Hello, I have an unexpected error in my following query (of course, the query has been simplified here to request help):
SELECT num_poste, to_char(dat, 'YYYYMM')::integer dat, CASE FLOOR((TO_NUMBER(TO_CHAR(dat,'DD'),'99')-1)/10) WHEN 0 THEN 1 WHEN 1 THEN 2 ELSE 3 END::smallint AS num_decade , CASE WHEN ( CASE FLOOR((TO_NUMBER(TO_CHAR(dat,'DD'),'99')-1)/10) WHEN 0 THEN 1 WHEN 1 THEN 2 ELSE 3 END::smallint IN (1 , 2) AND count(glot)=10 ) THEN ( SELECT valeur FROM table3 WHERE num_serie_coef=CASE WHEN num_poste <96000000 THEN 0 WHEN num_poste BETWEEN 97100000 and 98899999 THEN num_poste/100000 END AND coef = 'APRIME_ANGSTROM' AND num_mois=substr( to_char(dat,'yyyymm') , 5, 2)::smallint ) ELSE NULL END AS toto FROM table1 JOIN table2 USING (num_poste) GROUP BY num_poste, to_char(dat, 'YYYYMM') , CASE FLOOR((TO_NUMBER(TO_CHAR(dat,'DD'),'99')-1)/10) WHEN 0 THEN 1 WHEN 1 THEN 2 ELSE 3 END::smallint ORDER BY num_poste, to_char(dat, 'YYYYMM'), CASE FLOOR((TO_NUMBER(TO_CHAR(dat,'DD'),'99')-1)/10) WHEN 0 THEN 1 WHEN 1 THEN 2 ELSE 3 END::smallint ERROR : subquery uses ungrouped column "table1.dat" from outer query LIGNE 10 : AND num_mois=substr( to_char(dat,'yyyymm') , 5, 2)::smallint ^ => In the subquery, the semantic analysis of the query considers the column " dat " instead of the expression " to_char(dat,'yyyymm') ", which is actually a grouped column. Is this normal? How can I simply resolve the problem? Sincerely.
