I'm using Wordpress and have a load of custom fields where I need to do a string replace on. Basically I have a price field which is in the example format:
from 113.800
I need to remove the word 'from', the space after it and the dot between the number. All the fields are in this format, how can I use a MySQL replace function to do this?
Thanks
REPLACE() doesn't support regular expression matching, so you'll have to do it in a more clumsy way:
UPDATE wp_sometable
SET price_field = REPLACE(REPLACE(price_field, 'from ', ''), '.', '');
Related
I am using drill sql query on json data. But one of my json field seems to have few characters e.g. '\n' & '^' etc which I want to replace on the fly.
Currently, I am calling REGEXP_REPLACE twice as below -
SELECT REGEXP_REPLACE(REGEXP_REPLACE('aaaa\nbbbb^cccc', '\\n', ' '), '\^', ' ') FROM (VALUES(1));
How can I do that using REGEXP_REPLACE method only once?
The below must work -
SELECT REGEXP_REPLACE('aaaa\nbbbb^cccc', '\\n|\^', ' ') FROM (VALUES(1));
But note that in this case, the character you are replacing with, will be same for all. If you have to replace with different characters then you would need to go with your approach only as below -
SELECT REGEXP_REPLACE(REGEXP_REPLACE('aaaa\nbbbb^cccc', '\\n', 'X'), '\^', 'Y') FROM (VALUES(1));
I'm trying to remove parenthesis from the area code of a number. I'm able to do so but when I try to concatenate the two Replace functions, the numbers repeat with only one parenthesis removed.
This is what I tried so far:
SELECT HomePhone, REPLACE(HomePhone, '(', '') +
REPLACE(HomePhone, ')', '') AS Expr1
FROM dbo.Employees
http://i.imgur.com/4iJoFzE.png
Nest don't add
Replace(Replace(HomePhone,')',''),'(','')
Look at how the function replace works. It expects string With Text To Evaluate, string to replace, string to replace with)
By adding them you should be getting the number listed twice, but if the data type isn't long enough it may be truncating values. by nesting you're telling the system to replace the ) and then use that string w/o the ) to have the ( replaced with ''.
You cannot concatenate in this way, you must use the concat function in SQL. Or use thus:
SELECT HomePhone, REPLACE(REPLACE(HomePhone, ')', ''), '(', '') AS Expr1 FROM dbo.Employees
In not a database guy but: I have mixed up data in a mySql database that I inherited.
Some Phone numbers are formatted (512) 555-1212 (call it dirty)
Others 5125551212 (Call it clean)
I need a sqlstamet that says
UPDATE table_name
SET Phone="clean'(Some sort of cleaning code - regex?)
WHERE Phone='Dirty'
Unfortunately there's no regex replace/update in MySQL. If it's just parentheses and dashes and spaces then some nested REPLACE calls will do the trick:
UPDATE table_name
SET Phone = REPLACE(REPLACE(REPLACE(REPLACE(Phone, '-', ''), ')', ''), '(', ''), ' ', '')
To my knowledge you can't run a regexp to replace data during the update process. Only during the SELECT statement.
Your best bet is to use a scripting language that you're familiar with and read the table and change it that way. Basically by retrieving all the entries. Then using a string replace to match a simple regexp such as [^\d]* and remove those characters. Then update the table with the new value.
Also, see this answer:
How to do a regular expression replace in MySQL?
I have some sentences in string in MySQL. And I need to replace substrings such as 'My' to 'my' if this word not first in sentence. How I can doing this?
CHAR, REPLACE, REPEAT, etc. I'd recommend reading mySQL ref: http://dev.mysql.com/doc/refman/5.5/en/string-functions.html
If you just want to replace several words, you can replace them, using this approach:
UPDATE str_test SET str = REPLACE(str, ' My', ' my')
fiddle
As the words inside the text will be preceded by space. But if you want a regexp replace, it will be a more difficult task:
How to count words in MySQL / regular expression replacer?
https://dba.stackexchange.com/questions/15250/how-to-do-a-case-sensitive-search-in-where-clause
MySql support for string is very limited. A quick solution would be to use something like this:
SELECT
CONCAT(
LEFT(col, 1),
REPLACE(SUBSTRING(col, 2), 'My', 'my')
)
Please see fiddle here. This will replace all the strings My to my, except the first one.
Or maybe this:
SELECT
col,
RTRIM(REPLACE(CONCAT(col, ' '), ' My ', ' my '))
FROM
yourtable
that will replace all whole words except the first one.
I have one column name phone_number in the database table.Right now the numbers stored in the table are format like ex.+91-852-9689568.I want to format it and just want only digits.
How can i do it in MySql ? I have tried it with using functions like REGEXP but it displays error like function does not exist.And i don't want to use multiple REPLACE.
One of the options is to use mySql substring. (As long as the format doesn't change)
SELECT concat(SUBSTRING(pNo,2,2), SUBSTRING(pNo,5,3), SUBSTRING(pNo,9,7));
if you want to format via projection only, use SELECT, you will only need to use replace twice and no problem with that.
SELECT REPLACE(REPLACE(columnNAme, '-', ''), '+', '')
FROM tableName
otherwise, if you want to update the value permanently, use UPDATE
UPDATE tableName
SET columnName = REPLACE(REPLACE(columnNAme, '-', ''), '+', '')
MySQL does not have a builtin function for pattern-matching and replace.
You'll be better off fetching the whole string back to your application, and then using a more flexible string-manipulation function on it. For instance, preg_replace() in PHP.
Try the following and comment please.
Select dbo.Regex('\d+',pNo);
Select dbo.Regex('[0-9]+',pNo);
Reference on RUBLAR.
So MYSQL is not like Oracle, hence you may just use a USer defined Function to get numbers. This could get you going.