pyodbc sqlserver游标十进制舍入

时间:2013-04-23 12:24:32

标签: python sql-server django pyodbc freetds

我遇到这个问题,我使用pyodbc API中的任何获取方法获取结果(在本例中为fetchall),小数值四舍五入到两个位置。在MSSQL数据库中,特别是在SQL管理工作室中,当我执行存储过程时,余额,借方和贷方的值正确显示到4个位置。

我在fet fetll之后尝试格式化结果集,它确实显示了四个小数位但是它仍然将它向上舍入。例如14.5272 => 14.5300。

在模板中我也尝试使用floatformat过滤器无效但它仍然保持四舍五入:

<td >{{ Accounts.debits|floatformat:4 }}</td>

models.py

from django.core.cache import cache
from django.conf import settings  

class Account(models.Model):                                                                                               
    account = models.IntegerField(primary_key=True, db_column='Account')
    description = models.TextField(db_column='Description')                      
    balance = models.DecimalField(decimal_places=4, max_digits=19, db_column='Balance') 
    debits = models.DecimalField(decimal_places=4, max_digits=19, db_column='Debits')
    credits = models.DecimalField(decimal_places=4, max_digits=19, db_column='Credits')                                                           

class Meta:                                                                                                                       
    db_table = 'Account'                                                                                               
    permissions = (("view_accounts", "Can view accounts"),                                                  
    )                                                                                                                             

    @staticmethod                                                                                                                     
   def resultSet(startDate, endDate):                                                                                                
       try:                                                                                                 
           cur = connection.cursor()                                                                                                                                                                                                                                      
           cacheKey = 'Account_%s_%s' %(startDate, endDate)                                                                        
           cachedSp = cache.get(cacheKey)                                                                                            
           print cacheKey                                                                                                            
           if not cachedSp:                                                                                                          
               print 'not cached'                                                                                                    
               cur.execute('database.dbo.AccountsSelect %s, %s', (str(startDate), str(endDate)))               
               cachedSp = cur.fetchall()                                                                                             
               #for row in cachedSp:                                                                                                  
                   #if row[5]!= -1:                                                                                                   
                       #print format(row['debit'],'%4f')                                                                              
               cachedSp = cur.fetchall()                                                                                             
               cur.close()                          

               cache.set(cacheKey,cachedSp,settings.CACHE_CUSTOM_APP_SECONDS)                                                        
       except Exception, e:                                                                                                          
           print e.args                                                                                                              

       return [Account(*row) for row in cachedSp]    

以下是odbc / freetds配置文件。我使用SQL server 2008.Freetds v1.12,django-pyodbc v0.9和pyodbc v3.0.6。

freetds.conf

[global]
    # TDS protocol version
    ; tds version = 8.0
    # Whether to write a TDSDUMP file for diagnostic purposes
    # (setting this to /tmp is insecure on a multi-user system)
    ;   dump file = /tmp/freetds.log
    ;   debug flags = 0xffff

    # Command and connection timeouts
    ;   timeout = 10
    ;   connect timeout = 10

    # If you get out-of-memory errors, it may mean that your client
    # is trying to allocate a huge buffer for a TEXT field.
    # Try setting 'text size' to a more reasonable limit
    text size = 64512

[tes-db-1]
    host = tes-db-1.doamin.test.com
    port = 1433
    tds version = 8.0

的odbc.ini

[default]
Driver = FreeTDS
Description = ODBC connection via FreeTDS
Trace = No
Servername = SERVER
Database = DATABASE

odbcinist.ini

[FreeTDS]
Description      = TDS Driver (Sybase / MS-SQL)
Driver           = /usr/lib/x86_64-linux-gnu/odbc/libtdsodbc.so
Setup            = /usr/lib/x86_64-linux-gnu/odbc/libtdsS.so
CPTimeout        =
CPReuse          =
FileUsage        = 1
client charset   = utf-8

此外,我在我的设置文件(INSTALLED_APPS)中有应用程序并且项目已正确同步,我在所有应用程序中使用缓存,如果这很重要,我认为这不是问题的根源。

除了这个四舍五入的问题,一切都工作正常,任何帮助表示赞赏。

1 个答案:

答案 0 :(得分:1)

我想通了。所以我调用的存储过程中,float字段的类型为 MONEY ,并且被舍入到2个位置。我将其更改为十进制(7,4),现在一切正常。我没有对odbc / freetds配置进行任何更改,也没有使用filter float格式。再次感谢,熊市