The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/14/btree-implementation.html Description:
"64.4.3. Deduplication" says: "numeric cannot use deduplication. Numeric display scale must be preserved among equal datums." However I don't understand this. An equal datum is an equal datum regardless of display scale, isn't it? Even in the special case of a NUMERIC column with no precision or scale (8.1.2), for example if a table has an index on a NUMERIC column, and some rows have the value 8 in that column, and some have the value 8.0 (I think these are different values/datums in this special case), I would not expect all those index entries to be deduplicated into a single list, but I would expect them to be deduplicated into two lists (one for the value 8, and one for the value 8.0). Then again I am not familiar with the actual implementation.
