Doc: indexUnchanged is strictly a hint.
Clearly spell out the limitations of aminsert()'s indexUnchanged hinting
mechanism in the index AM documentation.
Oversight in commit 9dc718bd, which added the "logically unchanged
index" hint (which is used to trigger bottom-up index deletion).
Author: Peter Geoghegan <pg@bowt.ie>
Reported-By: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-By: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CAH2-WzmU_BQ=-H9L+bxTSMQBqHMjp1DSwGypvL0gKs+dTOfkKg@mail.gmail.com
Backpatch: 14-, where indexUnchanged hinting was introduced.
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/74e5ea1e002f861d499ded6562cab9e769f44781
Modified Files
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doc/src/sgml/indexam.sgml | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)