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...
COBOL の NULL 標識変数は、PIC S9(4) COMP-5データ・タイプとして宣言する必要があります。 COBOL プリコンパイラーは、グループ・データ項目での使用に便利なNULL 標識変数の表(標識表として知られる) の宣言をサポートします。 以下のように宣言します。 01 <indica...
Assigning a satellite data item as a null indicator Use theINDICATINGphrase in the case where you can or want to designate satellite data items as null indicators. For example, consider the following COBOL source: `Identification division.` Program-id. myprog. Data division. Working-storage sectio...
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
Much nicer than using "indicator variables" if >you don't really care that it's a NULL field. > >The main thing to recognize here is that the result is a string and not a >date value. An empty string '' is not a valid date in the first place. Yes, but within a COBOL ...