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Editorial Team
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Asked: 2026-06-08T18:36:14+00:00

INSERT INTO registration( name, email, username) values(‘eswar’,(select email from registration),’manikandan’)

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INSERT INTO registration( name, email, username) values('eswar',(select email from registration),'manikandan')
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  1. Editorial Team

    The correct syntax is like this: 

    INSERT INTO registration( name, email, username) 
SELECT 'eswar', email, 'manikandan' FROM registration

    This inserts n lines (the number of lines in the registration table).

    To filter this you add a constraint to the select statement. 

    INSERT INTO registration( name, email, username) 
SELECT 'eswar', email, 'manikandan' FROM registration WHERE email="x@yahoo.com"

    You add the constant values to the SELECT STATEMENT not the other way around.

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