . . 262BLOB . . . . . . . . . . . . . 263CEILING CEIL . . . . . . . 264CHAR. . . . . . . . . . . . . 265CHR . . . . . . . . . . . . . 270CLOB . . . . . . . . . . . . . 271COALESCE . . . . . . . . . . . 272CONCAT. . . . . . . . . . . . 273COS . . . . . . . . . . . . . 274COT . . . . . . . . . . . . . 275DATE . . . . . . . . . . . . . 276DAY . . . . . . . . . . . . . 277DAYNAME . . . . . . . . . . . 278DAYOFWEEK . . . . . . . . . . 279DAYOFWEEK_ISO . . . . . . . . 280DAYOFYEAR . . . . . . . . . . 281DAYS . . . . . . . . . . . . . 282DBCLOB . . . . . . . . . . . . 283DECIMAL . . . . . . . . . . . 284DECRYPT_BIN DECRYPT_CHAR 287

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DEGREES . . . . . . . . . . . 289DEREF . . . . . . . . . . . . 290DIFFERENCE . . . . . . . . . . 291DIGITS . . . . . . . . . . . . 292DLCOMMENT . . . . . . . . . . 293DLLINKTYPE . . . . . . . . . . 294DLURLCOMPLETE . . . . . . . . 295DLURLPATH . . . . . . . . . . 296DLURLPATHONLY . . . . . . . . 297DLURLSCHEME . . . . . . . . . 298DLURLSERVER . . . . . . . . . 299DLVALUE . . . . . . . . . . . 300DOUBLE . . . . . . . . . . . . 302ENCRYPT . . . . . . . . . . . 304EVENT_MON_STATE . . . . . . . 307EXP . . . . . . . . . . . . . 308FLOAT . . . . . . . . . . . . 309FLOOR . . . . . . . . . . . . 310GETHINT . . . . . . . . . . . 311GENERATE_UNIQUE . . . . . . . 312GRAPHIC . . . . . . . . . . . 314HEX . . . . . . . . . . . . . 315HOUR. . . . . . . . . . . . . 317IDENTITY_VAL_LOCAL . . . . . . 318INSERT . . . . . . . . . . . . 323INTEGER . . . . . . . . . . . 325JULIAN_DAY . . . . . . . . . . 326LCASE LOWER . . . . . . . 327LCASE (SYSFUN ) . . . . . 328LEFT . . . . . . . . . . . . . 329LENGTH . . . . . . . . . . . . 330LN . . . . . . . . . . . . . . 332LOCATE . . . . . . . . . . . . 333LOG . . . . . . . . . . . . . 334LOG10 . . . . . . . . . . . . 335LONG_VARCHAR. . . . . . . . . 336LONG_VARGRAPHIC . . . . . . . 337LTRIM . . . . . . . . . . . . 338LTRIM (SYSFUN ) . . . . . 339MICROSECOND . . . . . . . . . 340MIDNIGHT_SECONDS . . . . . . . 341MINUTE . . . . . . . . . . . . 342MOD . . . . . . . . . . . . . 343MONTH . . . . . . . . . . . . 344MONTHNAME . . . . . . . . . . 345MQPUBLISH . . . . . . . . . . 346

MQREAD . . . . . . . . . . . 349MQRECEIVE . . . . . . . . . . 351MQSEND . . . . . . . . . . . 353MQSUBSCRIBE . . . . . . . . . 355MQUNSUBSCRIBE . . . . . . . . 357MULTIPLY_ALT . . . . . . . . . 359NODENUMBER . . . . . . . . . 361NULLIF . . . . . . . . . . . . 363PARTITION . . . . . . . . . . . 364POSSTR . . . . . . . . . . . . 366POWER . . . . . . . . . . . . 368QUARTER . . . . . . . . . . . 369RADIANS . . . . . . . . . . . 370RAISE_ERROR . . . . . . . . . . 371RAND. . . . . . . . . . . . . 373REAL . . . . . . . . . . . . . 374REC2XML . . . . . . . . . . . 375REPEAT . . . . . . . . . . . . 380REPLACE . . . . . . . . . . . 381RIGHT . . . . . . . . . . . . 382ROUND . . . . . . . . . . . . 383RTRIM . . . . . . . . . . . . 385RTRIM (SYSFUN ) . . . . . 386SECOND . . . . . . . . . . . . 387SIGN . . . . . . . . . . . . . 388SIN . . . . . . . . . . . . . 389SMALLINT . . . . . . . . . . . 390SOUNDEX . . . . . . . . . . . 391SPACE . . . . . . . . . . . . 392SQRT . . . . . . . . . . . . . 393SUBSTR . . . . . . . . . . . . 394TABLE_NAME . . . . . . . . . . 398TABLE_SCHEMA . . . . . . . . . 400TAN . . . . . . . . . . . . . 402TIME . . . . . . . . . . . . . 403TIMESTAMP . . . . . . . . . . 404TIMESTAMP_ISO . . . . . . . . . 406TIMESTAMPDIFF . . . . . . . . . 407TRANSLATE . . . . . . . . . . 409TRUNCATE TRUNC . . . . . 412TYPE_ID . . . . . . . . . . . . 413TYPE_NAME . . . . . . . . . . 414TYPE_SCHEMA . . . . . . . . . 415UCASE UPPER . . . . . . . 416VALUE . . . . . . . . . . . . 417VARCHAR . . . . . . . . . . . 418

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VARGRAPHIC . . . . . . . . . . 420WEEK . . . . . . . . . . . . 422WEEK_ISO . . . . . . . . . . . 423YEAR . . . . . . . . . . . . . 424

. . . . . . . . . . . . . 425MQREADALL . . . . . . . . . . 426MQRECEIVEALL . . . . . . . . . 428SQLCACHE_SNAPSHOT . . . . . . 431

. . . . . . . . . . 432GET_ROUTINE_SAR . . . . . . . . 433PUT_ROUTINE_SAR . . . . . . . . 434

. . . . . . . . . . 436

5 . . . . . . . . . . . . 439 . . . . . . . . . . . . . 440

SELECT . . . . . . . . . . 441FROM . . . . . . . . . . . 445 . . . . . . . . . . . . 446 . . . . . . . . . . . . 450WHERE . . . . . . . . . . 452GROUP BY . . . . . . . . . 453HAVING . . . . . . . . . . 460

. . . . . . . . . . . . 461 . . . . . . . . . . . . . 464CUBE ROLLUP . . . . . . . . . . . . . . 468 . . . . . . . . . . . . . 477 . . . . . . . . . . . 480

. . . . . . . . . 482 . . . . . . . . . . . . 483ORDER BY . . . . . . . . . 486UPDATE . . . . . . . . . . 489READ ONLY . . . . . . . . 490FETCH FIRST . . . . . . . . 491OPTIMIZE FOR . . . . . . . 492 . . . . . . 493

6 SQL . . . . . . 495SQL . . . 499 . . . . . . . . 500 . . . . . . . . . 501 . . . 502 . . . 502 . . . . . . . . . 503 SQL 503

SQL . . . . . . . . . . 504SQLCODE . . . . . . . . . . . 504SQLSTATE . . . . . . . . . . . 505

SQL . . . . . . . . . . . 506ALTER BUFFERPOOL . . . . . . . . 507ALTER NICKNAME . . . . . . . . . 509ALTER NODEGROUP . . . . . . . . 513ALTER SEQUENCE . . . . . . . . . 517ALTER SERVER . . . . . . . . . . 521ALTER TABLE . . . . . . . . . . 525ALTER TABLESPACE . . . . . . . . 554ALTER TYPE () . . . . . . . . 560ALTER USER MAPPING . . . . . . . 567ALTER VIEW . . . . . . . . . . . 570BEGIN DECLARE SECTION . . . . . . 572CALL . . . . . . . . . . . . . . 575CLOSE . . . . . . . . . . . . . 583COMMENT . . . . . . . . . . . . 585COMMIT. . . . . . . . . . . . . 596 SQL () . . . . . . . . . . 598 SQL () . . . . . . . . 604CONNECT ( 1) . . . . . . . . 609CONNECT ( 2) . . . . . . . . 618CREATE ALIAS . . . . . . . . . . 626CREATE BUFFERPOOL. . . . . . . . 629CREATE DISTINCT TYPE . . . . . . . 632CREATE EVENT MONITOR . . . . . . 639CREATE FUNCTION. . . . . . . . . 649CREATE FUNCTION () . . . 650CREATE FUNCTION () . . . . . 675CREATE FUNCTION (OLE DB ) . . 691CREATE FUNCTION () . . . . . . . . . . . . . . 699CREATE FUNCTION (SQL ) . . . . . . . . . . . . 709CREATE FUNCTION MAPPING . . . . . 716CREATE INDEX . . . . . . . . . . 721CREATE INDEX EXTENSION . . . . . 728CREATE METHOD . . . . . . . . . 735CREATE NICKNAME . . . . . . . . 740CREATE NODEGROUP . . . . . . . . 746CREATE PROCEDURE . . . . . . . . 749CREATE SCHEMA . . . . . . . . . 766CREATE SEQUENCE . . . . . . . . 770CREATE SERVER . . . . . . . . . 775CREATE TABLE . . . . . . . . . . 779

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CREATE TABLESPACE . . . . . . . . 830CREATE TRANSFORM . . . . . . . . 840CREATE TRIGGER . . . . . . . . . 846CREATE TYPE () . . . . . . . 858CREATE TYPE MAPPING . . . . . . . 883CREATE USER MAPPING . . . . . . . 888CREATE VIEW . . . . . . . . . . 890CREATE WRAPPER . . . . . . . . . 906DECLARE CURSOR . . . . . . . . . 908DECLARE GLOBAL TEMPORARY TABLE 914DELETE . . . . . . . . . . . . . 923DESCRIBE . . . . . . . . . . . . 929DISCONNECT . . . . . . . . . . . 934DROP . . . . . . . . . . . . . . 937END DECLARE SECTION . . . . . . . 964EXECUTE . . . . . . . . . . . . 966EXECUTE IMMEDIATE. . . . . . . . 971EXPLAIN . . . . . . . . . . . . 974FETCH . . . . . . . . . . . . . 979FLUSH EVENT MONITOR. . . . . . . 982FREE LOCATOR . . . . . . . . . . 983GRANT () . . . . . . 984GRANT () . . . . . . . . . 987GRANT () . . . . . . . 989GRANT () . . . . . . . . 992GRANT () . . . . . . . 995GRANT () . . . . . . . . 996GRANT () . . . . . . . . . . . . . . . 998GRANT (). . . . . . . 1006INCLUDE . . . . . . . . . . . . 1008INSERT . . . . . . . . . . . . . 1010LOCK TABLE . . . . . . . . . . 1019OPEN . . . . . . . . . . . . . 1021PREPARE . . . . . . . . . . . . 1026REFRESH TABLE . . . . . . . . . 1037RELEASE () . . . . . . . . . . 1038RELEASE SAVEPOINT . . . . . . . 1040RENAME TABLE . . . . . . . . . 1041RENAME TABLESPACE . . . . . . . 1043REVOKE () . . . . . 1045REVOKE () . . . . . . . . 1049REVOKE () . . . . . . 1051REVOKE () . . . . . . . 1054REVOKE () . . . . . . . 1056

REVOKE () . . . . . . . . . . . . . . 1058REVOKE () . . . . . . 1064ROLLBACK . . . . . . . . . . . 1066SAVEPOINT . . . . . . . . . . . 1069SELECT. . . . . . . . . . . . . 1071SELECT INTO . . . . . . . . . . 1072SET CONNECTION . . . . . . . . . 1074SET CURRENT DEFAULT TRANSFORMGROUP . . . . . . . . . . . . . 1076SET CURRENT DEGREE . . . . . . . 1078SET CURRENT EXPLAIN MODE . . . . 1080SET CURRENT EXPLAIN SNAPSHOT . . 1083SET CURRENT PACKAGESET . . . . . 1085SET CURRENT QUERY OPTIMIZATION 1087SET CURRENT REFRESH AGE . . . . 1090SET ENCRYPTION PASSWORD . . . . 1092SET EVENT MONITOR STATE. . . . . 1094SET INTEGRITY. . . . . . . . . . 1096SET PASSTHRU . . . . . . . . . . 1106SET PATH . . . . . . . . . . . . 1108SET SCHEMA . . . . . . . . . . 1111SET SERVER OPTION. . . . . . . . 1113SET . . . . . . . . . . . . 1115UPDATE . . . . . . . . . . . . 1120VALUES . . . . . . . . . . . . 1130VALUES INTO . . . . . . . . . . 1131WHENEVER . . . . . . . . . . . 1133

7 SQL . . . . 1135SQL . . 1136ALLOCATE CURSOR . . 1138 . . . . . . . 1140ASSOCIATE LOCATORS 1142CASE . . . . . . . . 1144FOR . . . . . . . . 1147GET DIAGNOSTICS . . . 1149GOTO . . . . . . . . 1151IF . . . . . . . . . 1153ITERATE . . . . . . . 1155LEAVE . . . . . . . 1156LOOP . . . . . . . . 1158 () . . 1160REPEAT . . . . . . . 1166RESIGNAL . . . . . . 1168RETURN . . . . . . . 1171

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SIGNAL . . . . . . . 1173WHILE . . . . . . . 1176

A. SQL . . . . . . . 1179

B. SQL (SQLCA). . . . . . 1187SQLCA . . . . . . . . 1187SQLCA . . . . . . 1187 . . . . . . . . . 1191DB2 SQLCA . . . . . . . . . 1192

C. SQL (SQLDA) . . . . 1193 . . . . . . . . . 1194

SQLDA . . . . 1195 SQLVAR . . . . . . . . . . . . . . 1196 SQLVAR . . . . . . . . . . . . . . 1198

SQLDA DESCRIBE . . . 1201SQLTYPE SQLLEN . . . . . . . . 1203 SQLTYPE . . 1204 10 . . . . . . . . . 120510 SQLLEN . . . . 1206

D. . . . . . . . . 1207 . . . . . . . 1208 . . . . 1208 . . . . . . . . . . . . . . 1210SYSIBM.SYSDUMMY1. . . . . . . . 1212SYSCAT.ATTRIBUTES . . . . . . . . 1213SYSCAT.BUFFERPOOLNODES . . . . . 1215SYSCAT.BUFFERPOOLS . . . . . . . 1216SYSCAT.CASTFUNCTIONS . . . . . . 1217SYSCAT.CHECKS . . . . . . . . . 1218SYSCAT.COLAUTH . . . . . . . . . 1219SYSCAT.COLCHECKS . . . . . . . . 1220SYSCAT.COLDIST . . . . . . . . . 1221SYSCAT.COLOPTIONS. . . . . . . . 1222SYSCAT.COLUMNS. . . . . . . . . 1223SYSCAT.CONSTDEP . . . . . . . . 1228SYSCAT.DATATYPES . . . . . . . . 1229SYSCAT.DBAUTH . . . . . . . . . 1231SYSCAT.EVENTMONITORS . . . . . . 1233SYSCAT.EVENTS . . . . . . . . . 1235SYSCAT.FULLHIERARCHIES . . . . . 1236

SYSCAT.FUNCDEP . . . . . . . . . 1237SYSCAT.FUNCMAPOPTIONS . . . . . 1238SYSCAT.FUNCMAPPARMOPTIONS . . . 1239SYSCAT.FUNCMAPPINGS . . . . . . 1240SYSCAT.FUNCPARMS . . . . . . . . 1241SYSCAT.FUNCTIONS . . . . . . . . 1243SYSCAT.HIERARCHIES . . . . . . . 1248SYSCAT.INDEXAUTH . . . . . . . . 1249SYSCAT.INDEXCOLUSE . . . . . . . 1250SYSCAT.INDEXDEP . . . . . . . . 1251SYSCAT.INDEXES . . . . . . . . . 1252SYSCAT.INDEXOPTIONS . . . . . . . 1255SYSCAT.KEYCOLUSE . . . . . . . . 1256SYSCAT.NAMEMAPPINGS . . . . . . 1257SYSCAT.NODEGROUPDEF . . . . . . 1258SYSCAT.NODEGROUPS . . . . . . . 1259SYSCAT.PACKAGEAUTH. . . . . . . 1260SYSCAT.PACKAGEDEP . . . . . . . 1261SYSCAT.PACKAGES . . . . . . . . 1262SYSCAT.PARTITIONMAPS . . . . . . 1266SYSCAT.PASSTHRUAUTH . . . . . . 1267SYSCAT.PROCEDURES . . . . . . . 1268SYSCAT.PROCOPTIONS . . . . . . . 1271SYSCAT.PROCPARMOPTIONS . . . . . 1272SYSCAT.PROCPARMS . . . . . . . . 1273SYSCAT.REFERENCES. . . . . . . . 1275SYSCAT.REVTYPEMAPPINGS . . . . . 1276SYSCAT.SCHEMAAUTH . . . . . . . 1278SYSCAT.SCHEMATA . . . . . . . . 1279SYSCAT.SEQUENCES . . . . . . . . 1280SYSCAT.SERVEROPTIONS . . . . . . 1282SYSCAT.SERVERS . . . . . . . . . 1283SYSCAT.STATEMENTS . . . . . . . 1284SYSCAT.TABAUTH . . . . . . . . . 1285SYSCAT.TABCONST . . . . . . . . 1287SYSCAT.TABLES . . . . . . . . . 1288SYSCAT.TABLESPACES . . . . . . . 1292SYSCAT.TABOPTIONS. . . . . . . . 1294SYSCAT.TBSPACEAUTH . . . . . . . 1295SYSCAT.TRIGDEP . . . . . . . . . 1296SYSCAT.TRIGGERS. . . . . . . . . 1297SYSCAT.TYPEMAPPINGS. . . . . . . 1298SYSCAT.USEROPTIONS . . . . . . . 1300SYSCAT.VIEWDEP . . . . . . . . . 1301SYSCAT.VIEWS . . . . . . . . . . 1302SYSCAT.WRAPOPTIONS . . . . . . . 1303

ix

||

SYSCAT.WRAPPERS . . . . . . . . 1304SYSSTAT.COLDIST . . . . . . . . . 1305SYSSTAT.COLUMNS . . . . . . . . 1306SYSSTAT.FUNCTIONS . . . . . . . . 1308SYSSTAT.INDEXES . . . . . . . . . 1310SYSSTAT.TABLES . . . . . . . . . 1313

E. 1315 . . . . 1316OBJCAT.INDEXES . . . . . . . . . 1318OBJCAT.INDEXEXPLOITRULES . . . . 1321OBJCAT.INDEXEXTENSIONDEP . . . . 1322OBJCAT.INDEXEXTENSIONMETHODS 1323OBJCAT.INDEXEXTENSIONPARMS . . . 1324OBJCAT.INDEXEXTENSIONS . . . . . 1325OBJCAT.PREDICATESPECS . . . . . . 1326OBJCAT.TRANSFORMS . . . . . . . 1327

F. . . . . . . . . 1329 . . . . . . . . . 1329 SQL . . . 1330 . . . . . . . . . . 1331. . . . . 1332 . . . . . . . 1333 . . . . . . . 1339

1340DB2 DB2 (OS/390 ) ( DB2 (MVS/ESA)) . . . . . . . . 1340DB2 DB2 (AS/400 ) ( DB2 (AS/400)) . . . . . . . . 1340DB2 Oracle . . . . 1341DB2 DB2 (VM VSE ) ( SQL/DS) . . . . 1341

. . . . . . . . 1341 SQL . . . . . . . . . . . . . 1342. . . . . . . . 1342

G. . . . 1345 . . . . . . . 1346

. . . . 1346 . . . . 1347CL_SCHED . . . . . . . . . 1347DEPARTMENT . . . . . . . . 1347EMPLOYEE . . . . . . . . . 1347EMP_ACT . . . . . . . . . . 1350EMP_PHOTO . . . . . . . . . 1352EMP_RESUME . . . . . . . . 1352IN_TRAY . . . . . . . . . . 1353ORG . . . . . . . . . . . . 1353PROJECT . . . . . . . . . . 1353SALES . . . . . . . . . . . 1354STAFF . . . . . . . . . . . 1355STAFFG . . . . . . . . . . 1356

BLOB CLOB . . . . . . . . . 1357

Quintana . . . . . . . . . 1357Quintana . . . . . . . . 1358Nicholls . . . . . . . . . 1359Nicholls . . . . . . . . 1359Adamson . . . . . . . . . 1360Adamson . . . . . . . . 1361Walker . . . . . . . . . 1362Walker . . . . . . . . . 1362

H. . . . . 1365 . . . . . . . . . . . 1365 . . . . . . . . . . . . . 1365IBM SQL . . . . . . . . . 1366ISO/ANS SQL92 . . . . . . 1368

I. . . . . . . . 1369

J. . . . . 1371

K. Explain . . . . . . 1375EXPLAIN_ARGUMENT . . . . . . 1376EXPLAIN_INSTANCE . . . . . . . 1379EXPLAIN_OBJECT . . . . . . . . 1382EXPLAIN_OPERATOR . . . . . . . 1384EXPLAIN_PREDICATE . . . . . . 1386EXPLAIN_STATEMENT . . . . . . 1388EXPLAIN_STREAM . . . . . . . . 1390ADVISE_INDEX . . . . . . . . . 1392ADVISE_WORKLOAD . . . . . . . 1394Explain . . . . . . . . . . 1395

EXPLAIN_ARGUMENT . . . 1396

x SQL

EXPLAIN_INSTANCE . . . . 1397EXPLAIN_OBJECT . . . . . 1398EXPLAIN_OPERATOR . . . 1399EXPLAIN_PREDICATE . . . 1400EXPLAIN_STATEMENT . . . 1401EXPLAIN_STREAM . . . . 1402ADVISE_INDEX . . . . . 1403ADVISE_WORKLOAD . . . 1405

L. Explain . . . . 1407

M. : . . . . . 1411 1: . . . . . . . 1411 2: . . . . . . . . . 1413 3: . . . . . . . . . 1414

N. . . . . . . . . . . 1417 . . . . . . . . . 1417 . . . . . . . . . 1419 . . . . . . . . . . . 1420

O. EUC . . . . . . . . 1423 . . . . . . . . . . 1423 . . . . . . . . . . . . . 1423 . . . . . . . . . . . 1423ID . . . . . . . . . . . . . 1424 . . . . . . . . . 1424 . . . . . . . . . 1424 . . . . . 1425 . . . . . . . 1425 . . . . . . . . . . . . . 1426 . . . . . . . . . . . . . 1426. . . . . . . . . . . . . . 1427

. . . . . . . . . . . . . 1427 . . . . . . . . . . . . . . 1428

LENGTH . . . . . . . . . . . 1428SUBSTR . . . . . . . . . . . 1428TRANSLATE . . . . . . . . . . 1428VARGRAPHIC . . . . . . . . . 1429

. . . . . . . . . . 1429CONNECT . . . . . . . . . . . 1429PREPARE . . . . . . . . . . . 1429

P. DATALINK BNF . . . 1431

Q. . . . . . . . . . . 1435

R. DB2 . . . 1549DB2 PDF . . . . . . . . . . . . . . . 1549

DB2 . . . . . . . . . . . 1549PDF . . . . . . . . . 1561. . . . . . . . 1561

DB2 . . . . . . . . 1561 . . . 1561 . . . . . . . 1564DB2 . . . . . . 1566. . . . . 1568 . . . . . . . 1569

S. . . . . . . . . . 1571 . . . . . . . . . . . . . . 1574

. . . . . . . . . . . . . . 1577

IBM . . . . . . . . . 1615 . . . . . . . . . . . . 1615

xi

xii SQL

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v CASCADE D p v SET NULL D p

2 19

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20 SQL

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2 27

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4 096

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|

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42 SQL

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v CONNECT TO

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2 43

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7.

44 SQL

|

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v CONNECT CONNECT

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|

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v CONNECT SQLRULES(STD) SQLRULES 50

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v v v

48 SQL

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SQLRULES(STD) (SQLSTATE 08002)

v : RELEASE () RELEASE ROLLBACK

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2 49

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2 API

v CONNECT (1 | 2)CONNECT 1 2

v SQLRULES (DB2 | STD) 2 CONNECT CONNECT DB2 SQL92 (STD)

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7. CONDITIONAL 2 WITH HOLD

50 SQL

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(SQLSTATE 58005) 1 (SQLSTATE 40003)

SET CLIENT (API) QUERY CLIENT API SQL API API

DRDA IBM (CDRA) Character Data Representation Architecture: Reference & Registry(SC09-2190-00)

DB2 DB2

DB2 DB2

v DB2 DB2 DB2

v RDBMS 1 1 DB2 Oracle DB2

2 51

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Oracle Oracle Oracle DB2 () Oracle

DB2 SQL DB2 DB2 () DB2

() SQL

DB2 ( )

DBA

DB2

1. DB2 DBA

2. DBA

a. DBA

52 SQL

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b. DBA 1 54

c. DBA 54

d. ID ID DBA 2 ID 57

e. DB2 DBA 2 (1 1 ) 58

f. DB2 DBA 2 (1 1 ) 58

g. DBA ID 59

h. : DBA DBA DBA DB2 60

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2 53

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DB2 SQL SQL 62

v DB2 SQL SQL DML 8 DDL 9 62

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v DRDA DB2

v SQLNET Oracle SQL*Net Oracle

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CREATE WRAPPER 906CREATE WRAPPER

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v 3

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54 SQL

||||

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v DBA v SQL

3 SQL DB2

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v NODE

2 55

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DB2 DBNAME

v SQL CREATE SERVER SQL ALTER SERVER

SQL CREATE SERVERALTER SERVER SET SERVER OPTION

CREATE SERVER ALTER SERVER DBA CREATE SERVER Oracle DBA DBA CREATE SERVER COLLATING_SEQUENCE Y () Y Oracle

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56 SQL

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SET SERVER OPTION N Y () Y

775CREATE SERVER 521ALTERSERVER 1113SET SERVER OPTION 1333

v ID

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2 57

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DB2 Oracle FLOAT DB2 DOUBLE DB2 (OS/390 ) DATE DB2 DATE DB2 LONG VARCHARLONG VARGRAPHIC DATALINK (LOB)

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CREATE TYPE MAPPING 1 ALTER NICKNAME

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58 SQL

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2 59

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60 SQL

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1 NICK1 NICK1 1 NICK2 NICK2

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2 61

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3 83

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86 SQL

||||||

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12:01 AM 12:59 AM 00:01:00 00:59:00

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92 SQL

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96 SQL

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102 SQL

|||||||

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2 114

104

106 SQL

MBCS SBCS/MBCS (SYSTEM) 1 ASCII 2 IDENTITY 2 1 ASCII COMPATIBILITY 2 ASCII DB2 2

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TIME

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:

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WITH COMPARISONS

:

YOUTH CAMP_DB2_ROSTER

108 SQL

CREATE DISTINCT TYPE YOUTH AS INTEGER WITH COMPARISONS

CREATE TABLE CAMP_DB2_ROSTER( NAME VARCHAR(20),

ATTENDEE_NUMBER INTEGER NOT NULL,AGE YOUTH,HIGH_SCHOOL_LEVEL YOUTH)

SELECT * FROM CAMP_DB2_ROSTERWHERE AGE > HIGH_SCHOOL_LEVEL

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CAST AGE ATTENDEE_NUMBER

SELECT * FROM CAMP_DB2_ROSTERWHERE INTEGER(AGE) > ATTENDEE_NUMBER

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(NULL TYPE )

3 109

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CHAR(2) UNION CHAR(4) UNION VARCHAR(3)

CHAR(4) 4 VARCHAR(4) UNION 4

CHARVARCHARLONG VARCHAR CLOB

CHAR(x) CHAR(y) CHAR(z) z = max(x,y)

CHAR(x) VARCHAR(y) VARCHAR(z) z = max(x,y)

VARCHAR(x) CHAR(y) VARCHAR(y)

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110 SQL

LONG VARCHAR CHAR(y)VARCHAR(y)LONG VARCHAR

LONG VARCHAR

CLOB(x) CHAR(y)VARCHAR(y) CLOB(y)

CLOB(z) z = max(x,y)

CLOB(x) LONG VARCHAR CLOB(z) z = max(x,32700)

114

GRAPHICVARGRAPHICLONG VARGRAPHIC DBCLOB

GRAPHIC(x) GRAPHIC(y) GRAPHIC(z) z = max(x,y)

VARGRAPHIC(x) GRAPHIC(y) VARGRAPHIC(y)

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LONG VARGRAPHIC GRAPHIC(y)VARGRAPHIC(y) LONGVARGRAPHIC

LONG VARGRAPHIC

DBCLOB(x) GRAPHIC(y)VARGRAPHIC(y) DBCLOB(y)

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DBCLOB(x) LONG VARGRAPHIC DBCLOB(z) z =max(x,16350)

114

2 (BLOB)BLOB BLOB BLOB BLOB (263BLOB) BLOB BLOB

3 111

SMALLINTINTEGERBIGINTDECIMALREAL DOUBLE

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BIGINT INTEGER BIGINT

BIGINT SMALLINT BIGINT

DECIMAL(w,x) SMALLINT DECIMAL(p,x)p = x+max(w-x,5)1

DECIMAL(w,x) INTEGER DECIMAL(p,x)p = x+max(w-x,11)1

DECIMAL(w,x) BIGINT DECIMAL(p,x)p = x+max(w-x,19)1

DECIMAL(w,x) DECIMAL(y,z) DECIMAL(p,s)p = max(x,z)+max(w-x,y-z)1s

= max(x,z)

REAL REAL REAL

REAL DECIMALBIGINTINTEGERSMALLINT

DOUBLE

DOUBLE DOUBLE

: 1. 31

DATE () CHAR VARCHAR DATE

TIME () CHAR VARCHAR TIME

112 SQL

TIMESTAMP () CHAR VARCHAR TIMESTAMP

DATALINK ()DATALINK DATALINK

A/ \B C/ \D E/ \F G

E F B E F

INTERSECT EXCEPT 2

3 113

v INTERSECT ()

v EXCEPT ()

v (UNIONINTERSECT EXCEPT)

v v (LIKE )v CASE v COALESCE ( VALUE) v IN v VALUES

SQLWARN10 SQLCA W

2 ()

v v BIT DATA ( 0) BIT

DATA

v 1158 2 2

114 SQL

8.

1

2

1 1 1 1 1

2 1 1 1 1

2 2 1 1 1

2 2 1 1 1

2 2 2 2 1

CAST () 1 CAST 1

(A CONCAT B )

v v COALESCE ( VALUE) v CASE v IN v VALUES v

v v BIT DATA v v

3 115

1:

COL_1 850

HV_2 437

COL_1 CONCAT :HV_2

COL_1 2 850

2:

COALESCE(COL_1, :HV_2:NULLIND,)

850 COALESCE 850

2 ( 1 )

1179

v DATETIME TIMESTAMP CHAR

v NOT NULL FOR BIT DATA

v NULL NULL

v UDT v

v (CHARVARCHARGRAPHIC VARGRAPHIC)

116 SQL

v CHAR VARCHAR v REAL DOUBLE

9.

2

10

2 Yes No No No No No No No 1 No

10 No Yes No No No No No No 1 No

No No Yes No No No No No 1 No

3

No No No Yes2 No No No No 1 No

3

No No No No Yes No No No 1 No

No No No No No Yes No No 1 No

No No No No No No Yes No 1 No

No No No No No No No Yes 1 No

1 1 1 1 1 1 1 1 1 No

3No No No No No No No No No No

:

1 (UDT) UDT UDT

2 FOR BIT DATA

3 LONG VARCHARLONG VARGRAPHICCLOB DBCLOB BLOB

( ) 10

NOT NULL

(-0) (0)

3 117

19 (large integer) (big integer) 10

-2 147 483 647 -2 147 483 648 -9 223 372 036 854 775 807 -9 223 372 036 854 775 808 ()

64 -15 +100 32767 720176 12345678901

'integer' ()

E 2 2 2 10 30

15E1 2.E5 2.2E-1 +5.E+2

10 10 31 2 10 10 () ()

25.5 1000. -15. +37589.3333333333

(')

118 SQL

32 672 1 2

'12/14/1985''32''DON''T CHANGE'

FOR BIT DATA FOR BIT DATA

16 16

16 X () 16 16 16 336 (SQLSTATE -54002) 1 16 4 A F () A 1010 B 1011 16 ( 16 16 ) (SQLSTATE 42606)

X'FFFF' '1111111111111111'

X'4672616E6B' ASCII 'Frank' VARCHAR

G N (') 2 16 336

3 119

:

G''N''

MBCS MBCS ()

( 176CAST)108 14

SELECT * FROM CAMP_DB2_ROSTERWHERE AGE > CAST(14 AS YOUTH)

SELECT * FROM CAMP_DB2_ROSTERWHERE CAST(AGE AS INTEGER) > 14

SELECT * FROM CAMP_DB2_ROSTERWHERE AGE > 14

SQL

CLIENT ACCTNGCLIENT ACCTNG VARCHAR(255)

Set Client Information (sqleseti) API

sqleseti API

120 SQL

|

|||

||

||

VALUES (CLIENT ACCTNG)INTO :ACCT_STRING

CLIENT APPLNAMECLIENT APPLNAME VARCHAR(255)

Set Client Information (sqleseti) API

sqleseti API

SELECT DEPTFROM DEPT_APPL_MAPWHERE APPL_NAME = CLIENT APPLNAME

CLIENT USERIDCLIENT USERID ID VARCHAR(255)

Set Client Information (sqleseti) API ID

sqleseti API

ID

3 121

||

||

||

|

|||

||

||||

||

|||

|

|||

||

||||

||

SELECT DEPTFROM DEPT_USERID_MAPWHERE USER_ID = CLIENT USERID

CLIENT WRKSTNNAMECLIENT WRKSTNNAME VARCHAR(255)

Set Client Information (sqleseti) API

sqleseti API

VALUES (CLIENT WRKSTNNAME)INTO :WS_NAME

CURRENT DATECURRENT DATE SQL SQL CURRENT TIME CURRENT TIMESTAMP 1

CURRENT DATE CURRENTDATE

PROJECT MA2111 (PROJNO) (PRENDATE) CURRENT DATE

UPDATE PROJECTSET PRENDATE = CURRENT DATEWHERE PROJNO = 'MA2111'

122 SQL

|||

|

|||

||

||||

||

||

|

CURRENT DEFAULT TRANSFORM GROUPCURRENT DEFAULT TRANSFORM GROUP VARCHAR (18) SQL SQL

SET CURRENT DEFAULT TRANSFORM GROUP ( VARCHAR)

SQL () (SET CURRENT DEFAULT TRANSFORM GROUP )DB2_PROGRAM DB2_PROGRAM (SQLSTATE 42741)

MYSTRUCT1 MYSTRUCT1 TO SQL FROM SQL

SET CURRENT DEFAULT TRANSFORM GROUP = MYSTRUCT1

VALUES (CURRENT DEFAULT TRANSFORM GROUP)

CURRENT DEGREECURRENT DEGREE SQL 13 CHAR(5)ANY 1 32 767 ()

SQL CURRENTDEGREE 1

13. SQL DEGREE

3 123

SQL CURRENTDEGREE 2 32 767

SQL CURRENT DEGREE ANY

v (max_querydegree) v v SQL

intra_parallel NO CURRENT DEGREE

SET CURRENT DEGREE ( 1078SET CURRENT DEGREE)

CURRENT DEGREE dft_degree

CURRENT EXPLAIN MODECURRENT EXPLAIN MODE SQL Explain VARCHAR(254) Explain Explain ( )Explain

YESNOEXPLAINRECOMMEND INDEXES EVALUATEINDEXES 14

YES Explain SQL Explain

14. SQL EXPLAIN PREP BIND EXPLAIN YESNO ALL

124 SQL

EXPLAINYES

NO Explain

RECOMMEND INDEXES ADVISE_INDEX

EVALUATE INDEXES Explain ADVISE_INDEX

NO

SET CURRENT EXPLAIN MODE ( 1080SET CURRENT EXPLAINMODE)

CURRENT EXPLAIN MODE CURRENT EXPLAIN SNAPSHOT Explain ( 1407145 ) CURRENT EXPLAIN MODE EXPLAIN (1408146 ) RECOMMEND INDEXES EVALUATEINDEXES CURRENT EXPLAIN MODE SET CURRENT EXPLAIN MODE

: EXPL_MODE (VARCHAR(254)) CURRENT EXPLAIN MODE

VALUES CURRENT EXPLAIN MODEINTO :EXPL_MODE

CURRENT EXPLAIN SNAPSHOTCURRENT EXPLAIN SNAPSHOT Explain CHAR(8) ( )

DELETEINSERTSELECTSELECT INTOUPDATEVALUES VALUESINTO

3 125

YESNO EXPLAIN 15

YES SQL

EXPLAINYES

NO Explain

NO

SET CURRENT EXPLAIN SNAPSHOT ( 1083SET CURRENTEXPLAIN SNAPSHOT)

CURRENT EXPLAIN SNAPSHOT CURRENT EXPLAIN MODE Explain ( 1407145 ) CURRENT EXPLAIN SNAPSHOT EXPLSNAP ( 1409147 )

EXPL_SNAP (char(8)) CURRENT EXPLAIN SNAPSHOT

VALUES CURRENT EXPLAIN SNAPSHOTINTO :EXPL_SNAP

CURRENT NODECURRENT NODE () INTEGER

CURRENT NODE (db2nodes.cfg ) 0 16

CURRENT NODE CONNECT (609CONNECT ( 1))

15. SQL EXPLSNAP PREP BIND EXPLSNAP YESNO ALL

16.db2nodes.cfg ()

126 SQL

APPL_NODE()

VALUES CURRENT NODEINTO :APPL_NODE

CURRENT PATHCURRENT PATH SQL VARCHAR(254) SQL 17 CURRENT PATH CALL SQL FUNCPATH SQL (FUNCPATH )

CURRENT PATH 1 ( ID )

FERMAT XGRAPHIC SYSIBM SQL CURRENT PATH

"FERMAT","XGRAPHIC","SYSIBM"

SYSIBMSYSFUNX X USER

SET CURRENT FUNCTION PATH (1108SET PATH ) SYSIBM SQL 1 SYSIBM 254

SQL 146SQL CREATE DISTINCT TYPECREATEFUNCTIONCOMMENT ON DROP

17. CURRENT FUNCTION PATH CURRENT PATH

3 127

SYSCAT.VIEWS CURRENT PATH

SELECT VIEWNAME, VIEWSCHEMA FROM SYSCAT.VIEWSWHERE FUNC_PATH = CURRENT PATH

CURRENT QUERY OPTIMIZATIONCURRENT QUERY OPTIMIZATION SQL INTEGER QUERYOPT SQL (QUERYOPT ) 0 9 (0) 0 dft_queryopt

SET CURRENT QUERY OPTIMIZATION (1087SET CURRENT QUERY OPTIMIZATION)

SYSCAT.PACKAGES CURRENT QUERYOPTIMIZATION

SELECT PKGNAME, PKGSCHEMA FROM SYSCAT.PACKAGESWHERE QUERYOPT = CURRENT QUERY OPTIMIZATION

CURRENT REFRESH AGECURRENT REFRESH AGE DECIMAL(20,6) REFRESH DEFERRED REFRESH TABLE CURRENT REFRESH AGE 99 999 999 999 999 (ANY) QUERY OPTIMIZATION 5 REFRESH DEFERRED SQL REFRESH IMMEDIATE

SET CURRENT REFRESH AGE (1090SET CURRENT REFRESH AGE)REFRESH DEFERRED SQL

CURRENT REFRESH AGE

128 SQL

CURRENT SCHEMACURRENT SCHEMA SQL VARCHAR(128) 18

CURRENT SCHEMA ID

SET SCHEMA (1111SET SCHEMA)

QUALIFIER SQL ( )

D123

SET CURRENT SCHEMA = 'D123'

CURRENT SERVERCURRENT SERVER VARCHAR(18) ()

CURRENT SERVER CONNECT (609CONNECT ( 1))

APPL_SERVE (VARCHAR(18))

VALUES CURRENT SERVERINTO :APPL_SERVE

CURRENT TIMECURRENT TIME SQL SQL CURRENT DATE CURRENT TIMESTAMP 1

18. DB2 (OS/390 ) CURRENT SQLID CURRENT SCHEMA

3 129

CURRENT TIME CURRENTTIME

CL_SCHED (STARTING) (CLASS_CODE) DAY 3

SELECT CLASS_CODE FROM CL_SCHEDWHERE STARTING > CURRENT TIME AND DAY = 3

CURRENT TIMESTAMPCURRENT TIMESTAMP SQL SQL CURRENT DATE CURRENT TIME 1

CURRENTTIMESTAMP CURRENT TIMESTAMP

1 IN_TRAY RECEIVED 3 SRC(char(8))SUB (char(64)) TXT (VARCHAR(200))

INSERT INTO IN_TRAYVALUES (CURRENT TIMESTAMP, :SRC, :SUB, :TXT)

CURRENT TIMEZONECURRENT TIMEZONE UTC19 ( 2 2 2 10 ) -24 24 -24 24 CURRENT TIMEZONE UTC SQL 20

19. (Coordinated Universal Time) GMT

20. CURRENT TIMEZONE C

130 SQL

CURRENT TIMEZONE DECIMAL(6,0)

RECEIVED UTC IN_TRAY

INSERT INTO IN_TRAY VALUES (CURRENT TIMESTAMP - CURRENT TIMEZONE,:source,:subject,:notetext )

USERUSER ID VARCHAR(128)

IN_TRAY

SELECT * FROM IN_TRAYWHERE SOURCE = USER

v (CREATE TABLE )v (CREATE INDEX )v ()

(4395 ) MAX(SALARY) SALARY MAX

GROUP BY ORDER BY ORDER BY DEPT DEPT

CODE = 20 CODE CODE

v FROM table-reference correlation-clause

3 131

v COMMENT ON

v v UPDATE

v

2 134 136

FROM UPDATE DELETE 1 FROM X.MYTABLE Z Z X.MYTABLE

FROM X.MYTABLE Z

X.MYTABLE Z SELECT Z X.MYTABLE

X.MYTABLE

EMPLOYEE.PROJECT EMPLOYEE

132 SQL

||

:

FROM EMPLOYEE EWHERE EMPLOYEE.PROJECT='ABC' * *

PROJECT E EMPLOYEE

FROM EMPLOYEE EWHERE E.PROJECT='ABC'

FROM FROM FROM EMPLOYEE DEPARTMENT DEPARTMENT EMPLOYEE

FROM EMPLOYEE E, DEPARTMENT

FROM FROM FROM (SQLSTATE 42702)

2 FROM EMPLOYEE 2 FROM

1. FROM

FROM EMPLOYEE E1, EMPLOYEE

EMPLOYEE.PROJECT FROM EMPLOYEE 2 EMPLOYEE 1 E1 (E1.PROJECT)

2. FROM

FROM EMPLOYEE, EMPLOYEE E2

EMPLOYEE.PROJECT FROM EMPLOYEE 1 EMPLOYEE 2 E2 (E2.PROJECT)

3. FROM

FROM EMPLOYEE, EMPLOYEE

3 133

2 (EMPLOYEE EMPLOYEE) (SQLSTATE 42702)

4.

SELECT *FROM EMPLOYEE E1, EMPLOYEE E2 * *WHERE EMPLOYEE.PROJECT = 'ABC'

EMPLOYEE.PROJECT FROM EMPLOYEE 2 PROJECT (E1.PROJECT E2.PROJECT)

5. FROM

FROM EMPLOYEE, X.EMPLOYEE

EMPLOYEE 2 X.EMPLOYEE (X.EMPLOYEE.PROJECT) X SQL CURRENT SCHEMA SQL QUALIFIER /

FROM

FROM

FROM DEPARTMENT D (NUM,NAME,MGR,ANUM,LOC)

D.NUM DEPTNO DEPARTMENT FROM D.DEPTNO DEPTNO

GROUP BY ORDER BY 1 SQL SQL SQL

134 SQL

FROM table-references table-references

SELECT FROM

SELECT CORZ.COLA, OWNY.MYTABLE.COLAFROM OWNX.MYTABLE CORZ, OWNY.MYTABLE

FROM

v CORZ CORZ

v OWNY.MYTABLE 2 OWNY.MYTABLE

FROM

1

v v

v 2

v FROM

v TABLE table-reference

3 135

1. ID CORPDATA

SELECT CORPDATA.EMPLOYEE.WORKDEPTFROM EMPLOYEE

2. ID REGION

SELECT CORPDATA.EMPLOYEE.WORKDEPTFROM EMPLOYEE * *

EMPLOYEE REGION.EMPLOYEE WORKDEPT CORPDATA.EMPLOYEE

SQL 14395 FROM

SQL

1

SQL

136 SQL

TABLE

2

T C T.C ( T )

v T.C v T from v T

T 2 (T ) T.C T.C T

T.C 2 1 2 T C 2 WHERE 2 2 HAVING 2 (4395 WHERE HAVING )

() X.WORKDEPT FROM EMPLOYEE WORKDEPT ( X EMPLOYEE )

SELECT EMPNO, LASTNAME, WORKDEPTFROM EMPLOYEE XWHERE SALARY < (SELECT AVG(SALARY)

FROM EMPLOYEEWHERE WORKDEPT = X.WORKDEPT)

3 137

THIS

DELETE FROM DEPARTMENT THISWHERE NOT EXISTS(SELECT *

FROM EMPLOYEEWHERE WORKDEPT = THIS.DEPTNO)

v C C++ COBOL FORTRAN Java

v SQL SQL

SQL SQL

SQL

SQL REXX SQL DECLARE ( SQL ) SQL DECLARE SQL DECLARE SQL DECLARE BEGIN DECLARE SECTION END DECLARE SECTION

host-variable () VALUES INTO FETCH SELECT INTO INTO

SQL SQL (?) SQL

138 SQL

SQL SQL

INSERT INTO DEPARTMENTVALUES (:hv_deptno, :hv_deptname, :hv_mgrno, :hv_admrdept)

SQL

INSERT INTO DEPARTMENT VALUES (?, ?, ?, ?)

1026PREPARE

host-variable () :host-identifier

INDICATOR:host-identifier

host-identifier ( ID) 2 ID

ID (host-identifier) ID

2 host-identifier ( ID)

v -2

v ()

v

:HV1:HV2 HV2 HV2 HV1

3 139

:HV1:HV2 VALUES INTO FETCH SELECT INTOHV1 HV2 21 HV1 HV2 ( HV1 LOB HV2 )HV2

2 ID :HV1 HV1 INTO

SQL SELECT DECLARE CURSOR OPEN

PROJECT (PROJNO) IF1000 PNAME (VARCHAR(26)) (PROJNAME) STAFF(dec(5,2)) (PRSTAFF) MAJPROJ (char(6)) (MAJPROJ) PRSTAFF MAJPROJ STAFF_IND () MAJPROJ_IND ()

SELECT PROJNAME, PRSTAFF, MAJPROJINTO :PNAME, :STAFF :STAFF_IND, :MAJPROJ :MAJPROJ_INDFROM PROJECTWHERE PROJNO = 'IF1000'

MBCS :

21. DFT_SQLMATHWARN yes ( SQL ) HV2 -2 HV2 -2 HV1 HV1 HV1 DB2 5 HV2 -1

140 SQL

BLOBCLOB DBCLOB BLOBCLOB DBCLOB LOB () LOB (142BLOBCLOB DBCLOB ) LOB host-variable () SQL REXX LOB

LOB ( LOB 79 (LOB) )

SQL SQL

locator-variable () locator-variable () host-variable() host-identifier ( ID)

LOB

3 141

(SQLSTATE0F001)

BLOBCLOB DBCLOB BLOBCLOB DBCLOB LOB SQL REXX LOB

LOB LOB LOB 1

BLOBCLOB DBCLOB

()

v (EXECUTE OPEN UPDATE INSERT DELETE )

v (FETCH SELECTINTO )

v ()v

1

142 SQL

1 INTEGER 1

v ()

SQL_FILE_READ 22

v ()

SQL_FILE_CREATE 23

SQL_FILE_OVERWRITE () 24

SQL_FILE_APPEND 25

22. COBOL SQL-FILE-READFORTRAN sql_file_readREXX READ

23. COBOL SQL-FILE-CREATEFORTRAN sql_file_createREXX CREATE

24. COBOL SQL-FILE-OVERWRITEFORTRAN sql_file_overwriteREXX OVERWRITE

25. COBOL SQL-FILE-APPENDFORTRAN sql_file_appendREXX APPEND

3 143

(C )

v EXEC SQL BEGIN DECLARE SECTION

SQL TYPE IS CLOB_FILE hv_text_file;char hv_patent_title[64];

EXEC SQL END DECLARE SECTION

EXEC SQL BEGIN DECLARE SECTION/* SQL TYPE IS CLOB_FILE hv_text_file; */struct {

unsigned long name_length; // File Name Lengthunsigned long data_length; // Data Lengthunsigned long file_options; // File Optionschar name[255]; // File Name

} hv_text_file;char hv_patent_title[64];

EXEC SQL END DECLARE SECTION

CLOB :hv_text_file

strcpy(hv_text_file.name, "/u/gainer/papers/sigmod.94");hv_text_file.name_length = strlen("/u/gainer/papers/sigmod.94");hv_text_file.file_options = SQL_FILE_CREATE;

EXEC SQL SELECT content INTO :hv_text_file from papersWHERE TITLE = 'The Relational Theory behind Juggling';

(C )

v :hv_text_file CLOB

strcpy(hv_text_file.name, "/u/gainer/patents/chips.13");hv_text_file.name_length = strlen("/u/gainer/patents/chips.13");hv_text_file.file_options = SQL_FILE_READ:strcpy(:hv_patent_title, "A Method for Pipelining Chip Consumption");

EXEC SQL INSERT INTO patents( title, text )VALUES(:hv_patent_title, :hv_text_file);

144 SQL

FORTRANREXX Java SQL

v TRANSFORM GROUP FROM SQL

v TRANSFORM GROUP TO SQL

SQLDA SQLDA SQLVAR 2 2 SQLVAR SQLDATATYPE_NAME SQLDA (SQLSTATE 07002)1193C. SQL (SQLDA)

C ( BLOB(1048576) POLYGON ) hv_poly hv_point

EXEC SQL BEGIN DECLARE SECTION;static SQL

TYPE IS POLYGON AS BLOB(1M)hv_poly, hv_point;

EXEC SQL END DECLARE SECTION;

3 145

TIMESTAMP DATE TIME TIMESTAMP

v 1 SYSIBM AVG + DECIMAL cast SUBSTR

v SYSCAT.FUNCTIONS (CREATE FUNCTION ) SYSIBM 1 SYSFUN

DB2

SYSIBM SYSFUN 21815

SQL SQL SQL SQL RETURN SQL

146 SQL

SUBSTR() UDF

() DB2 AVG() UDF DB2 UDF SHOESIZE INTEGER AVG(INTEGER) UDF AVG(SHOESIZE)

SQL

SQL SELECT FROM DB2 SQL DB2 WWW Lotus NotesSQL ()

1 2 ()SQL 2

3 147

SQL () SQL SQL SQL SQL FUNCPATH ( ) SQL SQL CURRENT PATH (127CURRENT PATH)

SQL () () ()

SQL

1. RISKTEST

TEST.RISK(INTEGER)TEST.RISK(DOUBLE)

SQL TEST (DB DOUBLE )

SELECT ... RISK(DB) ...

148 SQL

2 RISK

(SI SMALLINT )

SELECT ... RISK(SI) ...

RISK SMALLINT INTEGER DOUBLE (925 )

2. 2 (C CHAR(5))

SELECT ... RISK(C) ...

RISK

3. SQL RANDOM

TEST.RANDOM(INTEGER)PROD.RANDOM(INTEGER)

SQL

"TEST","PROD"

SELECT ... RANDOM(432) ...

TEST.RANDOM RANDOM () SQL TEST PROD

()

3 149

1. (SYSCAT.FUNCTIONS)

a. ()

b. () SQL 1

c.

d. (92)

2. 925 FOR BIT DATA DECIMAL(9,1) DECIMAL(6,5) VARCHAR(19) VARCHAR(6)

() ()

3. 2 2 ()SQL

4. 2 (SQLSTATE42884)

SYSIBM SYSFUN SYSIBM SYSFUN ( SYS )

150 SQL

1 SYSIBM SYSIBM

SQL

"SHAREFUN","SYSIBM","SYSFUN"

SYSIBM.LENGTH LENGTH SHAREFUN SQL LENGTH SHAREFUN.LENGTH SQL

"SHAREFUN","SYSFUN"

SHAREFUN.LENGTH SQL LENGTH SYSIBM.LENGTH SYSIBM SYSIBM 1

v

v

3 7 ACT ()

CREATE FUNCTION AUGUSTUS.ACT (CHAR(5), INT, DOUBLE) SPECIFIC ACT_1 ...CREATE FUNCTION AUGUSTUS.ACT (INT, INT, DOUBLE) SPECIFIC ACT_2 ...CREATE FUNCTION AUGUSTUS.ACT (INT, INT, DOUBLE, INT) SPECIFIC ACT_3 ...CREATE FUNCTION JULIUS.ACT (INT, DOUBLE, DOUBLE) SPECIFIC ACT_4 ...CREATE FUNCTION JULIUS.ACT (INT, INT, DOUBLE) SPECIFIC ACT_5 ...CREATE FUNCTION JULIUS.ACT (SMALLINT, INT, DOUBLE) SPECIFIC ACT_6 ...CREATE FUNCTION NERO.ACT (INT, INT, DEC(7,2)) SPECIFIC ACT_7 ...

(I1 I2 INTEGER D DECIMAL )

SELECT ... ACT(I1, I2, D) ...

3 151

||

SQL

"JULIUS","AUGUSTUS","CAESAR"

v NERO SQL ACT_7 v ACT_3 1 1 ACT_1 ACT_6

v v ACT_2ACT_4 ACT_5

v 2 ACT_2 ACT_5 ACT_4 ACT_4 ACT_2 ACT_5

v 3 ACT_2 ACT_5

v ACT_2 ACT_5 2 SQL ACT_5

STEP

STEP(SMALLINT) returns CHAR(5)STEP(DOUBLE) returns INTEGER

(S SMALLINT )

SELECT ... 3 + STEP(S) ...

STEP CHAR(5)

152 SQL

|

|||

|

|||

|||

||

||||

1. FROM

2.

(96)

() ( ) ADDRESS CITY VARCHAR ADDRESS ( ADDRESS )

CITY ADDRESS

CREATE TYPE ( ALTER TYPE ADD METHOD) CREATE METHOD SYSCAT.FUNCTIONS

DB2

3 153

SQL SQL SQL SQL SQL

(SELF AS RESULT)

v v

v ()

2 () 2

154 SQL

() WITHFUNCTION ACCESS

()

SQL ()

() () ()

()

1. SITE RISK

PROXIMITY(INTEGER) FOR SITEPROXIMITY(DOUBLE) FOR SITE

(ST SITE DB DOUBLE )

SELECT ST..PROXIMITY(DB) ...

3 155

2 PROXIMITY

(SI SMALLINT )

SELECT ST..PROXIMITY(SI) ...

PROXIMITY SMALLINT INTEGER DOUBLE

2. 2 (C CHAR(5))

SELECT ST..PROXIMITY(C) ...

PROXIMITY

3. SITE DRILLSITE (SITE ) RISK

RISK(INTEGER) FOR DRILLSITERISK(DOUBLE) FOR SITE

(DRST DRILLSITE DB DOUBLE )

SELECT DRST..RISK(DB) ...

DRILLSITE SITE 2 RISK

(SI SMALLINT )

SELECT DRST..RISK(SI) ...

RISK SMALLINT INTEGER ( DOUBLE ) DRILLSITE SITE

156 SQL

1. (SYSCAT.FUNCTIONS)

v

v v (92)

2. () SELF ADDRESS_T ADDRESS_T

925

FOR BIT DATA DECIMAL(9,1) DECIMAL(6,5) VARCHAR(19) VARCHAR(6)

() ()

3. 2 1

4. 2 (SQLSTATE42884)

3 157

GOVERNOR 3 HEADOFSTATE EMPEROR 7 FOO

CREATE METHOD FOO (CHAR(5), INT, DOUBLE) FOR HEADOFSTATE SPECIFIC FOO_1 ...CREATE METHOD FOO (INT, INT, DOUBLE) FOR HEADOFSTATE SPECIFIC FOO_2 ...CREATE METHOD FOO (INT, INT, DOUBLE, INT) FOR HEADOFSTATE SPECIFIC FOO_3 ...CREATE METHOD FOO (INT, DOUBLE, DOUBLE) FOR EMPEROR SPECIFIC FOO_4 ...CREATE METHOD FOO (INT, INT, DOUBLE) FOR EMPEROR SPECIFIC FOO_5 ...CREATE METHOD FOO (SMALLINT, INT, DOUBLE) FOR EMPEROR SPECIFIC FOO_6 ...CREATE METHOD FOO (INT, INT, DEC(7,2)) FOR GOVERNOR SPECIFIC FOO_7 ...

(I1 I2 INTEGER D DECIMAL E EMPEROR )

SELECT E..FOO(I1, I2, D) ...

GOVERNOR EMPEROR () FOO_7

FOO_3

1 () 1 FOO_1 FOO_6

FOO_2 FOO_4 FOO_5

FOO_4 FOO_5

2 FOO_5 FOO_4 FOO_4 FOO_5

STEP

STEP(SMALLINT) FOR TYPEA RETURNS CHAR(5)STEP(DOUBLE) FOR TYPEA RETURNS INTEGER

(S SMALLINT TA TYPEA )

158 SQL

SELECT 3 + TA..STEP(S) ...

STEP CHAR(5)

v

v

(96)

v DML v v v v SQL

DML

2

3 159

2 (SQL ) SQL 2627

DML REBIND ( API) BIND ( API) REBIND (RESOLVE CONSERVATIVE ) ( RESOLVE ANY )

26. 6.1

27.

160 SQL

SQL 709CREATE FUNCTION (SQL )

expression:

operator

function+ (expression)- constant

column-namehost-variablespecial-register

(1)(scalar-fullselect)

(2)labeled-duration

(3)case-expression

(4)cast-specification

(5)dereference-operation

(6)OLAP-function

(7)method-invocation

(8)subtype-treatment

(9)sequence-reference

operator:(10)

CONCAT/*+-

:

1 168

2 168

3 161

3 174CASE

4 176CAST

5 179

6 181OLAP

7 187

8 188

9 189

10 CONCAT ||

: SALARY :SALARY 'SALARY' MAX(SALARY)

(CONCAT) 2 1

FOR BITDATA 2 (SQLSTATE 42884) 967

1 2

10.

CHAR(A) CHAR(B) 254 VARCHAR(A+B)

CHAR(A) VARCHAR(B) 4000 LONG VARCHAR

CHAR(A) LONG VARCHAR - LONG VARCHAR

162 SQL

10. ()

VARCHAR(A) VARCHAR(B) 4000 LONG VARCHAR

VARCHAR(A) LONG VARCHAR - LONG VARCHAR

LONG VARCHAR LONG VARCHAR - LONG VARCHAR

CLOB(A) CHAR(B) - CLOB(MIN(A+B, 2G))

CLOB(A) VARCHAR(B) - CLOB(MIN(A+B, 2G))

CLOB(A) LONG VARCHAR - CLOB(MIN(A+32K, 2G))

CLOB(A) CLOB(B) - CLOB(MIN(A+B, 2G))

GRAPHIC(A) GRAPHIC(B) 127 VARGRAPHIC(A+B)

GRAPHIC(A) VARGRAPHIC(B) 2000 LONG VARGRAPHIC

GRAPHIC(A) LONG

VARGRAPHIC

- LONG VARGRAPHIC

VARGRAPHIC(A) VARGRAPHIC(B) 2000 LONG VARGRAPHIC

VARGRAPHIC(A) LONG VARGRAPHIC - LONG VARGRAPHIC

LONG VARGRAPHIC LONG

VARGRAPHIC

- LONG VARGRAPHIC

DBCLOB(A) GRAPHIC(B) - DBCLOB(MIN(A+B, 1G))

DBCLOB(A) VARGRAPHIC(B) - DBCLOB(MIN(A+B, 1G))

DBCLOB(A) LONG VARGRAPHIC - DBCLOB(MIN(A+16K, 1G))

DBCLOB(A) DBCLOB(B) - DBCLOB(MIN(A+B, 1G))

BLOB(A) BLOB(B) - BLOB(MIN(A+B, 2G))

LONG LOBCHAR(200) LONG VARCHAR CLOB

3 163

114

1: FIRSTNME Pierre LASTNAME Fermat

FIRSTNME CONCAT ' ' CONCAT LASTNAME

Pierre Fermat

2:

v COLA 'AA' VARCHAR(5) v :host_var 5 'BB '

v COLC 'CC' CHAR(5) v COLD 'DDDDD' CHAR(5)

COLA CONCAT :host_var CONCAT COLC CONCAT COLD

'AABB CC DDDDD'

VARCHAR 17

3: COLA CHAR(10) COLB VARCHAR(5)

COLA CONCAT COLB CONCAT ?

VARCHAR(15) COLA CONCAT COLB 2 CONCAT 1

CONCAT TITLE

164 SQL

TITLE_DESCRIPTION VARCHAR(25) ATTACH

CREATE FUNCTION ATTACH (TITLE, TITLE_DESCRIPTION)RETURNS VARCHAR(50) SOURCE CONCAT (VARCHAR(), VARCHAR())

CREATE FUNCTION CONCAT (TITLE, TITLE_DESCRIPTION)RETURNS VARCHAR(50) SOURCE CONCAT (VARCHAR(), VARCHAR())

DFT_SQLMATHWARN yes

(169SQL / )USER+2

+ () - () A -A

+-* / 2 +(a,b) a+b

SQL (SQLSTATE 22003 22012)

(DFT_SQLMATHWARN yes ) (SQLSTATE01519 01564) SQL

3 165

SQL

v

v WHERE

v

v CASE

v (

check (c1*c2 is not null and c1*c2>5000)

)

2 2 () (big integer) (large integer) () ()

10 10 p 0 10 10 p (big integer) 19 (largeinteger) 11 (small integer) 5

2 10 10 10 10 10

166 SQL

10 31 10 31 31

SQL 10 SQL 10 p s 1 p' s' 2

min(31,max(p-s,p-s) +max(s,s)+1) max(s,s)

(31,p+p) min(31,s+s)

31 31-p+s-s'

: MIN_DEC_DIV_3 10 NO 31-p+s-s' YES MAX(3, 31-p+s-s') 10 3 ( 31 )MIN_DEC_DIV_3

10 10

INCOME EXPENSES

3 167

|||||||

DECIMAL(8,2) REVENUE

CREATE FUNCTION REVENUE (INCOME, EXPENSES)RETURNS DECIMAL(8,2) SOURCE "-" (DECIMAL, DECIMAL)

- ()

CREATE FUNCTION "-" (INCOME, EXPENSES)RETURNS DECIMAL(8,2) SOURCE "-" (DECIMAL, DECIMAL)

1 1 477

/ / 10 /

4

labeled-duration:function(expression)constantcolumn-namehost-variable

YEARYEARSMONTHMONTHSDAYDAYSHOURHOURSMINUTEMINUTESSECONDSECONDSMICROSECONDMICROSECONDS

(labeled-duration) () 7 YEARS MONTHS DAYS HOURS

168 SQL

MINUTES SECONDS MICROSECONDS 1 28

DECIMAL(15,0) 1 DATETIME TIMESTAMP HIREDATE + 2 MONTHS + 14 DAYS HIREDATE + (2 MONTHS+ 14 DAYS) 2 MONTHS 14 DAYS

DECIMAL(8,0) yyyymmdd. (yyyy mm dd ) 29 HIREDATE -BRTHDATE

DECIMAL(6,0) hhmmss. (hh mm ss ) 29

DECIMAL(20,6) yyyymmddhhmmss.zzzzzz (yyyy mmdd hhmm ss zzzzzz )

SQL / / / /

v YEARSMONTHSDAYS

v HOURSMINUTESSECONDS

28. YEARMONTHDAYHOURMINUTES