Invalid query: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND docn IS NOT NULL
AND docw = 'S'
and docp = 'ÍMG'
ORDER BY
docm,
substr(doc' at line 13 - SELECT DISTINCT
docn,DOCM,docp,
docv,
doci,
docd,
doca,
doco
FROM
AESSICH_SUB_DOC
WHERE
mainreference =
AND docn IS NOT NULL
AND docw = 'S'
and docp = 'ÍMG'
ORDER BY
docm,
substr(docd, 7, 4),
substr(docd, 4, 2),
substr(docd, 1, 2),
doco