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Editorial Team
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Asked: 2026-05-18T01:15:47+00:00

There are a limit to use INNER JOIN? Original Query (Work just fine) I

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There are a limit to use INNER JOIN?

Original Query (Work just fine) I got 77 rows affected

    SELECT atendimento.id, atendimento.responsavel, atendimento.ocorrencia, 
           atendimento.idcontrato, cliente.nome as clinome, cliente.id as cliid, 
           atendimento.d_ini, usuario.apelido, tipos.descricao, tipos.id as tip 
      FROM atendimento 
INNER JOIN cliente ON atendimento.cliente=cliente.id 
INNER JOIN usuario ON atendimento.usuario=usuario.id 
INNER JOIN tipos ON atendimento.status=tipos.id 
     WHERE 1=1 AND (atendimento.status=10 OR atendimento.status=11) 
  ORDER BY tipos.id, atendimento.d_ini ASC

New Try: (Not working very well) it is limited to only 17 rows affected. The result here is the same except for the only 17 rows returned in my query. 

    SELECT atendimento.id, atendimento.responsavel, atendimento.ocorrencia, 
           atendimento.idcontrato, atend_os.protocolo, atend_os.tecnico, 
           cliente.nome as clinome, cliente.id as cliid, atendimento.d_ini, 
           usuario.apelido, tipos.descricao, tipos.id as tip 
      FROM atendimento 
INNER JOIN atend_os ON atendimento.id=atend_os.protocolo 
INNER JOIN cliente ON atendimento.cliente=cliente.id 
INNER JOIN usuario ON atendimento.usuario=usuario.id 
INNER JOIN tipos ON atendimento.status=tipos.id 
     WHERE 1=1 AND (atendimento.status=10 OR atendimento.status=11) 
  ORDER BY tipos.id, atendimento.d_ini ASC

What is going wrong here? does someone know why the result change?

Thanks a lot for any info!

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1 Answer

  1. Editorial Team

    try

     SELECT atendimento.id, atendimento.responsavel, atendimento.ocorrencia, 
           atendimento.idcontrato, atend_os.protocolo, atend_os.tecnico, 
           cliente.nome as clinome, cliente.id as cliid, atendimento.d_ini, 
           usuario.apelido, tipos.descricao, tipos.id as tip 
      FROM atendimento 
INNER JOIN cliente ON atendimento.cliente=cliente.id 
INNER JOIN usuario ON atendimento.usuario=usuario.id 
INNER JOIN tipos ON atendimento.status=tipos.id 
LEFT JOIN atend_os ON atendimento.id=atend_os.protocolo 
     WHERE 1=1 AND (atendimento.status=10 OR atendimento.status=11) 
  ORDER BY tipos.id, atendimento.d_ini ASC

    and see how many rows have atend_os.protocolo = NULL

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