Hier ist eine etwas verbesserte Version von shekwi 's Abfrage .
Es erzeugt die Primärschlüssel-Beschränkung und kann mit temporären Tabellen umgehen:
with pkey as
(
select cc.conrelid, format(E',
constraint %I primary key(%s)', cc.conname,
string_agg(a.attname, ', '
order by array_position(cc.conkey, a.attnum))) pkey
from pg_catalog.pg_constraint cc
join pg_catalog.pg_class c on c.oid = cc.conrelid
join pg_catalog.pg_attribute a on a.attrelid = cc.conrelid
and a.attnum = any(cc.conkey)
where cc.contype = 'p'
group by cc.conrelid, cc.conname
)
select format(E'create %stable %s%I\n(\n%s%s\n);\n',
case c.relpersistence when 't' then 'temporary ' else '' end,
case c.relpersistence when 't' then '' else n.nspname || '.' end,
c.relname,
string_agg(
format(E'\t%I %s%s',
a.attname,
pg_catalog.format_type(a.atttypid, a.atttypmod),
case when a.attnotnull then ' not null' else '' end
), E',\n'
order by a.attnum
),
(select pkey from pkey where pkey.conrelid = c.oid)) as sql
from pg_catalog.pg_class c
join pg_catalog.pg_namespace n on n.oid = c.relnamespace
join pg_catalog.pg_attribute a on a.attrelid = c.oid and a.attnum > 0
join pg_catalog.pg_type t on a.atttypid = t.oid
where c.relname = :table_name
group by c.oid, c.relname, c.relpersistence, n.nspname;
Verwenden Sie table_name
um den Namen der Tabelle anzugeben.