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Home/ Questions/Q 4027276
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Editorial Team
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Editorial Team
Asked: May 20, 20262026-05-20T11:04:36+00:00 2026-05-20T11:04:36+00:00

HI all , i have a table with column email [someone@email.com] , i have

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HI all ,

i have a table with column email [someone@email.com] , i have 2.8 million records and i created a new column user and wish to add everything before the @ sign in the email field to the user field , is it possible with pure MySQL ?

Thank you .

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  1. Editorial Team
    Editorial Team
    2026-05-20T11:04:37+00:00Added an answer on May 20, 2026 at 11:04 am

    Try with:

    UPDATE table
       SET user = SUBSTRING_INDEX(email, '@', 1)
    
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