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