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Added more explanation about GIN index.

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Adam Saleh 2021-02-17 16:24:27 +01:00
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docs/datanommer_datagrepper/pg_array_column_postgrest.rst
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@ -7,6 +7,9 @@ in the standard RDBS fashion.
We came to some problems when trying to enforce foreign key constrains while using the timescaledb
extension. We decided to try, if just using a column with array type with proper indes would have simmilar performace.
Array columns support indexing with Generalized Inverted Index, GIN,
that allows for fast searches on membership and intersection. Because we mostly search for memebership,
array column could be performant enough for our purposes.
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