postgres获取元数据@2022-08-30

SELECT
a.attnum,
c.relname,
a.attname AS field,
t.typname AS type,
a.attlen AS length,
a.atttypmod AS lengthvar,
a.attnotnull AS notnull,
b.description AS comment
FROM pg_class c,
pg_attribute a
LEFT OUTER JOIN pg_description b ON a.attrelid=b.objoid AND a.attnum = b.objsubid,
pg_type t
WHERE (c.relname like 'dw%' or c.relname like 'ods%')
and a.attnum > 0
and a.attrelid = c.oid
and a.atttypid = t.oid
ORDER BY
c.relname,
a.attnum;