postgresql - 100 columns vs Array of length 100 -

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i have table 100+ values corresponding each row, i'm exploring different ways store them.

without indexes, lose if store these 100 values in integer[] column in postgresql? compared storing them in separate columns.

plus, since can add indexes array elemnets,

create index test_index on test ((foo[1]));

would there performance difference queries using such index compared regular index on column?

as far i've read, performance difference come picture in arrays variable length elements; i'm not sure fixed length ones.

don't go lazy way. if need store 100 , more values array, ok, if has sense has array application, data.

if need query specific element of array, design not good, regardless of performances, , must use columns. in moment must delete "column" in middle or redesign it.

anyway, wrote frank in comments, if values same type, consider model them table (if meaning same).


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