Postgres 15

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create table test (verysmallinteger char(1)) ;

CREATE TABLE

-- storing integers from 1 to 32 into column verysmallinteger
insert into test 
select chr(i+32)
from generate_series(1,32) AS i

INSERT 0 32

-- querying values stored in column verysmallinteger
select ascii(verysmallinteger)-32 from test order by 1

?column?

1

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SELECT 32