【oushuDB】获取表字段信息

基本信息

系统 : CentOS Linux release 7.4.1708 (Core)
产品 : OushuDB
模块 : DB
子模块 : -

描述详述

获取 表/字段/字段长度/类型/注释

原因

解决方案

SELECT n.nspname,c.relname,a.attname,length(a.attname),
  pg_catalog.format_type(a.atttypid, a.atttypmod),
  pg_catalog.col_description(a.attrelid, a.attnum)
FROM pg_catalog.pg_attribute a
join pg_class c      on a.attrelid=c.oid
join pg_namespace n  on c.relnamespace=n.oid
WHERE  n.nspname||'.'||c.relname='SCHEMA.TABLE'
AND a.attnum > 0 AND NOT a.attisdropped
ORDER BY a.attnum;