DB2 Sql Code

zyllf2009

打开db2 "Command Window"命令行, 输入：
db2 ? sql+num
例如
db2 ? sql407

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db2 ? sql407

SQL0407N Assignment of a NULL value to a NOT NULL column
          "<name>" is not allowed.
Explanation:
One of the following occurred:
o   The update or insert value was NULL, but the object column
    was declared as NOT NULL in the table definition.
    Consequently:
    -   NULL values cannot be inserted into that column.
    -   An update cannot set values in that column to NULL.
    -   A SET transition-variable statement in a trigger cannot set
        values in that column to NULL.
o   The update or insert value was DEFAULT, but the object column
    was declared as NOT NULL without WITH DEFAULT in the table
    definition.  Consequently:
    -   A default value of NULL cannot be inserted into that
        column.
    -   An update cannot set default values of NULL in that column.
    -   A SET transition-variable statement in a trigger cannot set
        default values of NULL in that column.
o   The column name list for the INSERT statement omits a column
    declared NOT NULL and without WITH DEFAULT in the table
    definition.
o   The view for the INSERT statement omits a column declared NOT
    NULL and without WITH DEFAULT in the base table definition.

If the value for "<name>" is of the form "TBSPACEID=n1,
TABLEID=n2, COLNO=n3", then the column name from the SQL
statement was not available when the error was issued. The values
provided identify the tablespace, table, and column number of the
base table that does not allow NULL value.
Federated system users: this situation can be detected by the
federated server or by the data source.  Some data sources do not
provide the appropriate values for "<name>".  In these cases the
message token will have the following format: "<data
source>:UNKNOWN", indicating that the actual value for the
specified data source is unknown.
The statement cannot be processed.
Note: Under some circumstances, the token "<name>" may not be
       filled in (sqlerrmc field of the SQLCA not filled in).
User Response:
Correct the SQL statement after examining the object table
definition to determine which columns of the table have the NOT
NULL attribute and do not have the WITH DEFAULT attribute.
If the value for "<name>" is of the form "TBSPACEID=n1,
TABLEID=n2, COLNO=n3", you can determine the table name and
column name using the following query:

     SELECT C.TABSCHEMA, C.TABNAME,
            C.COLNAME
        FROM SYSCAT.TABLES AS T,
             SYSCAT.COLUMNS AS C
        WHERE T.TBSPACEID = n1
        AND T.TABLEID = n2
        AND C.COLNO = n3
        AND C.TABSCHEMA = T.TABSCHEMA
        AND C.TABNAME = T.TABNAME

The table and column identified by this query may be the base
table of a view for which the SQL statement failed.
Federated system users: if the reason is unknown, isolate the
problem to the data source failing the request (see the problem
determination guide for procedures to follow to identify the
failing data source) and examine the object definition for that
data source. Remember that the defaults (NULL and NOT NULL) are
not necessarily the same between data sources.
sqlcode :  -407
sqlstate :  23502