Hi all,

in a large table (millions of rows) I am using 
a variable-length user
defined type 
to store relatively short field entries, i.e. the 
length of certain
fields could be restricted to 2^16 or even 
2^8 characters.

Now I wonder whether it would be possible 
to save storage place, by
using a smaller length field, i.e. 2 Byte or 
even better 1 Byte per entry instead of 4 

Is there a possibility to customize the size of 
the length field or does
Postgresql already internally optimize this?

Thanks in advance,

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