文档里面的sql:
update t_flow_intervention set t_flow_intervention.FLOWSTATERT_ID=t_document.state from t_flow_intervention,t_document where t_flow_intervention.id=t_document.id AND (t_flow_intervention.FLOWSTATERT_ID IS NULL OR t_flow_intervention.FLOWSTATERT_ID='');
MySQL的UPDATE语句不支持FROM子句来连接多个表,可以改成这个试试是否可行。
UPDATE t_flow_intervention
JOIN t_document ON t_flow_intervention.id = t_document.id
SET t_flow_intervention.FLOWSTATERT_ID = t_document.state
WHERE
t_flow_intervention.FLOWSTATERT_ID IS NULL
OR t_flow_intervention.FLOWSTATERT_ID = '';