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Query: SELECT testID, test_type, test_number, vendor, tng_dna_tests.gedcom, tng_dna_tests.personID, treename FROM tng_dna_tests LEFT JOIN tng_trees on tng_dna_tests.gedcom = tng_trees.gedcom ORDER BY personID, vendor, test_type, test_date LIMIT 50

Illegal mix of collations (utf8_polish_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '='