分享一段用于导出数据库中表和字段定义至Excel文档的python代码，此处是针对MySQL的，其他数据库同理，只要少量的改动。

效果

代码

import pandas as pd

import sqlalchemy as sqla

username='root'

password='1234'

server='localhost:3306'

database='world'

charset='utf8'

engine = sqla.create_engine('mysql+pymysql://{}:{}@{}/{}?charset={}'.format(username,password,server,database,charset))

#从系统表查询定义

tables=pd.read_sql('''

select TABLE_SCHEMA,TABLE_NAME,CREATE_TIME,TABLE_COMMENT

from information_schema.TABLES

where TABLE_SCHEMA='%s'

order by TABLE_NAME;

'''%database,engine)

columns=pd.read_sql('''

select TABLE_NAME,COLUMN_NAME,COLUMN_TYPE,COLUMN_KEY,COLUMN_DEFAULT, COLUMN_COMMENT

from information_schema.COLUMNS

where TABLE_SCHEMA='%s'

order by TABLE_NAME,ORDINAL_POSITION;

'''%database,engine)

#导出数据至Excel

file_path='C:\\Users\\hp\\Desktop\\%s.xlsx'%database

writer=pd.ExcelWriter(file_path)

tables.to_excel(writer,'Index',index=False)

for i in range(len(tables)):

table_name=tables["TABLE_NAME"].iloc[i]

columns_=columns[columns["TABLE_NAME"]==table_name].iloc[:,1:]

columns_.to_excel(writer,table_name,index=False)

writer.save()

#调整格式

from openpyxl import load_workbook

from openpyxl.styles import Font,colors,Border,Side

border = Border(left=Side(style='medium',color='FF000000'),

right=Side(style='medium',color='FF000000'),

top=Side(style='medium',color='FF000000'),

bottom=Side(style='medium',color='FF000000'),

diagonal=Side(style='medium',color='FF000000'),

diagonal_direction=0,outline=Side(style='medium',color='FF000000'),

vertical=Side(style='medium',color='FF000000'),

horizontal=Side(style='medium',color='FF000000'))

font=Font(underline='single', color=colors.BLUE)

wb = load_workbook(file_path)

ws = wb.get_sheet_by_name("Index")

#索引页调整列宽

ws.column_dimensions["A"].width =30.0

ws.column_dimensions["B"].width =30.0

ws.column_dimensions["C"].width =30.0

ws.column_dimensions["D"].width =40.0

#增加边框线

for n in range(2,len(tables)+2):

for m in ['A','B','C','D']:

ws[m+str(n)].border=border

#处理各表的页

for i in range(len(tables)):

#索引页增加调转指定表页的链接

table_name=tables["TABLE_NAME"].iloc[i]

ws["B"+str(i+2)].hyperlink = "#"+table_name+"!F1"

ws["B"+str(i+2)].font = font

ws2=wb.get_sheet_by_name(table_name)

#指定表页增加返回索引页的链接

ws2["F1"]="back"

ws2["F1"].hyperlink = "#Index!B"+str(i+2)

ws2["F1"].font=font

#指定表页调整列宽

ws2.column_dimensions["A"].width =30.0

ws2.column_dimensions["B"].width =30.0

ws2.column_dimensions["C"].width =20.0

ws2.column_dimensions["D"].width =20.0

ws2.column_dimensions["E"].width =40.0

#增加边框线

columns_=columns[columns["TABLE_NAME"]==tables["TABLE_NAME"].iloc[i]].iloc[:,1:]

for n in range(2,len(columns_)+2):

for m in ['A','B','C','D','E']:

ws2[m+str(n)].border=border

wb.save(file_path)