Convert BLOB to TEXT in MySQL - SQL Guide

If you're working with MySQL databases, you may come across a situation where you need to convert a BLOB datatype to TEXT. This is a common task when dealing with large amounts of binary data, such as images or documents.

To convert a BLOB column to TEXT in MySQL, you can use the CAST() or CONVERT() function. These functions allow you to convert data from one datatype to another.

Here's an example of how to use the CAST() function to convert a BLOB column to TEXT:


SELECT CAST(blob_column AS CHAR(10000) CHARACTER SET utf8) AS text_column
FROM your_table;

In this example, replace "blob_column" with the name of your BLOB column and "your_table" with the name of your table. The "CHAR(10000) CHARACTER SET utf8" argument specifies the maximum length of the TEXT column and the character set.

Alternatively, you can use the CONVERT() function to achieve the same result:


SELECT CONVERT(blob_column USING utf8) AS text_column
FROM your_table;

In this example, replace "blob_column" with the name of your BLOB column and "your_table" with the name of your table. The "USING utf8" argument specifies the character set to use for the conversion.

In conclusion, converting a BLOB column to TEXT in MySQL is a simple task that can be accomplished using either the CAST() or CONVERT() function. Just remember to specify the appropriate character set for the conversion to ensure that your data is correctly transformed.

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