sql - 下一个值函数错误

Question

在 postgresql 执行过程中出现以下错误:错误 [HY000] 错误:您只能在目标列表中使用“下一个值”函数

这个sql语句有什么问题:

SELECT TRFCON.ID       
       ,   
       case when DDDCON.ID_CON = 0
       then
        NEXT VALUE FOR SEQ_DDD_CON   
        else
       DWHCON.ID_CON
       end ID_CON

  FROM TTT_CONSUMPTION TTTCON 

join DDDDWH_CON DWHCON on TTTCON.ID_ORG = DDDCON.ID_ORG
and TTTCON.ID_PRO = DDDCON.ID_PRO
and TTTCON.ID_REF = DDDCON.ID_REF

该序列的DDL如下:

CREATE SEQUENCE SEQ_DDD_CON AS BIGINT
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE 
    NO MAXVALUE 
    NO CYCLE;

Answer 1

来自 CREATE SEQUENCE 的文档

Compatibility

CREATE SEQUENCE conforms to the SQL standard, with the following exceptions:

• [...]
• Obtaining the next value is done using the nextval() function instead of the standard's NEXT VALUE FOR expression.