创建models.py时发现row size太大问题，如何解决

Question

How to solve this issue:

raise errorclass(errno, errval) django.db.utils.InternalError: (1118, u'Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs')

can please help to solve this problem, here is the model code:

from django.db import models

class Newsdeatils(models.Model):
    news_provider_id = models.CharField(max_length=5000)
    news_title =  models.CharField(max_length=5000)
    news_details = models.CharField(max_length=5000)
    news_image = models.CharField(max_length=5000)
    news_page_url = models.CharField(max_length=5000)
    next_page = models.CharField(max_length=5000)
    news_des = models.CharField(max_length=5000)

Answer 1

Just use TextField for such length requirements.

Usually, TextFields are not really limited to a specific length w.r.t. to implementation limits (regarding filesystems or the general database system used). TextFields behave very similar to CharFields in usage. You can read about the differences here .

Your code would change to something like that:

from django.db import models

class Newsdeatils(models.Model):
    news_provider_id = models.TextField(max_length=5000)
    news_title =  models.TextField(max_length=5000)
    news_details = models.TextField(max_length=5000)
    news_image = models.TextField(max_length=5000)
    news_page_url = models.TextField(max_length=5000)
    next_page = models.TextField(max_length=5000)
    news_des = models.TextField(max_length=5000)

Please note that setting the max_length attribute on TextField is not required (it is when using CharField ). this max_length attribute is also not enforced on the db-level but only used for form validation.

Other things to consider in your model: Why is the news_provider_id a CharField ? should that not be a ForeignKey ? Same goes for things like the news_image field. This should probably be a BinaryField .

Answer 2

I get answer ,the issue   was  i had given all fields as 5000 as max_length , A table contain only limited size and i alter the column size