How do I convert from BLOB to TEXT in Mysql?

After some googling for you i've found this. It's an answer to a person who wants to convert blob to char(1000) with utf8 encoding

CAST(a.ar_options AS CHAR(10000) CHARACTER SET utf8)

This is his answer. There is probably much more you can read about CAST right here. Hope it helps some.

up vote31down vote

Thats unnecessary, just use SELECT CONVERT(column USING utf8) FROM..... instead of justSELECT column FROM.....

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edited May 25 at 14:32 davenpcj 2,71341425

answered Nov 19 '10 at 3:57 Yuma 31132

1

This doesn't work for me. – chaostheory Jun 21 '11 at 21:06

4

Usage: SELECT CONVERT(column USING utf8) FROM table; – bmaupin Oct 2 '12 at 19:32

This works great for those GROUP_CONCATs that convert your output to blobs and you really want them as strings. I had an issue similar to the OP's while using Node.JS with the node-mysql library - this fixed all group_concat issues. – marksyzm Jul 26 at 13:53

up vote1down vote

or you can use this function DELIMITER $$ CREATE FUNCTION BLOB2TXT (blobfield VARCHAR(255)) RETURNS longtext DETERMINISTIC NO SQL BEGIN RETURN CAST(blobfield AS CHAR(10000) CHARACTER SET utf8); END $$ DELIMITER ; share|improve this answer

http://stackoverflow.com/questions/948174/how-do-i-convert-from-blob-to-text-in-mysql

select * from test_table where Test_data = CAST( blobObject AS CHAR );