Python (pandas) Query Data Frame from SQL Server 数据库错误

如何解决Python (pandas) Query Data Frame from SQL Server 数据库错误

我正在尝试从 sql Server 数据库查询 python 数据框，但出现错误。我认为错误是 sql 语法太长？

但我不知道哪里错了。

功能

import dash 
import dash_bootstrap_components as dbc 
import dash_core_components as dcc 
import dash_html_components as html 
from dash.dependencies import Input,Output 
import dash_table as dt 
import pandas as pd 
from django_plotly_dash import DjangoDash 
import pyodbc 
import dash_core_components as dcc

server = '' database = '' username = '' password = '' cnxn = pyodbc.connect('DRIVER={sql Server};SERVER='+server +
                      ';DATABASE='+database+';UID='+username+';PWD=' + password) cursor = cnxn.cursor()


#sql Syntax
query = """SELECT  inf_billnom.year,inf_billnom.week,inf_billnom.month,Case inf_billnom.compno when '1' then '東方' when  '2' then '中遠' else  '物流' end,Max(   inf_billnom.vslcode ) vslcode,Max(   inf_billnom.vslnm ) vslnm,Max(   inf_billnom.voyno ) voyno,Max(   inf_billnom.vslno ) vslno,Max(   inf_billnom.blno ) blno,Case inf_billnom.ix_cd when 'I' then '進口' when  'E' then '出口' else  '未區分' end,inf_billnom.tax_regno,Max(   inf_billnom.Trade ) Trade,Max(   inf_billnom.Tradelane ) Tradelane,Max(   Tradelane.service ) service,Max(   inf_billnom.bound ) bound,Max(  inf_billnom.is_blready ) is_blready,Max(   inf_billnom.cargo_nature ) cargo_nature,Max(  inf_billnom.commodity + ( case when inf_billnom.commodity1 is null then ' ' else ' '  + inf_billnom.commodity1 end )  ) commodity,Max(   inf_billnom.traffic_mode ) traffic_mode,Max(   inf_billnom.ob_departure_date ) ob_departure_date,Max(   inf_billnom.ib_arrival_date ) ib_arrival_date,Max(   inf_billnom.sail_date ) sail_date,Max(   inf_billnom.segment ) segment,case inf_billnom.ix_cd when 'I' then inf_billnom.consignee else inf_billnom.shipper end,Max(   inf_billnom.ccp ) ccp,Max(   inf_billnom.shipper_id ) shipper_id,Max(   inf_billnom.shipper ) shipper,Max(   inf_billnom.consignee_id ) consignee_id,Max(   inf_billnom.consignee ) consignee,Max(   inf_billnom.notify_id ) notify_id,Max(   inf_billnom.notify ) notify,Max(   inf_billnom.also_notify_id ) also_notify_id,Max(   inf_billnom.also_notify ) also_notify,Max(   inf_billnom.agree_num ) agree_num,Max(   inf_billnom.agree_type ) agree_type,Max(   inf_billnom.ctrl_reg ) ctrl_reg,Max(   inf_billnom.frm_city ) frm_city,Max(   inf_billnom.frm_country ) frm_country,Max(   inf_billnom.to_city ) to_city,Max(   inf_billnom.to_country ) to_country,Max(   inf_billnom.svccode_1st ) svccode_1st,Max(   inf_billnom.svccode_mother ) svccode_mother,Max(   inf_billnom.pol_mother ) pol_mother,Max(   inf_billnom.pod_mother ) pod_mother,Max(   inf_billnom.dir ) dir,Max(   inf_billnom.loadsvvd_1st ) loadsvvd_1st,Max(   inf_billnom.discsvvd_last ) discsvvd_last,Max(   inf_billnom.por ) por,Max(   inf_billnom.fnd ) fnd,Max(   inf_billnom.pol ) pol,Max(   inf_billnom.pod ) pod,Max(   inf_billnom.tport ) tport,Max( inf_billnom.frm_location ) frm_location,Max(   inf_billnom.to_location ) to_location,Max(   inf_billnom.por_region ) por_region,Max(   inf_billnom.fnd_region ) fnd_region,Max(   inf_billnom.terminal_1st ) terminal_1st,Max(   inf_billnom.termina_last ) termina_last,Max(   case when inf_billnom.nomcargos = 'Y' then '自攬貨' when inf_billnom.nomcargos = 'N' then '指定貨' else '' end  ) nomcargos,Max(   inf_billnom.department ) department,Max(  case when employee.cname is null then inf_billnom.sales else employee.cname end  ) sales,Max( inf_billnom.inside ) inside,sum(  1  ) blcnt,sum(  case when 0= 0 then inf_billnom.size_20 else 0 end  ) size_20,sum(  case when 0= 0 then inf_billnom.size_40 else 0 end  ) size_40,sum(  case when 0= 0 then inf_billnom.size_45 else 0 end  ) size_45,sum(   case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 else 0 end +  case when 0= 0 then inf_billnom.size_45 else 0 end  ) cntrcnt,round (sum(  case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end  ),3)  teu,Max(   inf_billnom.pay_method ) pay_method,Max(   inf_billnom.shipperkind ) shipperkind,Max(   inf_billnom.isdg ) isdg,Max(  ' ' ) emptykey,Max(  ' ' ) emptykey1,Max(  ' ' ) emptykey2,Max(   inf_billnom.liner ) liner,inf_billnom.quarter,round (sum( case when inf_billnom.month = '01' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month01,round (sum( case when inf_billnom.month = '02' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month02,round (sum( case when inf_billnom.month = '03' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month03,round (sum( case when inf_billnom.month = '04' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month04,round (sum( case when inf_billnom.month = '05' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month05,round (sum( case when inf_billnom.month = '06' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month06,round (sum( case when inf_billnom.month = '07' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month07,round (sum( case when inf_billnom.month = '08' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month08,round (sum( case when inf_billnom.month = '09' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month09,round (sum( case when inf_billnom.month = '10' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month10,round (sum( case when inf_billnom.month = '11' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month11,round (sum( case when inf_billnom.month = '12' then ( case when 0= 0 then inf_billnom.size_20 else 0 end +  case when 0= 0 then inf_billnom.size_40 * 2 else 0 end + case when 0= 0 then inf_billnom.size_45 * 2 else 0 end) else 0 end  ),3)  month12,Max(  view_fnd.value_new ) region FROM {​oj inf_billnom LEFT OUTER JOIN employee ON inf_billnom.compno = employee.compno AND inf_billnom.sales
= employee.emp_id                                         LEFT OUTER JOIN Tradelane ON inf_billnom.Trade = Tradelane.Trade AND inf_billnom.Tradelane = Tradelane.Tradelane AND inf_billnom.compno = Tradelane.compno                                         LEFT OUTER JOIN view_fnd ON inf_billnom.compno = view_fnd.compno and ( case inf_billnom.ix_cd when 'I' then inf_billnom.fnd else inf_billnom.por end )  = view_fnd.value_old }​     wHERE 'TRUE' = 'TRUE'   AND  ( inf_billnom.compno ='1' or inf_billnom.compno = '2' or inf_billnom.compno = 'N' )  AND ( ( inf_billnom.ix_cd ='I'  and  inf_billnom.year + inf_billnom.month between '202001' and '202001'   ) or  (  inf_billnom.ix_cd ='E'  and  inf_billnom.year + inf_billnom.month between '202001' and '202001'  ) )  Group by  inf_billnom.year,case inf_billnom.ix_cd when 'I' then inf_billnom.consignee else inf_billnom.shipper end  Order by  inf_billnom.year,case inf_billnom.ix_cd when 'I' then inf_billnom.consignee else inf_billnom.shipper end;"""


df = pd.read_sql_query(query,cnxn)

错误：

线程 django-main-thread 中的异常：Traceback（最近一次调用）：文件“C:\Users\kctadmin\Envs\django3_dash\lib\site-packages\pandas\io\sql.py”，第 1725 行,在执行
cur.execute(*args,**kwargs) pyodbc.ProgrammingError: ('42000','[42000] [Microsoft][ODBC sql Server Driver] 语法错误或违反访问规则 (0) (sqlExecDirectW)')>

上述异常是以下异常的直接原因：

回溯（最近一次调用最后一次）：文件“c:\users\kctadmin\appdata\local\programs\python\python37\lib\threading.py”，第 926 行，在 _bootstrap_inner
self.run() 文件“c:\users\kctadmin\appdata\local\programs\python\python37\lib\threading.py”，第 870 行，运行中
self._target(*self._args,**self._kwargs) 文件“C:\Users\kctadmin \Envs\django3_dash\lib\site-packages\django\utils\autoreload.py”，第 53 行，在包装器中
fn(*args,**kwargs) File "C:\Users\kctadmin\Envs\django3_dash\lib\site-packages\channels\management\commands\runserver.py",line 75,in inner_run
('42000','[42000] [Microsoft][ODBC sql Server Driver] 语法错误或违反访问规则 (0) (sqlExecDirectW)')

谢谢