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hello.

i has using delphi 7 and MySQL Data Access Components 4.30.

at the error....

SQL.SQL.Clear;
SQL.SQL.text := 'Update client set image = :img where codigo='1';
SQL.ParamByName('img').LoadFromFile(arquivo.text,ftBlob);
SQL.Execute;

this error

Undeclared indentifier : 'ftBlob'

not compiler permission the applicattion.

Check that DB unit is included to the uses clause of the unit where the error arises.