I would like to clarify my understanding in regards to lifespan of indexes.

1. Once the index is created, the sequence of the items is stored in the
database, so the following example would be possible.
a) Create an index with an overloaded NOCASE collation function on a column.
b) Sort the column with NOCASE, without loading the overloaded NOCASE
collation extension.
c) The sorting is expected to follow the sequence created initially by the
overloaded collation function and not the standard function.

2. I am a bit unclear what happens to an already created index once i
INSERT, UPDATE, DELETE a row in an indexed column.
3. When is a REINDEX required (except when collation function changes) ?

Best Regards,
ioannis
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