I have 22 database fields of type longtext. If I try saving 12 of the fields with the following data I get the following error:
#1118 - Row size too large. The maximum row size for the used table type, not
counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs
It saves fine if I only save 11 fields. Here's the data:
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
How can I fix the issue? How can I increase the bytes of the row size so it is more than 8126?
The problem is the row size limit for InnoDB tables, in this links you can find some approaches to solve this:
http://www.mysqlperformanceblog.com/2011/04/07/innodb-row-size-limitation/
https://dba.stackexchange.com/questions/6598/innodb-create-table-error-row-size-too-large
Columns of type Varchar's, text, and blob arent included in the innodb row size limit.. so if you have a lot of columns that aren't you can get that error.
I had a load of char(1)'s that I changed to varchar and it fixed the problem nicely
Related
I want to extend the length of my one column from my MyISAM table that currently have a billion of records with data type varchar from 30 to 50 because I found out that there is some data that was truncated during uploading because the string is more than 30.
My question is, if I updated the length of this column, is it going to alter all records from my table? If yes, how long it will takes if I have a billion of records on my database?
How long it will take depends on your server config as well as your MySQL config. However, a billion records is not way too large. Since this is varchar type, it will not take a lot of extra spaces for rows where you do not use those extra 20 characters you get. Unlike other data types, Varchar does not occupy space based on your table configuration, but based on the actual length of data you store in it.
I've searched for this subject on the site, and found some tips, but non of them is working for me.
In VB net I am making a table in MySQL (InnoDB), first I will make all the columns and then I fill them with data. But when I am trying to make a table with many columns, I get this error:
Row size to large. The maximum row size for the used table type, not counting BLOBs, is 8126. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs.
It is crashing when I want more then 196 columns.
I already tried the row format at compressed, but then my maximum is 186 columns (?!). The maximum amount of columns is 300 for my project. I've searched n the config of mySQL workbench 6.3, but can't find the solution. So currently my settings are standard by wizard creation. All the data in the table is TEXT.
What is the MySQL VARCHAR max size?
I have searched on stackoverflow about varchar vs text and studied the documentation.
Iam not sure if i understood it the right way but let me ask you this. I have got Mysql version 5.5.34 and yes the maximum varchar size is 65535 bytes and the text content on my website cannot exceed more than 600 characters, I would prefer using varchar(600) rather than Text.
Since varchar is stored inline with table and faster and when I read all the answers of the question.
rajukoyilandy answer
varchar has 64K row limit
paxdiablo answer
if your row size is approaching 64K, you may want to examine the schema of your database. It's a rare table that needs to be that wide in a properly set up (3NF) database - it's possible, just not very common.
If you want to use more than that, you can use the BLOB or TEXT types. These do not count against the 64K limit of the row
So I have decided to use Text
http://dev.mysql.com/doc/refman/5.0/en/column-count-limit.html
When I have seen this documentation on the very top it says
Every table (regardless of storage engine) has maximum row size of 65,535 bytes.
Storage engines may place additional constraints on this limit,
reducing the effective maximum row size
My question is, So no matter what you use Text or Varchar, the row limit is 65kb? or if you use Text there is no row limit? Any help is greatly appreciated.
http://dev.mysql.com/doc/refman/5.0/en/column-count-limit.html
BLOB and TEXT columns count from one to four plus eight bytes each
toward the row-size limit because their contents are stored separately
from the rest of the row.
So yes no matter what you use the row limit is 65KB, but since BLOB and TEXT types are stored separately the length of the contents do not count towards the row size, just the initial one to four plus eight bytes do.
This is why you can use LONGBLOB LONGTEXT to store huge files and still be able to have more than just a single LONGBLOB/LONGTEXT column in a table.
As for which is better VARCHAR(600) vs TEXT, with VARCHAR you would be taking up 1802 bytes per column so you still have lots of room to work with when it comes to the row limit. But for performance you would have to do benchmarks as this comment points out inline storage is faster if it frequently used in your queries.
The row size limit applies to the amount of space required to store the row itself, which is not the same as the amount of space required to store the data in the row. From the page you linked to:
BLOB and TEXT columns count from one to four plus eight bytes each toward the row-size limit because their contents are stored separately from the rest of the row.
This is why you can store huge amounts of data in a BLOB or TEXT field without exceeding the row-size limit.
I'm trying to update a row in a table but it comes back with:
Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. You have to change some columns to TEXT or BLOBs
All of my fields apart from the ID are BLOBs so I have no idea what the error is meaning.
Can anybody help?
Just change your columns type to TEXT as mysql said.
I have table with 100000 of rows. This table also contains a BLOB field, so the table size is around 1GB. This table is scanned regularly by many queries in the application. The blob field is used only in one select query . This table also contains 5 index with size 10MB. My Doubts are.
1 ) Is it better to move the blob filed to another tables? Will this improve the speed of read operation from table?
2) The BLOB filed is used to store HTML data about 6 Kib in size. Is BLOB type apt for this?
If you can change the schema:
Store images in application server and store relative path of those images. this will result less overhead
Moving the blob field to another table can also be a good idea.
Why you are keeping html data in blob? are you seriously storing the image styles/css with this? Not recommended at all!