Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation '<='
Links (1889)
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You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '-5, 5' at line 1
1st Southern European Conference on Survey Methodology (SESM) and VI Congreso de Metodología de Encuestas
Link: http://eventia.upf.edu/sesm/paginas/pagina_123_5.ct.html
Data has been last edited on Jan 03 2014