我有这个问题.
SELECT notes.id,enter.name as 'enter_name',step.title as 'flow status',notes.user_name as user_created,notes.created,notes.rel_client_id,td_doc_nr.value_string as 'document number',enter.enter_code,
IF(!ISNULL(td_doc_nr.value_string),
(SELECT GROUP_CONCAT(product_name SEPARATOR ',') from notes d
join note_bundles b on b.note_id = d.id
join note_products p on p.doc_bundle_id = b.id
join note_product_get_fields f on f.doc_product_id = p.id
join note_product_get_field_data fd on fd.get_field_id = f.id
where d.doc_nr = td_doc_nr.value_string
and value_string ='auto')
,NULL) as test
FROM notes notes
JOIN notes_steps step ON step.id = notes.step_id
JOIN notes_enters enter ON enter.id = notes.enter_id
LEFT JOIN notes_custom_fields tf_doc_nr …