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Support INCLUDE'd columns in SP-GiST.

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Not much to say here: does what it says on the tin.
We steal a previously-always-zero bit from the nextOffset
field of leaf index tuples in order to track whether there
is a nulls bitmap.  Otherwise it works about like included
columns in other index types.

Pavel Borisov, reviewed by Andrey Borodin and Anastasia Lubennikova,
and rather heavily editorialized on by me

Discussion: https://postgr.es/m/CALT9ZEFi-vMp4faht9f9Junb1nO3NOSjhpxTmbm1UGLMsLqiEQ@mail.gmail.com
This commit is contained in:
Tom Lane
2021-04-05 18:41:09 -04:00
parent 49f49defe7
commit 09c1c6ab4b
21 changed files with 630 additions and 232 deletions
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6
src/backend/access/spgist/spgxlog.c
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@@ -122,8 +122,8 @@ spgRedoAddLeaf(XLogReaderState *record)
head = (SpGistLeafTuple) PageGetItem(page,
PageGetItemId(page, xldata->offnumHeadLeaf));
Assert(head->nextOffset == leafTupleHdr.nextOffset);
head->nextOffset = xldata->offnumLeaf;
Assert(SGLT_GET_NEXTOFFSET(head) == SGLT_GET_NEXTOFFSET(&leafTupleHdr));
SGLT_SET_NEXTOFFSET(head, xldata->offnumLeaf);
}
}
else
@@ -822,7 +822,7 @@ spgRedoVacuumLeaf(XLogReaderState *record)
lt = (SpGistLeafTuple) PageGetItem(page,
PageGetItemId(page, chainSrc[i]));
Assert(lt->tupstate == SPGIST_LIVE);
lt->nextOffset = chainDest[i];
SGLT_SET_NEXTOFFSET(lt, chainDest[i]);
}
PageSetLSN(page, lsn);