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Add hints to cases where indexes fail because of values that are too long.

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This commit is contained in:
Bruce Momjian
2005-08-10 21:36:46 +00:00
parent 8bbf227ad7
commit 237be3cc29
4 changed files with 16 additions and 8 deletions
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5
src/backend/access/hash/hashinsert.c
View File

@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/hash/hashinsert.c,v 1.36 2005/03/21 01:23:57 tgl Exp $ * $PostgreSQL: pgsql/src/backend/access/hash/hashinsert.c,v 1.37 2005/08/10 21:36:45 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -88,7 +88,8 @@ _hash_doinsert(Relation rel, HashItem hitem)
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds hash maximum %lu", errmsg("index row size %lu exceeds hash maximum %lu",
(unsigned long) itemsz, (unsigned long) itemsz,
(unsigned long) HashMaxItemSize((Page) metap)))); (unsigned long) HashMaxItemSize((Page) metap)),
errhint("Values larger than a buffer page cannot be indexed.")));
/* /*
* Compute the target bucket number, and convert to block number. * Compute the target bucket number, and convert to block number.

7
src/backend/access/nbtree/nbtinsert.c
View File

@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.121 2005/06/06 20:22:57 tgl Exp $ * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.122 2005/08/10 21:36:45 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -392,7 +392,10 @@ _bt_insertonpg(Relation rel,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds btree maximum, %lu", errmsg("index row size %lu exceeds btree maximum, %lu",
(unsigned long) itemsz, (unsigned long) itemsz,
(unsigned long) BTMaxItemSize(page)))); (unsigned long) BTMaxItemSize(page)),
errhint("Values larger than 1/3 of a buffer page cannot be indexed\n"
"Consider a separate column containing an MD5 hash of the value\n"
"or use full text indexing.")));
/* /*
* Determine exactly where new item will go. * Determine exactly where new item will go.

7
src/backend/access/nbtree/nbtsort.c
View File

@ -56,7 +56,7 @@
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.91 2005/06/06 20:22:57 tgl Exp $ * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.92 2005/08/10 21:36:45 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -498,7 +498,10 @@ _bt_buildadd(BTWriteState *wstate, BTPageState *state, BTItem bti)
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds btree maximum, %lu", errmsg("index row size %lu exceeds btree maximum, %lu",
(unsigned long) btisz, (unsigned long) btisz,
(unsigned long) BTMaxItemSize(npage)))); (unsigned long) BTMaxItemSize(npage)),
errhint("Values larger than 1/3 of a buffer page cannot be indexed\n"
"Consider a separate column containing an MD5 hash of the value\n"
"or use full text indexing.")));
if (pgspc < btisz || pgspc < state->btps_full) if (pgspc < btisz || pgspc < state->btps_full)
{ {

5
src/backend/access/rtree/rtree.c
View File

@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/rtree/rtree.c,v 1.90 2005/06/06 17:01:22 tgl Exp $ * $PostgreSQL: pgsql/src/backend/access/rtree/rtree.c,v 1.91 2005/08/10 21:36:46 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -733,7 +733,8 @@ rtpicksplit(Relation r,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds rtree maximum, %lu", errmsg("index row size %lu exceeds rtree maximum, %lu",
(unsigned long) newitemsz, (unsigned long) newitemsz,
(unsigned long) RTPageAvailSpace))); (unsigned long) RTPageAvailSpace),
errhint("Values larger than a buffer page cannot be indexed.")));
maxoff = PageGetMaxOffsetNumber(page); maxoff = PageGetMaxOffsetNumber(page);
newitemoff = OffsetNumberNext(maxoff); /* phony index for new newitemoff = OffsetNumberNext(maxoff); /* phony index for new