The Question :
264 people think this question is useful
What MySQL query will do a text search and replace in one particular field in a table?
I.e. search for
foo and replace with
bar so a record with a field with the value
hello foo becomes
The Question Comments :
The Answer 1
501 people think this answer is useful
field to match your table name and field in question:
UPDATE table_name SET field = REPLACE(field, 'foo', 'bar') WHERE INSTR(field, 'foo') > 0;
The Answer 2
89 people think this answer is useful
SET field = replace(field, 'string-to-find', 'string-that-will-replace-it');
The Answer 3
9 people think this answer is useful
UPDATE table SET field = replace(field, text_needs_to_be_replaced, text_required);
Like for example, if I want to replace all occurrences of John by Mark I will use below,
UPDATE student SET student_name = replace(student_name, 'John', 'Mark');
The Answer 4
7 people think this answer is useful
And if you want to search and replace based on the value of another field you could do a CONCAT:
update table_name set `field_name` = replace(`field_name`,'YOUR_OLD_STRING',CONCAT('NEW_STRING',`OTHER_FIELD_VALUE`,'AFTER_IF_NEEDED'));
Just to have this one here so that others will find it at once.
The Answer 5
6 people think this answer is useful
In my experience, the fastest method is
UPDATE table_name SET field = REPLACE(field, 'foo', 'bar') WHERE field LIKE '%foo%';
INSTR() way is the second-fastest and omitting the
WHERE clause altogether is slowest, even if the column is not indexed.
The Answer 6
1 people think this answer is useful
The Replace string function will do that.
The Answer 7
0 people think this answer is useful
I used the above command line as follow:
update TABLE-NAME set FIELD = replace(FIELD, ‘And’, ‘and’);
the purpose was to replace And with and (“A” should be lowercase). The problem is it cannot find the “And” in database, but if I use like “%And%” then it can find it along with many other ands that are part of a word or even the ones that are already lowercase.