Python使用cx_Oracle模块将oracle中数据导出到csv文件

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# Export Oracle database tables to CSV files

# FB36 - 201007117

import sys

import csv

import cx_Oracle

connection = raw_input("Enter Oracle DB connection (uid/pwd@database) : ")

orcl = cx_Oracle.connect(connection)

curs = orcl.cursor()

printHeader = True # include column headers in each table output

sql = "select * from tab" # get a list of all tables

curs.execute(sql)

for row_data in curs:

if not row_data[0].startswith('BIN$'): # skip recycle bin tables

tableName = row_data[0]

# output each table content to a separate CSV file

csv_file_dest = tableName + ".csv"

outputFile = open(csv_file_dest,'w') # 'wb'

output = csv.writer(outputFile, dialect='excel')

sql = "select * from " + tableName

curs2 = orcl.cursor()

curs2.execute(sql)

if printHeader: # add column headers if requested

cols = []

for col in curs2.description:

cols.append(col[0])

output.writerow(cols)

for row_data in curs2: # add table rows

output.writerow(row_data)

outputFile.close()