change varchar to longtext

Mon, 02 Feb 2015 01:21:07 +0000

hi

first of all thank you for your awesome Q2A system and sorry for my weak english writing skill(i'm persian)

i want to change 8000 content character limitation.i try that by change db/maxima.php definitions.but not work(just remove "8000 character limitation error message" and cut the content automatically)

next i try to change database qa_post:content but if i increase 8000 to more than 20000 it change automatic VARCHAR to "mediumtext" type.

i need more than 20000.how can get that?

i change Varchar to Longtext and content send complete.is it problem with change varchar to longtext?(in present and future(if i want install plugins and update core and etc)

what is diffrence between varchar and text(exactly longtext)?

thank you VERY much

Changing qa_posts>content from VARCHAR to TEXT to write more text - consequences?

Tue, 10 Dec 2013 02:32:55 +0000

I am in a situation where the 8000 characters allowed are not sufficient for posting content. I tried to increase the 8000 to 20000 but get the mysql error notice:

1118 - Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. You have to change some columns to TEXT or BLOBs

When I change VARCHAR to TEXT, what are the consequences? Will q2a get any problems with that?

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EDIT: I changed 'content' from VARCHAR to MEDIUMTEXT now and it seems to work.

With MediumText you get: max. ~16MB – 16,777,215 character – around 4,194,303 utf-chars

If you need to do the same, after the DB changes, you need to edit file qa-db-maxima.php:

@define('QA_DB_MAX_CONTENT_LENGTH', 500000); // before 8000 (varchar)

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change varchar to longtext

Changing qa_posts>content from VARCHAR to TEXT to write more text - consequences?