Thread: pgsql: Doc: indexUnchanged is strictly a hint.

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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REL_16_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/cf89d3052d62a5dd82805d157b64cdf493e5e851

Modified Files
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doc/src/sgml/indexam.sgml | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)