Posts by João Filipe • 21 points

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  Q: ERROR #1111 - Invalid use of group Function (SUM | COUNT)

  This query gives me the total attendance of two parliamentary groups (e.g: PS, PSD) between two dates: SELECT DISTINCT a.partido, (SELECT COUNT(presencas.assiduidade) FROM presencas, reunioes WHERE…

  mysql sql

  asked 7 years, 2 months ago João Filipe 21