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Editorial Team
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Asked: 2026-06-03T04:37:55+00:00

I have one field when importing that can contain large data, it seems that

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I have one field when importing that can contain large data, it seems that CSV has unofficial limitation of about 65000 (likely 65535*) character. as both libreoffice calc and magento truncating the data for that particular field. I have investigated well and I’m certain it is not because of a special character or quotes. the data pretty straight forward, the lines are similar in format to each other.

Question: How to increase that size? or at least where I should look to find it?

Note: I counted in libreoffice writer and it was about 65040. but probably with carriage return characters it could reach 65535

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  1. Editorial Team

    You are right, there is a limitation in Magento, because it sets texts fields as TEXT in MySQL database and, according to MySQL docs, this kind of field supports a maximum of 65535 chars.

    http://dev.mysql.com/doc/refman/5.0/es/storage-requirements.html

    So you could change the column type in your Magento database to use MEDIUMTEXT. I guess the correct place is in the catalog_product_entity_text table, where you should modify the ‘value’ field type to match your needs. But please, keep in mind this is dangerous. Make a full backup before trying. And you may even need to play with core files… not recommended!

    I’m having the same issue with 8 products from a list of more than 400, and I think I’m not going to mess with Magento core and database, we can reduce the description strings for those few products.

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