语法错误：横向连接删除 (PostgreSQL)

如何解决语法错误：横向连接删除 (PostgreSQL)

PostgreSQL 11.1

AFAIK，这是正确的，应该可以运行。它因删除语法错误而失败。我错过了什么？

感谢您的帮助。

错误：“DELETE”处或附近的语法错误 第 41 行：从 d

删除

WITH _in (tservice,patient_recid,disease_recid,new_disease_recid) AS (
        VALUES ('2021-04-21'::timestamp,'23262'::integer,'34978'::integer,'33364'::integer)    
)
UPDATE dx d
SET disease_recid = n.new_disease_recid
FROM _in n,LATERAL ( WITH RECURSIVE readtoend AS(
                SELECT recid,newrecid
                    FROM patients p1
                    JOIN _in n ON p1.recid = n.patient_recid
                UNION
                SELECT  c.recid,c.newrecid
                    FROM patients c
                    INNER JOIN readtoend s ON s.newrecid = c.recid
            ),readtostart AS(
                SELECT recid,newrecid
                        FROM patients p1
                        JOIN _in n ON p1.recid = n.patient_recid
                    UNION
                    SELECT c.recid,c.newrecid
                        FROM patients c
                        INNER JOIN readtostart s ON s.recid = c.newrecid
            )
                SELECT recid FROM readtoend
                UNION
                SELECT recid FROM readtostart            
            ) j,LATERAL ( WITH _get_existing_target AS(                               
                    SELECT d.*
                    FROM d
                    WHERE (d.patient_recid,d.disease_recid) = (j.recid,n.new_disease_recid) AND d.tservice <= n.tservice
                ),_get_conflicts AS(                                    
                    SELECT d.*
                    FROM d  
                    WHERE (d.patient_recid,n.disease_recid) AND EXISTS (  SELECT 1
                                    FROM _get_existing_target x
                                    WHERE d.patient_recid = x.patient_recid AND d.tservice::date = x.tservice::date)
                )
                DELETE FROM d
                USING _get_conflicts f
                WHERE d.recid = f.recid
                RETURNING d.*
                ) del
WHERE (d.patient_recid,d.disease_recid)  = (j.recid,n.disease_recid) AND d.tservice::date <= n.tservice::date
       AND  d.recid NOT IN ( SELECT recid FROM del);    

解决方法

您不能在查询的 Date 列表中使用 DELETE ... RETURNING。