mysql concatenate question

Dear Experts,

I select the mobile phone numbers from my database where the length of the mobile number is one missing.
SELECT * FROM `mytable` WHERE length(mobile)='10'

the mobile numbers are supposed to be 11 characters, however I have 170 mobile number's length is 10, starting without 0

what I need to do is to select these 170 numbers and concatenate with 0

how can I do that with mysql?
BRDigital MarketingAsked:
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Ryan ChongSoftware Team LeadCommented:
tried use concat function?


SELECT a.*, concat('0', mobile) newValue  FROM `mytable` a WHERE length(

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to do the update if above is working fine:

Update `mytable` set mobile = concat('0', mobile) where length(

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Pawan KumarDatabase ExpertCommented:
>>what I need to do is to select these 170 numbers and concatenate with 0

To select this data.

From yourtable
Where len(concat('0', mobile))=11

To update..use below

Update yourtable
Set mobile = concat('0', mobile)
Where len(concat('0', mobile))=11
BRDigital MarketingAuthor Commented:
thank you both
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