pyodbc SQLSERVER光标小数四舍五入

Question

我得到这个问题，我使用撷取结果（使用fetchall在这个例子中）的任何pyodbc API中提取方法，十进制值取整到两个地方。在MSSQL数据库中，更特别是在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为4个地方。

我试图格式化结果集我使用fetchall后它会显示四个小数位，但它仍然四舍五入它虽然。例如14.5272 => 14.5300。

在模板还我尝试使用floatformat过滤无济于事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的配置文件。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 

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 

另外，我有我的设置文件（INSTALLED_APPS）和工程应用同步正确，我在我的所有应用程序中使用缓存，我不认为这是问题的根源，如果这应该很重要。

除此之外四舍五入问题，一切工作正常，任何帮助表示赞赏。

Answer 1

我想通了。所以我打电话的存储过程中，浮动字段的类型为MONEY，并且正在四舍五入为2个位置。我将它改为十进制（7,4）现在一切正常。我没有对odbc/freetds配置进行任何更改，也不需要使用过滤器浮动格式。再次感谢，beargle