Null values in table columnsSome columns cannot have a meaningful value in every row. Db2 uses a special value indicator, the null value, to stand for an unknown or missing value. A null value is a special value that Db2 interprets to mean that no data is present. If you do not ...
Does any special value needs to be populated in to that column before inserting it into table? And how a it is identified while retrieving the data from DB2 table? NULL Indicator(NI) concept is introduced to identify these values. For all the columns that allows NUlls, a corresponding Indica...
但是,请不要在主变量与 null 指示符变量之间加入逗号。 还可以通过在主变量及其 null 指示符之间放置可选的 INDICATOR 关键字来指定 null 指示符变量。 系统将检查 null 指示符变量是否为负数值。 如果值不是负数,那么应用程序可以使用所返回的主变量值。 如果值是负数,那么表明提取到的值为 null,因此不应使用该...
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要么在Mybatis的sql文件中,要么在Java程序中。 sql中的写法: select * from p2p_loan_variation where 1= 1 <if test="list != null and list.size>0"> and LOAN_ID in <foreach item="item" index="id" collection="list" open="(" separator="," close=")"> #{item} </foreach>...
DB2 Information Integration Development IBM Germany Frank Swarbrick #9 Nov 24 '06, 06:45 PM Re: Convert Null in Date field to String Tonkuma<tonkuma @jp.ibm.com11/22/06 11:17 PM >>> > >Frank Swarbrick wrote: >> >MOVE SPACES TO NULLABLE-CHAR-FIELD >> >EXEC SQL > INSERT INTO...
DB2 - How do we know that NULL value has been selected for a nullable column ?a.Check if equal to NULLb.Use null indicator, 0 indicates nullc.Use null indicator, -1 indicates nulld.Use null indicator, -2 indicates nulle.None of the above.Use null indicat