如何在MySQL中将BLOB转换为VARCHAR? [英] How do I convert BLOB into VARCHAR in MySQL?
问题描述
它在共享主机中,并且我可以通过Navicat进行访问.我有BLOB的字段,我想将其转换为VARCHAR.我已经在设计屏幕中尝试过,但是一切都丢失了.我备份了.
It is in a shared host and I access with Navicat. I have field with BLOB and I want to convert it into VARCHAR. I've tried in the design screen but everything was lost. I backed up.
推荐答案
尝试使用它,我在一段时间前发现它,可以将其转换为char
,而不是Varchar2
或Varchar
,没有测试一下.试试:
try using this, I found it some time ago, you can convert it to char
, not to Varchar2
or Varchar
, haven't test it yet. Try:
CAST(a.ar_options AS CHAR(10000) CHARACTER SET utf8)
MySQL对待数据的唯一性.因此,Blob和Text之间存在差异.文本只是表示以原始形式存储的文本字符串,而不是以二进制形式存储,而blob是以二进制形式存储的文本字符串.
MySQL treat data unique. Hence there is a difference between Blob and Text. Text simply means a text string stored as original, not in binary, whereas a blob is a text string stored as a binary.
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