Python使用cx_Oracle模块将oracle中数据导出到csv文件的方法

# 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()