Tuesday, August 28, 2018

Re: Foreign key auto-created column position in table


Saying that, why is the order of columns important to you?  We don't typically worry about the order of columns when working with databases. 
We have some old software that use "positional" SQL query parameters (like a "INSERT INTO table VALUES(...)" ), so we can't add, remove or move the fields in this table :(


 
вт, 28 серп. 2018 о 16:57 Matthew Pava <Matthew.Pava@iss.com> пише:

You can probably just modify the migrations file after it is generated.  Just move the statements around.  I haven't tested it myself.

Saying that, why is the order of columns important to you?  We don't typically worry about the order of columns when working with databases.

 

From: django-users@googlegroups.com [mailto:django-users@googlegroups.com] On Behalf Of Vladislav Solovei
Sent: Tuesday, August 28, 2018 8:05 AM
To: Django users
Subject: Foreign key auto-created column position in table

 

Hil.

 

I have a simple model:

 

class SipPeer(models.Model):

    name = models.CharField(primary_key=True, max_length=40)

    type = models.CharField(max_length=10)

    defaultuser = models.CharField(max_length=40, blank=True, null=True)

    secret = models.CharField(max_length=40, blank=True, null=True)

    language = models.CharField(max_length=10, blank=True, null=True)

    call_limit = models.IntegerField(db_column='call-limit', blank=True, null=True)

    context = models.CharField(max_length=40)

    subscribecontext = models.CharField(max_length=40, blank=True, null=True)

    allowtransfer = models.CharField(max_length=20, blank=True, null=True)

    disallow = models.CharField(max_length=20, blank=True, null=True)

    allow = models.CharField(max_length=20, blank=True, null=True)

    host = models.CharField(max_length=40, blank=True, null=True)

    ipaddr = models.CharField(max_length=45)

    defaultip = models.CharField(max_length=20, blank=True, null=True)

    port = models.IntegerField(blank=True, null=True, default=0)

    insecure = models.CharField(max_length=20, blank=True, null=True)

    nat = models.CharField(max_length=40, blank=True, null=True)

    regseconds = models.IntegerField(blank=True, null=True)

    useragent = models.CharField(max_length=128, blank=True, null=True)

    lastms = models.IntegerField(blank=True, null=True)

    phone = models.ForeignKey(Phone, models.CASCADE, db_column='realnum', blank=True, null=True, related_name='peers', db_index=False)

    call_priority = models.IntegerField(blank=True, null=True)

    t38pt_udptl = models.CharField(max_length=40, blank=True, null=True)

    canreinvite = models.CharField(max_length=16, blank=True, null=True)

    fullcontact = models.CharField(max_length=255, blank=True, null=True)

    regserver = models.CharField(max_length=255, blank=True, null=True)

    deny = models.CharField(max_length=95, blank=True, null=True)

    permit = models.CharField(max_length=95, blank=True, null=True)

    qualify = models.CharField(max_length=6, blank=True, null=True)

    callbackextension = models.CharField(max_length=40, blank=True, null=True)

    setvar = models.CharField(max_length=40, blank=True, null=True)

    t38pt_usertpsource = models.CharField(max_length=40, blank=True, null=True)

    progressinband = models.CharField(max_length=5, blank=True, null=True)

    transport = models.CharField(max_length=24, blank=True, null=True)

    trustrpid = models.CharField(max_length=4, blank=True, null=True)

 

    class Meta:

        managed = True

        db_table = 'sippeers'

 


After I do "make migrations" and "make migrate", the table column "realnum"  is placed after all columns (but not between lastms and call_priority):

| canreinvite        | varchar(16)  | YES  |     | NULL    |       |

| fullcontact        | varchar(255) | YES  |     | NULL    |       |

| regserver          | varchar(255) | YES  |     | NULL    |       |

| deny               | varchar(95)  | YES  |     | NULL    |       |

| permit             | varchar(95)  | YES  |     | NULL    |       |

| qualify            | varchar(6)   | YES  |     | NULL    |       |

| callbackextension  | varchar(40)  | YES  |     | NULL    |       |

| setvar             | varchar(40)  | YES  |     | NULL    |       |

| t38pt_usertpsource | varchar(40)  | YES  |     | NULL    |       |

| progressinband     | varchar(5)   | YES  |     | NULL    |       |

| transport          | varchar(24)  | YES  |     | NULL    |       |

| trustrpid          | varchar(4)   | YES  |     | NULL    |       |

| realnum            | int(11)      | YES  | MUL | NULL    |       |

+--------------------+--------------+------+-----+---------+-------+

 

 

Can i somehow override this (default?) behavior?

 

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