Oracle“无法更新为NULL"； [英] Oracle "Cannot update to NULL"

问题描述

我在Oracle 10g上有以下查询:

I have this query on Oracle 10g:

UPDATE "SCHEMA1"."CELLS_GLIST" 
SET ("GLIST_VALUE_ID", "USER_ID", "SESSION_ID") = (
    SELECT "GLIST_VALUE_ID", 1 AS "USER_ID", 123456 AS "SESSION_ID"
    FROM "SCHEMA1"."GLISTS_VALUES_UOR"
    WHERE ("UOR_ID"=3)
    AND ("GLIST_ID"=67)
    AND ("GLIST_VALUE_DESC" = (
        SELECT "GLIST_VALUE_DESC"
        FROM "BMAN_TP1"."GLISTS_VALUES_UOR"
        WHERE ("UOR_ID"=3)
        AND ("GLIST_VALUE_ID"="CELLS_GLIST"."GLIST_VALUE_ID")
    ))
)
WHERE EXISTS (......)

它一直在说 ORA-01407:无法更新("SCHEMA1"."CELLS_GLIST"."SESSION_ID")为NULL

"SESSION_ID"显然是不可为空，但是我实际上是在向该字段传递值，所以我不理解问题所在.

"SESSION_ID" is obviously Not Nullable, but I'm actually passing a value to that field, so I do not understand the problem.

推荐答案

我发现此查询也有效:

UPDATE "BMAN_TP1"."CELLS_GLIST" 
SET "GLIST_VALUE_ID" = (
    SELECT "GLIST_VALUE_ID"
    FROM "BMAN_TP1"."GLISTS_VALUES_UOR"
    WHERE ("UOR_ID"=3)
    AND ("GLIST_ID"=67)
    AND ("GLIST_VALUE_DESC" = (
        SELECT "GLIST_VALUE_DESC"
        FROM "BMAN_TP1"."GLISTS_VALUES_UOR"
        WHERE ("UOR_ID"=3)
        AND ("GLIST_VALUE_ID"="CELLS_GLIST"."GLIST_VALUE_ID")
        ))
    ),
    "SESSION_ID" = 123456,
    "USER_ID" = 1
WHERE EXISTS (......)

但是，它的执行速度确实非常快...我怀疑是否缺少某些东西...

But, it performs really really fast... I doubt I'm missing something...

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