mysql add http:// to all records in website column - mysql

I'm almost done transferring/reconstructing a substantial mysql db for new application. Column 'website' shows 'www.example.com'. Because the new application reads it as a hyperlink, I need the column to read 'http://www.example.com'. Is there a way to add the 'http://' in the beginning of each record for that column? Thanks in advance!


You can use the CONCAT function to do that:
UPDATE tbl SET website=CONCAT('http://', website);
If you want to get cleverer and only update columns which don't already have http:// prepended, try
UPDATE tbl SET website=CONCAT('http://', website)
WHERE website NOT LIKE 'http://%';
Update
To prevent update to columns that have no site in them currently use this
UPDATE tbl SET website=CONCAT('http://', website)
WHERE website NOT LIKE 'http://%' AND website<>'';


You can use the concat command. Something like
SELECT CONCAT('http://', website) FROM table


Use concat to generate the new column:
UPDATE table1 SET website = CONCAT("http://", website);

Related

MySql Add onto an exisiting entry in the database

Just wondering is it possible to add onto an exisiting entry in the database without having to do a query to look whats in there?
Ive done it with numbers before like
UPDATE table SET views = views +1
But is there a way to do it with a string?
Thanks

UPDATE table SET views = CONCAT(views,'some text to add on to it')

What you are looking for is CONCAT() function:
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_concat
UPDATE table SET field = CONCAT(field, "some str" ) WHERE id = 123;

How do I remove an email domain value and add a new one in a column - mysql

So I have a bunch of users in a column that get refreshed as:
Bill#test.comXYZ
Tom#test.comXYZ
John#test.comXYZ
We refresh the database each week and I need to update these appropriate emails to:
Bill#domain.com
Tom#domain.com
John#domain.com
I figured I can use concat to do the latter, but I am stuck on the former issue. Is there a way to split the values (like split Bill#test.comXYZ into Bill - #test.comXYZ and then remove the #TEXT values?).
Anyways, any help will be much appreciated.

You can use the mySQL replace function, i.e.
UPDATE mytable
set myfield = replace (myfield, '#test.comXYZ', 'domain.com')
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace

UPDATE mysql database replace strings

I have in my db strings like www.domain.com and http://www.domain.com. I want to prepend to all entries the http:// but not affect other urls and as a result have this: http://http://www.domain.com
Can this be done with mysql only? I have used REPLACE(field,'www','http://www'), but this replaces also the http://www with http://http://www
Thanks in advance
EDIT
I forgot to mention that in the field there might be entries which don't contain www or http://www and therefore I don't want to alter or maybe there are entries like <p>domain</p> in which CONCAT() prepends the http:// before <p>

Try adding a WHERE clause to your update to only update fields that do not already have 'http://'. Test it out like this
SELECT CONCAT('http://', field) FROM foo WHERE LOCATE('http://', field)=0
and your UPDATE syntax would be:
UPDATE foo SET field=CONCAT('http://',field) WHERE LOCATE('http://', field)=0

I won't worry about performance as this seems like a one-off kind of script. That said, you can couple LEFT and CONCAT to achieve this:
UPDATE mytable
SET mycolumn = CONCAT('http://',mycolumn)
WHERE LEFT(mycolumn,7) <> 'http://'
Do note that I'm not taking CapItaliZation in to account. You may also want to consider sanitizing the information either before adding it to the database, or maybe make a trigger to do it for you.

Search and Replace Query - mysql replace
Here is the SQL query to replace string in your MySQL database table:
UPDATE table_name SET column_name = REPLACE(column_name,'original_string','replace_string')
Here is what I did to change the path URLs in all my previous posts.
UPDATE `wp_posts` SET `post_content` = REPLACE(`post_content`,'http://localhost/','https://sureshkamal1.wordpress.com/')

add the same thing to a table column by sql command

there is a table named test. in it. there are some columns as this:
001.jpg
...
999.jpg
now i want to use a sql command to add a url before them. as this http://www.example.com/xxx/001.jpg.....is there a way to get this? thank you.

There is two way to accomplish this task. It depends up to you that what you want?
If you want to add a url in the database permanently then you have to use update query with no any where condition, Although if you want to only show your field with this added url you have to use select query.
Please find below the examples for both:
Suppose that your table column name is imageName then UPDATE query will be
UPDATE test SET imageName = CONCAT("http://www.example.com/xxx/", imageName);
And the SELECT query will be
SELECT CONCAT("http://www.example.com/xxx/", imageName) FROM test;

Supposing that your field is called url, a simple UPDATE query will do:
UPDATE test SET url = CONCAT("http://", url);

How to concatinate text on existing database entry?

I have a table, whose fields are
id, name, link
the link holds the name of the page like "link" = "index.php". Now I want to update this field
and add "page=" in front of "index.php". Using this method I would like to update every entry in my table.
My desired SQL syntax need to be something like this
UPDATE mytable set link= 'page=' + <existing value of link>;
Anyone know what to accomplish this?

If you're using MySQL you can try:
UPDATE mytable SET link = CONCAT("page:", link)

UPDATE mytable Set link = "page:" || link