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ERRO em Store Procedure no MySQl


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Caros mestres do MySQL estou com o seguinte problema na SP no MySQL, conforme abaixo:

-- --------------------------------------------------------------------------------

-- Routine DDL

-- Note: comments before and after the routine body will not be stored by the server

-- --------------------------------------------------------------------------------


CREATE DEFINER=`root`@`localhost` PROCEDURE `exibir_clientes`(

IN _filtro varchar(100)



IF (_filtro IS NULL) THEN

    select * from clientes;


    select * from clientes WHERE cli_nome LIKE `%` + _filtro + `%` - esta linha esta com erro

    OR cli_end LIKE `%` + _filtro + `%`

    OR cli_email LIKE `%` + _filtro + `%`

    OR cli_tel LIKE `%` + _filtro + `%`



Fico no aguardo de uma resposta, desde já atenciosamente.  😞

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Claro... o MySQL não vai concatenar o filtro. Tens que ser tu a criar o filtro antes de o adicionares à query, dentro da stored procedure. Para além disso, o '+' não é um operador de concatenação de strings em MySQL.

“There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult.”

-- Tony Hoare

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