SELECT
attname,typname,adsrc
FROM
pg_attribute
INNER JOIN pg_class ON
pg_attribute.attrelid = pg_class.oid
INNER JOIN pg_type ON
pg_attribute.atttypid = pg_type.oid
LEFT OUTER JOIN pg_attrdef ON
pg_attrdef.adrelid = pg_class.oid AND pg_attrdef.adnum =
pg_attribute.attnum
LEFT OUTER JOIN pg_description ON
pg_description.objoid = pg_class.oid AND pg_description.objsubid =
pg_attribute.attnum
WHERE
pg_attribute.attnum > 0
AND attisdropped <> 't'
AND pg_class.relname=
'testexecute' --testexecute为表名
ORDER BY pg_attribute.attnum ;
第二种SQL
SELECT
a.attnum,
a.attname AS field,
t.typname AS type,
a.attlen AS length,
a.atttypmod AS lengthvar,
a.attnotnull AS notnull
FROM
pg_class c,
pg_attribute a,
pg_type t
WHERE
c.relname = 't_user'
and a.attnum > 0
and a.attrelid = c.oid
and a.atttypid = t.oid
and a.attname = 'passport'
ORDER BY a.attnum
a.attnum,
a.attname AS field,
t.typname AS type,
a.attlen AS length,
a.atttypmod AS lengthvar,
a.attnotnull AS notnull
FROM
pg_class c,
pg_attribute a,
pg_type t
WHERE
c.relname = 't_user'
and a.attnum > 0
and a.attrelid = c.oid
and a.atttypid = t.oid
and a.attname = 'passport'
ORDER BY a.attnum