Gurjeet Singh <singh.gurj...@gmail.com> wrote: > On occasions I have wanted psql to emit the full 'True'/'False' > words instead of cryptic one-letter t/f, which can get lost on > long rows that get wrapped around on screen. Writing long-winded > CASE expressions to get the effect is too much for small ad-hoc > queries. > > I thought of inventing a data type whose out-function would emit > these strings, and tack a ::mybool to the expression I want > modified. But that would break the applications if somebody pasted > the same query in an application (JDBC or some such that > understands boolean) and expected a boolean data type instead of a > text output of an expression. The type itself does output true/false; it's just psql that uses t/f. test=# select 'true'::boolean::text; text ------ true (1 row) test=# select 'false'::boolean::text; text ------- false (1 row) That has always seemed quite odd (and occasionally inconvenient) to me. -Kevin
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