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  1. MariaDB Server
  2. MDEV-27825

PIVOT create not setting default value of the column

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    Description

      When I create a pivot using the following SQL, I do not see that default values are set for the pivot columns. The default value is always 0.

      CREATE OR REPLACE TABLE sales3Q(
      		 
      region VARCHAR(255) null,
      		 
      country VARCHAR(255) null,
      		 
      item_type VARCHAR(255) null,
      		 
      measures VARCHAR(255) null,
      		 
      Y2016_W06 double(32,2) default null flag=1,
      		 
      Y2016_W07 double(32,2) default null flag=1,
      		 
      Y2016_W08 double(32,2) default 0.5 flag=1,
      		 
      Y2016_W09 double(32,2) default null flag=1
      		 
      ) engine=connect table_type=pivot
      		 
      option_list='PivotCol=order_date, Accept=1'
      		 
      SrcDef='select * from <some table>'

      In the above example, W06 values exist in the source table, but not W07.
      In W07 column, I get zero instead of null and in W08 column, I get zero instead of 0.5

      Please check if this is a bug and if there is any workaround.

      thanks
      Mahesh

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            monty Michael Widenius
            maheshkr76private Mahesh K Renduchintala
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