2631510 - ALTER TABLE statement is not generated to add a mandatory column with default - SAP PD

• IBM DB2 for z/OS uses the ALTER TABLE ... ADD COLUMN statement to add a mandatory column with default to a table.
  
  
• PD generates ALTER TABLE ... ADD COLUMN statement when:
     - the column is defined as NOT NULL and a default value is defined by using the DEFAULT clause (WITH DEFAULT is not used),
     - the column is nullable but WITH DEFAULT is used.
  
  
• CREATE/DROP TABLE statements are generated when:
     - the column is defined as NOT NULL and no DEFAULT/WITH DEFAULT is used,
     - the column is defined as NOT NULL WITH DEFAULT.
  
  
• PD should generate:

ALTER TABLE table-name
ADD COLUMN column-name data-type NOT NULL [default-clause]

when
   - the column is not mandatory,
   - or a default value is defined,
   - or the column is Identity,
   - or the column is defined as WITH DEFAULT,
   - or the column has the GENERATED clause defined.

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

• SAP PowerDesigner (PD) 16.6
• IBM DB2 for z/OS

db2mvs, nulls, 814540, CR814540, CR#814540 , KBA , BC-SYB-PD , PowerDesigner , Bug Filed