1. 场景描述

项目开发中，需要介绍数据表字段描述，使用excel表来展示。
这时，可以使用navicat来生成数据字典

postgresql_3">2. postgresql生成数据字典

1. 生成数据字典的sql语句

SELECT 
	A.attnum AS "序号",
--	C.relname AS "表名",
--  CAST ( obj_description ( relfilenode, 'pg_class' ) AS VARCHAR ) AS "表名描述",
 	A.attname AS "字段名",
  CASE
	  	A.attnotnull 
		  WHEN 't' THEN '是' 
		  WHEN 'f' THEN '否'
	    END AS 是否必填,
	concat_ws ( '', T.typname, SUBSTRING ( format_type ( A.atttypid, A.atttypmod ) FROM '\(.*\)' ) ) AS "数据类型",
	d.description AS "注释" 
FROM
	pg_class C,
	pg_attribute A,
	pg_type T,
	pg_description d 
WHERE
	C.relname = '需要生成数据字典的表名' 
	AND A.attnum > 0 
	AND A.attrelid = C.oid 
	AND A.atttypid = T.oid 
	AND d.objoid = A.attrelid 
	AND d.objsubid = A.attnum

提示：可以将其中的 C.relname = ‘需要生成数据字典的表名’ 使用in关键字，直接导出多个表

2. 然后从navicat中将结果导出即可