Values like '' - Mailing list pgsql-sql

From Elielson Fontanezi
Subject Values like ''
Date
Msg-id A799F7647794D311924A005004ACEA970D209757@cprodamibs249.prodam
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Responses Re: Values like ''
Re: Values like ''
List pgsql-sql
Hi folks!
 
    Why does the following query work on pgsql 7.2.3 and not in pgsql 7.3.4?
 
SELECT cronograma_evento.nr_projeto ,cronograma_evento.dt_inic
  ,cronograma_evento.nr_sala ,cronograma_evento.tm_hora_inicial
  ,cronograma_evento.tm_hora_final ,cronograma_evento.cd_turma
  ,cronograma_evento.cd_discipl ,locais_sala.cd_tipo_sala
FROM
 cronograma_evento, locais_sala
WHERE
  cronograma_evento.dt_crono = '1/12/2003'

  AND cronograma_evento.cd_local = ''
 
  AND cronograma_evento.cd_local = locais_sala.cd_local
  AND cronograma_evento.nr_sala =  locais_sala.nr_sala
ORDER BY
  cronograma_evento.nr_sala,
  cronograma_evento.tm_hora_inicial;
 
 
 
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