hive如何生成数据字典

执行下面sql即可

-- 查看hive里表和字段字典信息
-- 如果是用create table 的方式建的表，这里是查不到的。
-- 建的表必须要有表注释，否则查不出来。
select 
	 d.name as db_name               -- 数据库名
	,c.tbl_name                     -- 表名
	,e.param_value as tbl_name_desc -- 表中文注释
	,a.integer_idx as column_seq    -- 表列序列
	,a.column_name                  -- 列名
	,a.type_name as column_type     -- 列数据类型
	,a.COMMENT as column_desc       -- 列中文注释
from columns_v2 a
inner join sds  b on a.cd_id=b.cd_id
inner join tbls c on b.sd_id=c.sd_id
inner join dbs  d on c.db_id=d.db_id
inner join table_params e on c.tbl_id=e.tbl_id
where e.param_key='comment'
and d.name in ( 'dm_estate_hr'
                ,'dm_estate_mk'
                ,'dm_estate_ce'
                ,'dm_estate_ct'
                ,'dm_estate_de'
                ,'dm_estate_co'
                ,'dm_estate_fi'
                ,'dm_pub'
                ,'dm_estate')  -- 库名列表
    and   a.COMMENT like '%目的%'
order by d.name,c.tbl_name,a.integer_idx; 

pd的版本是16.7

一、从hive导出建表脚本(hive 脚本！！)
1.从平台导出建表语句
(1)show create db.table_name 一定要带上数据库名！！！
(2)可以把多个表的建表语句放在一个文档里，用分号隔开
二、格式化建表语句：将符号 ` 去掉
三、文件类型保存为.sql
四、导入到PD模型
1.反向工程导入


2.将字段的comment复制到name列

comment2name.vbs 代码如何下 Option Explicit ValidationMode = True
InteractiveMode = im_Batch Dim mdl ’ the current model
’ get the current active model Set mdl = ActiveModel
If (mdl Is Nothing) Then MsgBox “There is no
current Model " ElseIf Not mdl.IsKindOf(PdPDM.cls_Model) Then
MsgBox “The current model is not an Physical Data
model. " Else ProcessFolder mdl End If Private sub
ProcessFolder(folder) On Error Resume Next Dim Tab 'running
table for each Tab in folder.tables if not
tab.isShortcut then tab.name = tab.comment Dim col ’
running column for each col in tab.columns if
col.comment=”” then else col.name= col.comment end if next
end if next
Dim view 'running view for each view in folder.Views if not view.isShortcut then view.name =
view.comment end if next
’ go into the sub-packages Dim f ’ running folder For Each f In folder.Packages if not
f.IsShortcut then ProcessFolder f end if Next end sub

3.将表的name调回code

五.排版分层，建依赖
1.全选需要调整颜色的数仓层

六、生成pdm文件，然后导入到PDMReader中即可