MySQL uses the client and select methods to view the summary of blob type fields

SELECT How to use query statements

Generally, after opening the table directly with the client BLOB Type field can only see the size of the field directly, but not the content , for example ：
In this way

At this time, you can use the CAST Function converts the type of content to get the actual query result, such as ：

here CAST Convert function for type , Not only can BLOB turn CHAR or VARCHAR Others can be
post_message Yes, the type in my table is BLOB Field of

SELECT CAST(post_message AS CHAR) FROM `notification_log` ;

If you need to see one , Then add where The conditions are good , Capitalization here is just my habit , It can also be lowercase
The actual results are as follows ：

Here is a JSON strand , If you save other ordinary content, you can also see

Client mode

With the most common navicat As an example, here we introduce
First select the current BLOB Field Then right click and select

After popping up, select Save as 1.txt Format , You can choose one name by yourself , Don't repeat

Open directly at last txt Text can see the content ,txt Will automatically convert the content into general characters