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Optimizer fix for samekeys.

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This commit is contained in:
Bruce Momjian 1999-02-09 06:30:45 +00:00
parent fe35ffe7e0
commit 78511d8fe9
3 changed files with 5732 additions and 5520 deletions
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22
src/backend/optimizer/util/keys.c
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@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/Attic/keys.c,v 1.11 1999/02/09 03:51:26 momjian Exp $ * $Header: /cvsroot/pgsql/src/backend/optimizer/util/Attic/keys.c,v 1.12 1999/02/09 06:30:39 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -108,25 +108,35 @@ extract_subkey(JoinKey *jk, int which_subkey)
/* /*
* samekeys-- * samekeys--
* Returns t iff two sets of path keys are equivalent. They are * Returns t iff two sets of path keys are equivalent. They are
* equivalent if the first subkey (var node) within each sublist of * equivalent if the first Var nodes match the second Var nodes.
* list 'keys1' is contained within the corresponding sublist of 'keys2'.
* *
* XXX It isn't necessary to check that each sublist exactly contain * XXX It isn't necessary to check that each sublist exactly contain
* the same elements because if the routine that built these * the same elements because if the routine that built these
* sublists together is correct, having one element in common * sublists together is correct, having one element in common
* implies having all elements in common. * implies having all elements in common.
* Huh? bjm
* *
*/ */
bool bool
samekeys(List *keys1, List *keys2) samekeys(List *keys1, List *keys2)
{ {
List *key1, List *key1,
*key2; *key2,
*key1a,
*key2a;
for (key1 = keys1, key2 = keys2; key1 != NIL && key2 != NIL; for (key1 = keys1, key2 = keys2;
key1 != NIL && key2 != NIL;
key1 = lnext(key1), key2 = lnext(key2)) key1 = lnext(key1), key2 = lnext(key2))
if (!member(lfirst((List *)lfirst(key1)), lfirst(key2))) {
for (key1a = lfirst(key1), key2a = lfirst(key2);
key1a != NIL && key2a != NIL;
key1a = lnext(key1a), key2a = lnext(key2a))
if (!equal(lfirst(key1a), lfirst(key2a)))
return false; return false;
if (key1a != NIL)
return false;
}
/* Now the result should be true if list keys2 has at least as many /* Now the result should be true if list keys2 has at least as many
* entries as keys1, ie, we did not fall off the end of keys2 first. * entries as keys1, ie, we did not fall off the end of keys2 first.

11132
src/backend/parser/gram.c
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File diff suppressed because it is too large Load Diff

98
src/backend/parser/parse.h
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@ -202,54 +202,56 @@ typedef union
#define INSTEAD 428 #define INSTEAD 428
#define ISNULL 429 #define ISNULL 429
#define LANCOMPILER 430 #define LANCOMPILER 430
#define LISTEN 431 #define LIMIT 431
#define LOAD 432 #define LISTEN 432
#define LOCATION 433 #define LOAD 433
#define LOCK_P 434 #define LOCATION 434
#define MAXVALUE 435 #define LOCK_P 435
#define MINVALUE 436 #define MAXVALUE 436
#define MOVE 437 #define MINVALUE 437
#define NEW 438 #define MOVE 438
#define NOCREATEDB 439 #define NEW 439
#define NOCREATEUSER 440 #define NOCREATEDB 440
#define NONE 441 #define NOCREATEUSER 441
#define NOTHING 442 #define NONE 442
#define NOTIFY 443 #define NOTHING 443
#define NOTNULL 444 #define NOTIFY 444
#define OIDS 445 #define NOTNULL 445
#define OPERATOR 446 #define OFFSET 446
#define PASSWORD 447 #define OIDS 447
#define PROCEDURAL 448 #define OPERATOR 448
#define RECIPE 449 #define PASSWORD 449
#define RENAME 450 #define PROCEDURAL 450
#define RESET 451 #define RECIPE 451
#define RETURNS 452 #define RENAME 452
#define ROW 453 #define RESET 453
#define RULE 454 #define RETURNS 454
#define SEQUENCE 455 #define ROW 455
#define SERIAL 456 #define RULE 456
#define SETOF 457 #define SEQUENCE 457
#define SHOW 458 #define SERIAL 458
#define START 459 #define SETOF 459
#define STATEMENT 460 #define SHOW 460
#define STDIN 461 #define START 461
#define STDOUT 462 #define STATEMENT 462
#define TRUSTED 463 #define STDIN 463
#define UNLISTEN 464 #define STDOUT 464
#define UNTIL 465 #define TRUSTED 465
#define VACUUM 466 #define UNLISTEN 466
#define VALID 467 #define UNTIL 467
#define VERBOSE 468 #define VACUUM 468
#define VERSION 469 #define VALID 469
#define IDENT 470 #define VERBOSE 470
#define SCONST 471 #define VERSION 471
#define Op 472 #define IDENT 472
#define ICONST 473 #define SCONST 473
#define PARAM 474 #define Op 474
#define FCONST 475 #define ICONST 475
#define OP 476 #define PARAM 476
#define UMINUS 477 #define FCONST 477
#define TYPECAST 478 #define OP 478
#define UMINUS 479
#define TYPECAST 480
extern YYSTYPE yylval; extern YYSTYPE yylval;