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标题:
Mysql、高斯(Gauss)数据库获取表布局
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作者:
守听
时间:
2024-7-22 04:51
标题:
Mysql、高斯(Gauss)数据库获取表布局
Mysql、高斯(Gauss)数据库获取表布局
MySQL:
获取表布局及(column_comment)注释
SELECT *
FROM information_schema.columns
WHERE table_schema = 'your_schema'
AND table_name = 'your_table';
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高斯(Gauss):
获取表布局
SELECT *
FROM information_schema.columns
WHERE table_schema = 'your_schema'
AND table_name = 'your_table';
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获取字段注释
select
a.attname as column_name,
a.attnotnull,
d.description as column_comment
from pg_description d
join pg_attribute a on
d.objoid = a.attrelid
and d.objsubid = a.attnum
join pg_class c on
a.attrelid = c.oid
where
c.relname = 'your_table'
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结合一下:
-- aa.column_name 字段名-- t1.column_comment 注释-- aa.column_default 默认值-- aa.is_nullable 是否为空-- aa.data_type 数据类型-- aa.character_maximum_length 字符串类型大小 -- aa.numeric_precision, 数字类型大小-- aa.datetime_precision 时间类型大小SELECT aa.column_name,t1.column_comment,aa.column_default,aa.is_nullable,aa.data_type,aa.character_maximum_length, aa.numeric_precision, aa.datetime_precisionFROM INFORMATION_SCHEMA.COLUMNS as aaleft join ( select
a.attname as column_name,
a.attnotnull,
d.description as column_comment
from pg_description d
join pg_attribute a on
d.objoid = a.attrelid
and d.objsubid = a.attnum
join pg_class c on
a.attrelid = c.oid
where
c.relname = 'your_table'
)t1 on t1.column_name = aa.column_nameWHERE TABLE_NAME = 'your_table'
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拓展:
将得到得数据复制到Excel中,举行处理,即可得到想要的表布局数据
其中必要的处理:
C:=IF(B1:B40="NO","否","")
F:=IF(D1:D40="character varying","varying",IF(D1:D40="timestamp without time zone","timestamp",IF(D1:D40="numeric","numeric","")))
G:=F1:F40&"("&E1:E40&")"
不足:部分大小数值需要手写,也可以在sql中处理
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